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(Created page with "<div> <div class="title"><h3>8.23-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>...")
 
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<div class="title"><h3>8.23-Sweet Potato Value Addition</h3><br><h3 class="ch-owner">Alex Roberts, University of Guelph, Canada </h3></div>
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<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>
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          <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>
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      <h3 class="title-bg">Wrapping</h3>
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<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>
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      <h3 class="title-bg">Labeling</h3>
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<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>
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      <h3 class="title-bg">Flour</h3>
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<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> 
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<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>
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      <h3 class="title-bg">Jam</h3>
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<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>
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      <h3 class="title-bg">Sweet potato skins</h3>
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<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>
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      <h3 class="title-bg">Baked sweet potatoes</h3>
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<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>
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      <h3 class="title-bg">References </h3>
        <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>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>
 
<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. 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>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>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>
 
<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 11:12, 5 September 2024

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Suggested citation for this chapter.

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

Introduction

Many countries across the globe cultivate chickpea (Cicer arietinum L.) and it is especially important in South Asian, Middle Eastern, and North African countries (Soltani and Sinclair, 2011). The chickpea is an essential part of the daily diet for many people in these regions as a major source of protein and carbohydrates (Soltani and Sinclair, 2012; Saxena and Singh, 1987). Desi and Kabuli are the two main varieties of chickpea that are cultivated (Saxena and Singh, 1987). Desi types are shorter, more angular, and smaller than kabuli and are often milled to be used as chickpea flour (Corp et al., 2004). Kabuli is rounder and larger than desi types and is cream-coloured and is often used for salads and curries (Corp et al., 2004). Kabuli chickpeas are often canned and sold on the market (Corp et al., 2004).

Chickpea is a valuable crop because as a legume, it fixes nitrogen (approximately 40kg N/ha) and it can be used in intercrop systems as well as in crop rotations (Pande et al., 2011). Farmers will need to use less nitrogen fertilizers if they plant chickpea because of its ability to fix nitrogen (Pande et al., 2011; Corp et al., 2004). Chickpea has a deep rooting system of up to four feet (Corp et al., 2004) and can therefore be effectively intercropped with crops that have shallower rooting systems like coriander and linseed (Pande et al., 2011). Chickpea is most often intercropped with barley, mustard, and wheat (Pande et al., 2011; Azar et al., 2013). Farmers should avoid planting chickpea in low-lying areas as the crop cannot tolerate wet soils, and irrigation and rain can delay maturation of the plant (Corp et al., 2004).

In developing regions of South Asia, the Middle East, and North Africa, farmers are often barely growing enough food to sustain their family, let alone make any kind of profit. Often when a farmer has leftover crop at the end of the growing season, a middle man is involved in making a higher-valued product out of it. However, the farmer is often given a small sum for their hard-earned crop, while the middle man makes much more money by bringing the crop to a processing site to add value. As chickpea is a major crop in these regions, this paper will suggest ways that the farmer themselves can add value to their chickpeas via processing. This paper will also discuss the equipment that farmers can use to process their crop as well as costs and packaging suggestions.

Value Addition

South Asia

South Asian countries where chickpea cultivation and consumption are common include Sri Lanka, India, and Bangladesh. A value addition idea for farmers growing chickpeas in these counties is a food stand at a market selling chickpea flour roti (besan ki roti) and chickpea curries. Besan ki roti is made with chickpea flour, whole wheat flour, chopped fresh cilantro, green chili, carom seed, salt, and water (Table 1). The link provided also has a gluten free version which replaces the whole wheat flour with any gluten free variety such as oat or rice flour. If the farmer has a home garden system, they may be able to grow the cilantro and chilies themselves. Paul et al (2015) found that chickpea grown with increasing rows of cilantro was shown to decrease pod borer (Helicoverpa armigera) infestation, which severely reduces yield all throughout India, other parts of South Asia, as well as parts of the Middle East (Wubneh, 2016; Pande et al., 2011). Farmers may choose to intercrop chickpea and cilantro to control pod borer infestation. The cilantro that they do not use for their roti and curries can be dried and packaged for increased value at a market.

