Chapters 8.33: Difference between revisions

From Farmpedia
Jump to navigation Jump to search
(Created page with "<div> <div class="title"><h3>8.33-Sweet Potato Value Addition</h3><br><h3 class="ch-owner">Alex Roberts, University of Guelph, Canada </h3></div> <div class="hero-img-2"> 300px <p>Suggested citation for this chapter.</p> <p>Roberts,A. (2022) Sweet Potato Value Addition,In Farmpedia, The Encyclopedia for Small Scale Farmers. Editor, M.N. Raizada, University of Guelph, Canada. http://www.farmpedia.org</p> <h3 class="title-bg">Introduction</h3>...")
 
No edit summary
 
Line 1: Line 1:
<div>
<div>
  <div class="title"><h3>8.33-Sweet Potato Value Addition</h3><br><h3 class="ch-owner">Alex Roberts, University of Guelph, Canada </h3></div>
  <div class="title"><h3>8.33-Tomato Value Addition</h3><br><h3 class="ch-owner">Mikayla Robinson, University of Guelph, Canada </h3></div>
<div class="hero-img-2">
<div class="hero-img-2">
[[File:4.jpg|300px]]
[[File:4.jpg|300px]]
<p>Suggested citation for this chapter.</p>
<p>Suggested citation for this chapter.</p>
<p>Roberts,A. (2022) Sweet Potato Value Addition,In Farmpedia, The Encyclopedia for Small Scale Farmers. Editor, M.N. Raizada, University of Guelph, Canada. http://www.farmpedia.org</p>
<p>Robinson,M. (2022) Tomato Value Addition,In Farmpedia, The Encyclopedia for Small Scale Farmers. Editor, M.N. Raizada, University of Guelph, Canada. http://www.farmpedia.org</p>
       <h3 class="title-bg">Introduction</h3>
       <h3 class="title-bg">Introduction and Background Information</h3>
         <div class="cont-bg">
         <div class="cont-bg">
           <P>Sweet potato is a widely grown root crop ( Business Diary, 2017); its large, starchy, sweet-tasting, tuberous roots compose a nutritious vegetable. The young leaves and shoots are sometimes eaten as greens (ActionAid, 2015). Over 95% of the global sweet potato crop is produced in developing countries. More than 130 million tons are produced per year, with China producing about 80% of it (ActionAid, 2015). Sweet potato is rich in carbohydrates, phosphorus, and an excellent source of Vitamins A, B and C (Business Diary, 2017). It is known to lower cholesterol with curative effects for constipation and stomach stress. Value addition from sweet potatoes has become an increasing topic in the food world today as it has endless uses and all of the plant can be used as food for humans or feed for livestock (Business Diary, 2017). Sweet potatoes are widely becoming a novel root vegetable for functional foods, as it is nutritious and widely accessible (Sweet Potato Knowledge Portal, 2018). Functional foods are described as foods that contribute to an overall healthy body (Sweet Potato Knowledge Portal, 2018).</p>
           <P>Tomatoes are grown worldwide on nearly 5 million hectares of land (Mubarok et al., 2015). The tomato plant was originally used by the Aztecs of Central America and they called it the xitomat; when the Spanish conquistadors landed around 700 A.D. they named it tomate (Friedman, 2002). The physical appearance of a tomato is extremely important to how well the tomato crop sells. If the tomatoes are not of high quality appearance and taste, the farmer will struggle to sell their product (Mubarok et al., 2015). What can a farmer do with the unsellable tomatoes? This is where creativity and entrepreneurship are needed to add value after harvest. When looking at the value additions to tomatoes presented, this chapter will try and allow for many recipes to be performed without the need for large machines or even electricity. The recipes will allow the farmer creativity with the spices added to the recipes based on their own personal taste and on where they live.</p>  
</div>
<p>Tomatoes and other fruits and vegetables are an incredibly important part of a balanced diet. Tomatoes are important because they are, “an important source of dietary antioxidants due to their content in carotenoids, vitamins and phenolic compounds” (Aguiló-Aguayo et al., 2013). Thus, the following recipes and value additions should continue to offer the same benefits and help create a balanced diet.</p>
  </div>
</div>
<div style="margin-top: 30px;">
      <h3 class="title-bg">Wrapping</h3>
        <div class="cont-bg">
<p>The simplest value addition ideas would be to wrap sweet potatoes in newspaper in order to limit their exposure to light. Light can accelerate the autooxidation of fats and oils. This is imperative to increase shelf life, as well it can be more attractive to buyers; this can be advertised as offering a longer shelf life then other competitors (FoodSafetySite, 2012). Not wrapping each in their own individual package can lead to mold and harmful bacteria that can age sweet potatoes (FoodSafetySite, 2012).  And wrapping each in an individual package would prevent pathogen cross-contamination (Lerner, B. Rosie, 2018). This process can be done extremely fast by hand and would result in a prolonged shelf life. Wrapping may be more expensive and time consuming, however, buying used newspaper or books can be inexpensive. Recycling can also lead to a cleaner environment; this can benefit smallholder farmers who sell what they produce (Knott, S., 2018). However, there is insufficient data on the price difference for wrapped compared to unwrapped sweet potatoes.</p>
</div>
   </div>
   </div>
  <div style="margin-top: 30px;">
  <div style="margin-top: 30px;">
       <h3 class="title-bg">Labeling</h3>
       <h3 class="title-bg">Value Addition Ideas </h3>
         <div class="cont-bg">
         <div class="cont-bg">
<p>Value addition could be achieved simply by noting the nutrient benefits of processed sweet potato on packaging. For example, baking the potatoes instead of frying or boiling allows for more nutrients to be kept (Dincer, Cuneyt, et al., 2011). Baking a potato only requires cutting then placing onto a sheet in an oven. Labeling can improve sale value/rate, while adding a quick recipe (like baked fries) could add further value. Also, including the nutritional value of sweet potatoes can be beneficial (Sustain, 2007). A study from Miller & Cassady (2015) supports the claim that including nutritious information helps increase the sale of products by increasing the rate of sales, since ‘knowledge-is-power’. This would be best sold to tourists or at markets.</p>  
<p><b>1. Tomato Juice</b></p>
<p>In the Technical manual on small-scale processing of fruits and vegetables (Paltrinieri et al., 1997), the authors point out that tomato juice, “may be used to make cocktails and cook with foods when fresh tomatoes are no longer available on the market”. The use of tomato juice can be found within many different recipes or can be just drunk by itself. Tomato juice is culturally relevant across the world, and it is incredibly diverse in its uses for cooking. It can be made by smallholder farmers without electricity or modified to be made using more technologically advanced processes as well.</p>
<p><b>Supplies Needed:</b></p>
<p>• A fire or stove that you can heat the tomatoes up on;</p> 
<p>• A sieve to strain out the juice;</p> 
<p>• Saucepan for boiling the tomatoes in, knife for cutting them up, a stir stick or something to mash the tomatoes with;</p> 
<p>• Canning jars or bottles to put the juice in after it has been made;</p> 
<p>• Water to sanitize the jars/bottles with;</p> 
<p>• Lemon juice or citric acid or acidity vinegar, sugar (optional);</p>
<p><b>Procedure:</b> Around 53 pounds (a bushel) of tomatoes is needed in order to make 15 to 18 quarts of juice. The first step is to wash, remove stems and trim off the discoloured or bruised parts of the tomatoes. In order to stop juices from getting out of the tomato, cut the tomato into quarters and then throw it directly into the saucepan. Turn the heat on, and crush the tomatoes while they boil. Continue to add tomatoes until all the tomatoes have been used. Once all the tomatoes have been added, simmer for 5 minutes. Next, press the juice through a sieve to remove the tomato skin and seeds. Add lemon juice/citric acid/acidity vinegar to acidify the juice. Then take the steps necessary to seal the jars and package.</p>
<p>(source for the entire recipe and procedure: “Selecting, Preparing, and Canning Tomatoes and Tomato Products.”; see Helpful Links below)</p>
<p><b> Labour Needs:</b> The labour needs for this product are relatively low. Ultimately, the only labour that would be needed would be that of the farmer who is producing the juice. Simply one person would be needed in order to produce this recipe.</p>
<p><b>Overhead Costs:</b> The costs of this would ultimately be any of the required supplies. These include items like: jars or bottles and the ingredients for the acidification process.</p>
<p><b>Target Market:</b> Tomato juice could easily be sold at a roadside stand, outside a household, in a town market, or at a tourist hotel. If close by, there is also the opportunity to sell the tomato juice (because of the long shelf life) to a grocery store or a general store.</p>
<p><b>Other Opportunities to Add Value to Tomato Juice:</b>  Some other opportunities to add value to the tomato juice would be to add labels to the jars/bottles; this would make it appear more professional. Also, there are many local recipes that require tomato juice. If interested, the farmer could produce some of these recipes, dependent on their local needs and sell these for even more money.</p>
<p><b>2. Hot Sauce </b></p>
<p>The great feature about this recipe is that one can change it to meet the desired level of spiciness. An entrepreneur can come up with different spices and different labels which gives their customers a choice as to which hot sauce they would buy. This approach would create an exciting way to also include local spices and traditional tastes within the hot sauce.</p>
<p><b>Supplies Needed:</b></p>
<p>• A fire or stove that you can heat the sauce up on; </p>
<p>• A sieve or food mill; </p>
<p>• Pot, knife, a stir stick; </p>
<p>• Canning jars or bottles to put the sauce in after it has been made;</p>
<p>• Water to sanitize the jars/bottles; </p>
<p>• Spice bag;</p>
<p>• Tomatoes, hot peppers, distilled white vinegar, salt, pickling spices.</p>
<p><b>Procedure:</b>  Make sure to wear plastic gloves and/or do not touch one’s face while handling or cutting the hot peppers. Thoroughly wash one’s hands before one touches their face. Mix all the ingredients in the pot and bring to a boil. Simmer until the tomatoes are soft, or for about 20 minutes. Then, press the mixture through a food mill. Put back in the pot and simmer for another 15 minutes. Pour into the jars/bottles and then seal them properly.</p>
<p>(source for all of the above information: “Selecting, Preparing, and Canning Tomatoes and Tomato Products”; see Helpful Links below)</p>
<p><b> Labour Needs:</b> The only labour needed to make hot sauce is the need of one person to produce it. This does not require a lot of people in order to turn out a good yield. </p>
<p><b>Overhead Costs:</b> The overhead costs that are needed to make hot sauce are the ingredients and the jars/bottles. The farmer already has a stove, pan and all the other ingredients.</p>
<p><b>Target Market:</b> Hot sauce would be fantastic to sell on a roadside stand, outside a household, in a town market, or at a tourist hotel. If close by, there is also the opportunity to sell the hot sauce (because of the long shelf life) to either a grocery store or a general store. It would also be very appealing if there were multiple “levels” of hot sauce; this could cause people to try a couple or just give more opportunity for people to choose their level of spiciness.</p>
<p>Other Opportunities to Add Value to Hot Sauce: As mentioned above, the idea of creating a bunch of different hot sauces would help the hot sauce to gain popularity. Also, adding different labels to the hot sauces would give the hot sauce more value and a sense of legitimacy.</p>
<p><b>3. Salsa </b></p>
<p>This product might have a higher demand in places such as Latin America or in areas that cater to tourists. Salsa is also incredibly diverse in that the farmer can decide the level of spice as well as what vegetables he/she would like to put in with the tomatoes.</p>
<p><b>Supplies Needed:</b></p> 
<p>• A fire or stove that one can heat the tomatoes up on; </p>
<p>• A sieve to strain out the juice;</p>
<p>• Large pot, knife, a stir stick; </p>
<p>• Canning jars to put the salsa in after it has been made; </p>
<p>• Water to sanitize the jars/bottles with;</p>
<p>• Onions, peppers, hot peppers (depending on how spicy you want the salsa), garlic, sugar, salt, cumin (or desired spices), cider vinegar.</p>
<p><b>Procedure:</b> Peel the tomatoes and add them into the pot with the tomatoes, onions, peppers, hot peppers, garlic, sugar, salt, cumin, and vinegar. Bring to a boil, then reduce the heat to keep the pot simmering. Boil gently for an hour. The sauce should be reduced by half and thickened a bit. Sterilize the jars. Put the sealed cans in a water bath, as per the source, fully sealing the cans through this method. When they are fully sealed one should hear the tops pop. Canned salsa lasts a year before going bad.</p> 
<p> (Source for all the above information: “How to Make Simple Easy Homemade Canned Tomatoes.”; see Helpful Links below) </p>
<p><b> Labour Needs:</b> Salsa requires no additional labourers other than the farmer. Making salsa can be done over a single stove top with the need for one person manning it and chopping the vegetables.</p>
<p><b>Overhead Costs:</b>  The overhead costs in this value adding method are the costs of jars and of other produce. If the farmer does not already produce the other vegetables him/herself, such as pep-pers, onions and hot peppers, then he will be required to purchase them. He will also be required to purchase the necessary spices.</p>
<p><b> Target Market:</b> Salsa would be easy to sell on a roadside stand, outside a household, in a town market, or at a tourist hotel. If close by, there is also the opportunity to sell the salsa (because of the long shelf life) to either a grocery store or a general store.</p>
<p>Other Opportunities to Add Value to Salsa: An opportunity to add more value to the salsa would be to add a label to the product to make it look more official. Marketing as, “locally sourced” and “made by a local farmer” at hotels, super markets, and general stores could also add more value.
Transportation and Safety Issues: Some of the issues in regards to transportation and safety are that transporting the glass jars could be difficult. It would be smart to package them in boxes with leaves or fabric in between them in order to keep the jars from smashing into one another. Some safety concerns are the heat of the fire and the hot liquid and jars. This concern could be avoided by using gloves or an apron of some sort of protection against the heat.</p>
<p><b>4. Sun-dried Tomatoes</b></p> 
<p>Here are some resources on how to dry tomatoes (using only the sun and a net to keep insects away) and what can be done to sun-dried tomatoes to add even more value:</p>
<p>• https://whiteonricecouple.com/recipes/sun-dried-tomatoes/ - This link explains how to dry tomatoes in the sun and how to know when they are fully finished drying.</p>
<p>• https://avocadopesto.com/vegan-tomato-soup-recipe - This recipe uses sun-dried tomatoes in soup. In this recipe locals can feel free to change up the spices and add local spices instead of those listed in order to make it more relevant to the market you are in.</p> 
<p>• https://www.finedininglovers.com/blog/food-drinks/sun-dried-tomatoes-uses/ - this link gives a list of ways to “get the most of sun-dried tomatoes” including storing them in oil.</p>
</div>
</div>
   </div>
   </div>
  <div style="margin-top: 30px;">
  <div style="margin-top: 30px;">
       <h3 class="title-bg">Flour</h3>
       <h3 class="title-bg">Conclusions</h3>
         <div class="cont-bg">
         <div class="cont-bg">
<p>Sweet potato root can be used to produce a variety of flours, which would be subsequently used to make breads, pastries and noodles (CIP, 2018). The process of producing flour from sweet potato root is described in full below. The following diagram shows an overview of the process:</p> 
<p>When examining adding value to tomatoes, it is important assess the local market and make sure that a processed product will be needed and enjoyed locally. It is important to use la-belling and taste that is localized to the culture surrounding the local region. The value additions suggested above are critical to not wasting the crops that farmers work so hard to produce, while adding additional profits and employment for smallholders.</p>
[[File:Capture 792.JPG]]
</div>
<p>The process requires a knife for cutting as well as a mill; mills can be priced as low as $60. A visual step by step process of making flour can be found at https://www.youtube.com/watch?v=GLEbnNnXqMA. This video is particularly useful because it describes the process in Kenya.  Sweet potato flour can be used to fortify other flours or to make bread itself. Fortifying other flours with sweet potato flour yielded the best results compared to other white breads made from wheat flour alone (Shan, Shan, et al., 2012). Hence the packaging could advertise that sweet potato fortified bread is healthier and contains more nutrients than traditional flours. Sweet potato flour is sold in Canada at Walmart (https://www.walmart.com/c/kp/potato-flour) for $17.86/Kg, thus a smallholder farmer can mill the roots and sell for a profit.</p>  
</div>
   </div>
   </div>
  <div style="margin-top: 30px;">
  <div style="margin-top: 30px;">
       <h3 class="title-bg">Jam</h3>
       <h3 class="title-bg">Other Useful Links</h3>
         <div class="cont-bg">
         <div class="cont-bg">
<p>Sweet potato today can be used to make jams with only a blender (Business Diary, 2017), which the online retailer “Alibaba.com” sells for as little as $11. Blended sweet potato can also lead to value added products such as smoothies, drinks and catsup (Business Diary, 2017). This would help improve sales at road sides and markets.</p>
<p>• https://www.youtube.com/watch?v=ijgiV34MgZU - This is a video that is useful to watch if you are making salsa. It moves through all of the different steps necessary to make salsa.</p>  
</div>
• https://www.youtube.com/watch?v=ewQqC0vursc - Jamie Oliver does a great job explaining the reasons behind some of steps in the hot sauce recipe.  <p>However, he does use a good deal of technology. In place of the food processor you can just use a knife and cut up the vegetables for example.
  </div>
• https://www.youtube.com/watch?v=3D86FIyC8BM - This is a great recipe and video that physically shows how to make tomato juice
<div style="margin-top: 30px;">
• https://www.youtube.com/watch?v=JyhD9Zv6Kfk - This is a useful link that explains how to add value to tomatoes as well as other information about</p> <p><b>tomatoes.</b></p>  
      <h3 class="title-bg">Sweet potato skins</h3>
• https://www.alibaba.com - This is a helpful link to a store where you can find many different machines and other products in order to increase <p><b>production.</b></p>
        <div class="cont-bg">
• For example: the wood burning stovetop can be found on this website: https://www.alibaba.com/product-detail/China-Supplier-Wood-Burning-Cast-<p>Iron_60782375095.html?spm=a2700.galleryofferlist.normalList.1.5ac03d7e8LAM2S&s=p
<p>Farmers and consumers can use the whole tuber to maximize profits. As already noted, the root can be used to create flour for human consumption or can be sold as livestock feed ( CIP, 2018). The outer layer of the tuber, instead of being thrown away, contains many useful nutrients and protein which could be added to smoothies, jams, or drinks (Allrecipes, 2018). As stated before a blender can cost as low as $11 on Alibaba.com. Additionally, sweet potato skins can also be baked (Allrecipes, 2018).</p>
• Canning Jars: https://www.alibaba.com/product-detail/High-quality-Canning-Jar-16oz-Glass_60649790164.html
</div>
spm=a2700.galleryofferlist.normalList.60.37df7637tgga0o
  </div>
• http://www.label-it.co.za - Label-it is a great resource that allows a business to order labels for different products.</p>  
<div style="margin-top: 30px;">
      <h3 class="title-bg">Baked sweet potatoes</h3>
        <div class="cont-bg">
<p>There is another popular value addition from sweet potatoes which serves as a healthy alternative to white fleshed potatoes. Sweet potatoes (baked, fried, boiled) are considered as a novel source for natural health promoting compounds (beta-carotene and anthocyanins) for the functional food market (Bovell et al., 2017). Boiling sweet potatoes result in a loss in carotenoids and other important vitamins and minerals (Gehse, Saskia, et al.), hence baking is an alternative. Baking is done in an oven, which can cost as little as $60 on Alibaba, or using rocks or clay. For the latter, a tutorial can be found at https://www.youtube.com/watch?v=z_OUaJVHnF0. Baking opens up new markets, such as to tourists or at local markets.</p>


<p>In conclusion, there is an abundance of value addition ideas for sweet potato smallholder farmers, and there are still more to be discovered with research. Most of these products are realistic for smallholder farmers to implement.</p>
</div>
</div>
   </div>
   </div>
Line 53: Line 93:
       <h3 class="title-bg">References </h3>
       <h3 class="title-bg">References </h3>
         <div class="cont-bg">
         <div class="cont-bg">
  <p>1. ActionAid. (2015). What is a small holder farmer? Retrieved from http://actionaid.org/australia/2015/06/smallholderfarmers101</p>
  <p>1. “A Complete Guide To Home Canning.” National Institute of Food and Agriculture, 2015. https://nchfp.uga.edu/publications/usda/GUIDE03_HomeCan_rev0715.pdf </p>
 
<p>2. “Selecting, Preparing, and Canning Tomatoes and Tomato Products.” National Institute of Food and Agriculture, 2015. https://nchfp.uga.edu/publications/usda/GUIDE03_HomeCan_rev
<p>2. Bovell, B. Adelia C. (2007) Sweet Potato: A Review of Its Past, Present, and Future Role in Human Nutrition. Advances in Food and Nutrition Research, 7, 1–59, doi:10.1016/s1043-4526(06)52001-7.</p>
a. 0715.pdf</p>  
 
<p>3. Aguiló-Aguayo, I., et al. Pulsed Light Effects on Surface Decontamination, Physical Qualities and Nutritional Composition of Tomato Fruit. Postharvest Biology and Technology, 86, 29–36. 2013. doi:10.1016/j.postharvbio.2013.06.011.</p>  
<p>3. Describe the different ways that food spoils. (2012). Retrieved from http://www.foodsafetysite.com/educators/competencies/general/microbiology/mic6.html</p>
<p>4. Friedman, M. Tomato Glycoalkaloids: Role in the Plant and in the Diet. Journal of Agricultural and Food Chemistry, 50 (21), 5751–5780. (2002) doi:10.1021/ jf020560c </p>
 
<p>5. “Home Canning: Jars and Lids.” National Center for Home Food Preservation | NCHFP Publications, Purdue, 2015, nchfp.uga.edu/how/can_01/sterile_jars.html.</p>  
<p>4. Dincer, Cuneyt, et al. (2011) Effects of Baking and Boiling on the Nutritional and Antioxidant Properties of Sweet Potato [Ipomoea Batatas (L.) Lam.] Cultivars. Plant Foods for Human Nutrition, 66 (4), 341-347. doi:10.1007/s11130-011-0262-0.</p>
<p>6. Kimura, S., and N. Sinha. How to Grow Tomatoes. Cold Spring Harbor Protocols, 2008, 12, protocol 5081, doi:10.1101/pdb.prot5081</p>  
 
<p>7. Mubarok, S., et al. Potential Use of a Weak Ethylene Receptor Mutant, Sletr1-2, as Breeding Material To Extend Fruit Shelf Life of Tomato. Journal of Agricultural and Food Chemistry, 63(36), 7995–8007. 2015, doi:10.1021/acs.jafc.5b02742.</p>  
<p>5. Gehse, Saskia, et al. (2018) Determination of the Effect of Boiling on the Bioavailability of Carotenoids in Vegetables Using Resonance Raman Spectroscopy. Laser Physics, 28(10), 105602. doi:10.1088/1555-6611/aad1b4.</p>
<p>8. Noland, T., et al. “How to Make Simple Easy Homemade Canned Tomatoes.” Noshing With the Nolands, 30 Aug. 2018, noshingwiththenolands.com/simple-easy-homemade-canned- tomatoes/. </p>
 
<p>9. Paltrinieri, G., et al. “Technical manual on small-scale processing of fruits and vegetables. 1st ed.” Food and Agriculture Organization of the United Nations. Santiago, Chile. 1997.  
<p>6. Knott, S. (2018, March 22). One of Africa's most promising cities has a trash problem. Retrieved from https://qz.com/africa/1229079/ghana-the-worlds-fastest-growing-economy-has-a-trash-problem/</p>
a. http://www.fao.org/docrep/x0209e/x0209e00.HTM</p>
 
<p>7. Sweet Potato Knowledge Portal, www.sweetpotatoknowledge.org/files/presentation-12-low-cost-technologies-value-addition-orange-fleshed-sweetpotato-smallholder-farmers-western-kenya/.</p>
 
<p>8. Lerner, B. Rosie. “Time to Harvest Sweet Potatoes.” Purdue Extension - Purdue University, 21 Sept. 2018, http://extension.purdue.edu/article/30787.</p>
 
<p>9. Miller, L. M., & Cassady, D. L. (2015). The effects of nutrition knowledge on food label use. A review of the literature. Appetite, 92, 207-216. doi:10.1016/j.appet.2015.05.029</p>
 
<p>10. Obi, L. “15 Ways You Can Add Value to Potatoes for More Money.” Daily Nation, 30 Sept. 2016, www.nation.co.ke/business/seedsofgold/ways-you-can-add-value-to-potatoes-for-more-money/2301238-3400418-e4g4ul/index.html. (cite as Obi, 2016)</p>
 
<p>11. Old Farmer's Almanac. (2018). Growing Sweet Potatoes. Retrieved November 29, 2018, from https://www.almanac.com/plant/sweet-potatoes</p>
 
<p>12. Shan, S., et al. (2012) Physicochemical Properties And Salted Noodle-Making Quality Of Purple Sweet Potato Flour And Wheat Flour Blends. Journal of Food Processing and Preservation, 37 (5) 709-716, doi:10.1111/j.1745-4549.2012.00686.x.</p>
 
<p>13. Sustain (2007). How can improved food labelling contribute to a healthy and sustainable food system? Retrieved from https://www.sustainweb.org/publications/how_can_improved_food_labelling_contribute/</p>
 
<p>14. “Sweet Potato Recipes.” Allrecipes, www.allrecipes.com/recipes/1094/fruits-and-vegetables/vegetables/sweet-potato/.</p>  
 
<p>15. “Sweet Potato Processing and Uses.” International Potato Center (CIP), cipotato.org/crops/sweetpotato/sweet-potato-processing-and-uses/.</p>
 
<p>16. “Value-Added Products from Sweet Potato.” Business Diary PH, Business Diary Ph, 8 Dec. 2017, businessdiary.com.ph/6427/value-added-products-sweet-potato/.</p>
 
<p>17. Victoria Grain Mill - Corona Style. (n.d.). Retrieved from https://torontobrewing.ca/products/victoria-grain-mill-corona-style?variant=32012717379&utm_campaign=gs-2018-10-07&utm_source=google&utm_medium=smart_campaign&gclid=Cj0KCQiA8_PfBRC3ARIsAOzJ2uofbhQoD5PPMrJmemx2diMDGAHWGcxHijD9bGs-mKJ4GkNSNI9sHm8aAkNGEALw_wcB</p>

Latest revision as of 01:18, 7 July 2022

4.jpg

Suggested citation for this chapter.

Robinson,M. (2022) Tomato Value Addition,In Farmpedia, The Encyclopedia for Small Scale Farmers. Editor, M.N. Raizada, University of Guelph, Canada. http://www.farmpedia.org

Introduction and Background Information

Tomatoes are grown worldwide on nearly 5 million hectares of land (Mubarok et al., 2015). The tomato plant was originally used by the Aztecs of Central America and they called it the xitomat; when the Spanish conquistadors landed around 700 A.D. they named it tomate (Friedman, 2002). The physical appearance of a tomato is extremely important to how well the tomato crop sells. If the tomatoes are not of high quality appearance and taste, the farmer will struggle to sell their product (Mubarok et al., 2015). What can a farmer do with the unsellable tomatoes? This is where creativity and entrepreneurship are needed to add value after harvest. When looking at the value additions to tomatoes presented, this chapter will try and allow for many recipes to be performed without the need for large machines or even electricity. The recipes will allow the farmer creativity with the spices added to the recipes based on their own personal taste and on where they live.

Tomatoes and other fruits and vegetables are an incredibly important part of a balanced diet. Tomatoes are important because they are, “an important source of dietary antioxidants due to their content in carotenoids, vitamins and phenolic compounds” (Aguiló-Aguayo et al., 2013). Thus, the following recipes and value additions should continue to offer the same benefits and help create a balanced diet.

Value Addition Ideas

1. Tomato Juice

In the Technical manual on small-scale processing of fruits and vegetables (Paltrinieri et al., 1997), the authors point out that tomato juice, “may be used to make cocktails and cook with foods when fresh tomatoes are no longer available on the market”. The use of tomato juice can be found within many different recipes or can be just drunk by itself. Tomato juice is culturally relevant across the world, and it is incredibly diverse in its uses for cooking. It can be made by smallholder farmers without electricity or modified to be made using more technologically advanced processes as well.

Supplies Needed:

• A fire or stove that you can heat the tomatoes up on;

• A sieve to strain out the juice;

• Saucepan for boiling the tomatoes in, knife for cutting them up, a stir stick or something to mash the tomatoes with;

• Canning jars or bottles to put the juice in after it has been made;

• Water to sanitize the jars/bottles with;

• Lemon juice or citric acid or acidity vinegar, sugar (optional);

Procedure: Around 53 pounds (a bushel) of tomatoes is needed in order to make 15 to 18 quarts of juice. The first step is to wash, remove stems and trim off the discoloured or bruised parts of the tomatoes. In order to stop juices from getting out of the tomato, cut the tomato into quarters and then throw it directly into the saucepan. Turn the heat on, and crush the tomatoes while they boil. Continue to add tomatoes until all the tomatoes have been used. Once all the tomatoes have been added, simmer for 5 minutes. Next, press the juice through a sieve to remove the tomato skin and seeds. Add lemon juice/citric acid/acidity vinegar to acidify the juice. Then take the steps necessary to seal the jars and package.

(source for the entire recipe and procedure: “Selecting, Preparing, and Canning Tomatoes and Tomato Products.”; see Helpful Links below)

Labour Needs: The labour needs for this product are relatively low. Ultimately, the only labour that would be needed would be that of the farmer who is producing the juice. Simply one person would be needed in order to produce this recipe.

Overhead Costs: The costs of this would ultimately be any of the required supplies. These include items like: jars or bottles and the ingredients for the acidification process.

Target Market: Tomato juice could easily be sold at a roadside stand, outside a household, in a town market, or at a tourist hotel. If close by, there is also the opportunity to sell the tomato juice (because of the long shelf life) to a grocery store or a general store.

Other Opportunities to Add Value to Tomato Juice: Some other opportunities to add value to the tomato juice would be to add labels to the jars/bottles; this would make it appear more professional. Also, there are many local recipes that require tomato juice. If interested, the farmer could produce some of these recipes, dependent on their local needs and sell these for even more money.

2. Hot Sauce

The great feature about this recipe is that one can change it to meet the desired level of spiciness. An entrepreneur can come up with different spices and different labels which gives their customers a choice as to which hot sauce they would buy. This approach would create an exciting way to also include local spices and traditional tastes within the hot sauce.

Supplies Needed:

• A fire or stove that you can heat the sauce up on;

• A sieve or food mill;

• Pot, knife, a stir stick;

• Canning jars or bottles to put the sauce in after it has been made;

• Water to sanitize the jars/bottles;

• Spice bag;

• Tomatoes, hot peppers, distilled white vinegar, salt, pickling spices.

Procedure: Make sure to wear plastic gloves and/or do not touch one’s face while handling or cutting the hot peppers. Thoroughly wash one’s hands before one touches their face. Mix all the ingredients in the pot and bring to a boil. Simmer until the tomatoes are soft, or for about 20 minutes. Then, press the mixture through a food mill. Put back in the pot and simmer for another 15 minutes. Pour into the jars/bottles and then seal them properly.

(source for all of the above information: “Selecting, Preparing, and Canning Tomatoes and Tomato Products”; see Helpful Links below)

Labour Needs: The only labour needed to make hot sauce is the need of one person to produce it. This does not require a lot of people in order to turn out a good yield.

Overhead Costs: The overhead costs that are needed to make hot sauce are the ingredients and the jars/bottles. The farmer already has a stove, pan and all the other ingredients.

Target Market: Hot sauce would be fantastic to sell on a roadside stand, outside a household, in a town market, or at a tourist hotel. If close by, there is also the opportunity to sell the hot sauce (because of the long shelf life) to either a grocery store or a general store. It would also be very appealing if there were multiple “levels” of hot sauce; this could cause people to try a couple or just give more opportunity for people to choose their level of spiciness.

Other Opportunities to Add Value to Hot Sauce: As mentioned above, the idea of creating a bunch of different hot sauces would help the hot sauce to gain popularity. Also, adding different labels to the hot sauces would give the hot sauce more value and a sense of legitimacy.

3. Salsa

This product might have a higher demand in places such as Latin America or in areas that cater to tourists. Salsa is also incredibly diverse in that the farmer can decide the level of spice as well as what vegetables he/she would like to put in with the tomatoes.

Supplies Needed:

• A fire or stove that one can heat the tomatoes up on;

• A sieve to strain out the juice;

• Large pot, knife, a stir stick;

• Canning jars to put the salsa in after it has been made;

• Water to sanitize the jars/bottles with;

• Onions, peppers, hot peppers (depending on how spicy you want the salsa), garlic, sugar, salt, cumin (or desired spices), cider vinegar.

Procedure: Peel the tomatoes and add them into the pot with the tomatoes, onions, peppers, hot peppers, garlic, sugar, salt, cumin, and vinegar. Bring to a boil, then reduce the heat to keep the pot simmering. Boil gently for an hour. The sauce should be reduced by half and thickened a bit. Sterilize the jars. Put the sealed cans in a water bath, as per the source, fully sealing the cans through this method. When they are fully sealed one should hear the tops pop. Canned salsa lasts a year before going bad.

(Source for all the above information: “How to Make Simple Easy Homemade Canned Tomatoes.”; see Helpful Links below)

Labour Needs: Salsa requires no additional labourers other than the farmer. Making salsa can be done over a single stove top with the need for one person manning it and chopping the vegetables.

Overhead Costs: The overhead costs in this value adding method are the costs of jars and of other produce. If the farmer does not already produce the other vegetables him/herself, such as pep-pers, onions and hot peppers, then he will be required to purchase them. He will also be required to purchase the necessary spices.

Target Market: Salsa would be easy to sell on a roadside stand, outside a household, in a town market, or at a tourist hotel. If close by, there is also the opportunity to sell the salsa (because of the long shelf life) to either a grocery store or a general store.

Other Opportunities to Add Value to Salsa: An opportunity to add more value to the salsa would be to add a label to the product to make it look more official. Marketing as, “locally sourced” and “made by a local farmer” at hotels, super markets, and general stores could also add more value. Transportation and Safety Issues: Some of the issues in regards to transportation and safety are that transporting the glass jars could be difficult. It would be smart to package them in boxes with leaves or fabric in between them in order to keep the jars from smashing into one another. Some safety concerns are the heat of the fire and the hot liquid and jars. This concern could be avoided by using gloves or an apron of some sort of protection against the heat.

4. Sun-dried Tomatoes

Here are some resources on how to dry tomatoes (using only the sun and a net to keep insects away) and what can be done to sun-dried tomatoes to add even more value:

https://whiteonricecouple.com/recipes/sun-dried-tomatoes/ - This link explains how to dry tomatoes in the sun and how to know when they are fully finished drying.

https://avocadopesto.com/vegan-tomato-soup-recipe - This recipe uses sun-dried tomatoes in soup. In this recipe locals can feel free to change up the spices and add local spices instead of those listed in order to make it more relevant to the market you are in.

https://www.finedininglovers.com/blog/food-drinks/sun-dried-tomatoes-uses/ - this link gives a list of ways to “get the most of sun-dried tomatoes” including storing them in oil.

Conclusions

When examining adding value to tomatoes, it is important assess the local market and make sure that a processed product will be needed and enjoyed locally. It is important to use la-belling and taste that is localized to the culture surrounding the local region. The value additions suggested above are critical to not wasting the crops that farmers work so hard to produce, while adding additional profits and employment for smallholders.

Other Useful Links

https://www.youtube.com/watch?v=ijgiV34MgZU - This is a video that is useful to watch if you are making salsa. It moves through all of the different steps necessary to make salsa.

https://www.youtube.com/watch?v=ewQqC0vursc - Jamie Oliver does a great job explaining the reasons behind some of steps in the hot sauce recipe.

However, he does use a good deal of technology. In place of the food processor you can just use a knife and cut up the vegetables for example. • https://www.youtube.com/watch?v=3D86FIyC8BM - This is a great recipe and video that physically shows how to make tomato juice • https://www.youtube.com/watch?v=JyhD9Zv6Kfk - This is a useful link that explains how to add value to tomatoes as well as other information about

tomatoes.

https://www.alibaba.com - This is a helpful link to a store where you can find many different machines and other products in order to increase

production.

• For example: the wood burning stovetop can be found on this website: https://www.alibaba.com/product-detail/China-Supplier-Wood-Burning-Cast-

Iron_60782375095.html?spm=a2700.galleryofferlist.normalList.1.5ac03d7e8LAM2S&s=p • Canning Jars: https://www.alibaba.com/product-detail/High-quality-Canning-Jar-16oz-Glass_60649790164.html spm=a2700.galleryofferlist.normalList.60.37df7637tgga0o • http://www.label-it.co.za - Label-it is a great resource that allows a business to order labels for different products.

References

1. “A Complete Guide To Home Canning.” National Institute of Food and Agriculture, 2015. https://nchfp.uga.edu/publications/usda/GUIDE03_HomeCan_rev0715.pdf

2. “Selecting, Preparing, and Canning Tomatoes and Tomato Products.” National Institute of Food and Agriculture, 2015. https://nchfp.uga.edu/publications/usda/GUIDE03_HomeCan_rev a. 0715.pdf

3. Aguiló-Aguayo, I., et al. Pulsed Light Effects on Surface Decontamination, Physical Qualities and Nutritional Composition of Tomato Fruit. Postharvest Biology and Technology, 86, 29–36. 2013. doi:10.1016/j.postharvbio.2013.06.011.

4. Friedman, M. Tomato Glycoalkaloids: Role in the Plant and in the Diet. Journal of Agricultural and Food Chemistry, 50 (21), 5751–5780. (2002) doi:10.1021/ jf020560c

5. “Home Canning: Jars and Lids.” National Center for Home Food Preservation | NCHFP Publications, Purdue, 2015, nchfp.uga.edu/how/can_01/sterile_jars.html.

6. Kimura, S., and N. Sinha. How to Grow Tomatoes. Cold Spring Harbor Protocols, 2008, 12, protocol 5081, doi:10.1101/pdb.prot5081

7. Mubarok, S., et al. Potential Use of a Weak Ethylene Receptor Mutant, Sletr1-2, as Breeding Material To Extend Fruit Shelf Life of Tomato. Journal of Agricultural and Food Chemistry, 63(36), 7995–8007. 2015, doi:10.1021/acs.jafc.5b02742.

8. Noland, T., et al. “How to Make Simple Easy Homemade Canned Tomatoes.” Noshing With the Nolands, 30 Aug. 2018, noshingwiththenolands.com/simple-easy-homemade-canned- tomatoes/.

9. Paltrinieri, G., et al. “Technical manual on small-scale processing of fruits and vegetables. 1st ed.” Food and Agriculture Organization of the United Nations. Santiago, Chile. 1997. a. http://www.fao.org/docrep/x0209e/x0209e00.HTM