To make besan, dried chickpeas need to be milled. It is important that the chickpeas are completely dried or else they will not be ground properly. A farmer may choose to dry their chickpeas in the sun on a tarp, or they can purchase a small-scale dehydrator from a supplier such as the online Alibaba group. A small-scale vegetable dehydrator retails for $11USD and can be found in the corresponding link provided in Table 1. This dehydrator requires electricity, however, so it may be more viable to use the tarp method. After the chickpeas are thoroughly dried they can then be milled. A small-scale and low-cost manual grain miller can be purchased to mill the dried chickpeas into flour. The corresponding link (Table 1) shows an example of a corn mill grinder that retails for $27USD. If a farmer has access to electricity, they can purchase a slightly larger-scale electric miller for roughly $60-150USD (Table 1). This equipment may be purchased once the farmer has profited enough from their business and wishes to expand their operation. The roti can be made by hand in the traditional manner on a large cooking surface on a fire. The target market for besan ki roti are local roadside stands where they can be sold with a variety of curries, as rotis are best eaten fresh. If the farmer wishes to sell to a local grocery store, they could wrap them in a cellophane bag to keep it fresh for a couple days. To attract potential buyers, the packaging can emphasize that the rotis are handmade, local, and fresh. Cellophane food bags can be bought for cheap in bulk from an industrial supplier (Table 1)

Middle East

Middle Eastern countries where chickpea cultivation and consumption are common include Iran, Israel, and Jordan. Value addition ideas for farmers in these countries include a food stand selling hummus and falafel. Both falafel and hummus contain a lot of garlic, and farmers can choose to grow their own garlic on their plot of land. However, it is not known if these crops would work well together in an intercropping system. Falafel contains cilantro and parsley, however, which can be grown in intercrop with chickpea, as previously mentioned (Paul et al., 2015).

Falafels are made with dried chickpeas, so the farmer can use a small-scale vegetable dehydrator (Table 1) or they can dry them on a tarp in the sun. After the chickpeas are soaked, they are combined with herbs and other seasonings like lemon juice, garlic, olive oil, and cumin and then placed in a food processor. If their access to electricity is limited, they can use a manual food blender (Table 1). If they have access to electricity they can opt for an electric blender (Table 1). To make hummus, fresh or soaked chickpeas are blended with ingredients like tahini paste, garlic, and olive oil. They can use the manual or electric blender to do so.

The target market for falafel and hummus is a roadside or market stand where they food can be sold fresh. Eventually the farmer may choose to package their food, and have it shipped to urban or local grocery stores.

North Africa

North African countries where chickpea cultivation and consumption are common include Algeria, Ethiopia, and Morocco. Value addition ideas for farmers in these countries include roasted chickpea snacks like leblebi (common in Algeria and parts of the Middle East) and dabocolo, a traditional Ethiopian chickpea snack. Nefro is also a common way that Ethiopians consume desi chickpeas. It is made with boiled wheat and salt. This is worth mentioning as chickpeas are often grown in intercrop systems with wheat and other cereals (Pande et al., 2011). Ethiopian “kolo” is a popular snack which is a mix of roasted grains like barley mixed with chickpea and sunflower seeds (Table 1). This can be achieved with an electric oven if they have access to electricity or they can use a small gas oven (Table 1). The farmer can sell their chickpea snacks at a roadside or market stand, which is often done in Ethiopia, or it can be packaged in cellophane bags and sold at a market.

Table 1: Recommended recipe and equipment links for chickpea processing

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Helpful Links to Get Started

- Chickpea production guide: https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/em8791.pdf

- Manual on small-scale fruit and vegetable processing: http://www.fao.org/docrep/x0209e/x0209e00.HTM

- Saxena and Singh (1987) book, “The Chickpea”, can be purchased at this link: https://www.amazon.ca/Chickpea-Mohan-C-Saxena/dp/0851985718

- YouTube video of Besan ki roti recipe: https://www.youtube.com/watch?v=a21lpI5Xcg8

- YouTube video of Falafel and hummus recipe: https://www.youtube.com/watch?v=1N-l_lBSoNk

- YouTube video of Nefro recipe (in Ethiopian with English subtitles): https://www.youtube.com/watch?v=zCZC8ZxpqRk

References

1. Azar, M. R., Javanmard, A., Shekari, F., Pourmohammad, A., & Esfandyari, E. (2013). Evaluation of yield and yield components chickpea (Cicer arietinum L.) in intercropping with spring barley (Hordeum vulgare L.). Cercetari agronomice in Moldova, 46(4), 75-85.

2. Corp, M., Machado, S., Ball, D., Smiley, R., Petrie, S., Siemens, M., & Guy, S. (2004). Chickpea production guide. Oregon State University. Retrieved from https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/em8791.pdf

3. Pande, S., Sharma, M., Ghosh, R., Rameshwar, T., & Reddy, D. R. (2011). Chickpea diseases and insect pest management. Euphytica, 182(182), 1-9.

4. Paul, S. K., Mazumder, S., Mujahidi, T. A., Roy, S. K., & Kundu, S. (2015). Intercropping coriander with chickpea for pod borer insect suppression. World Journal of Agricultural Sciences, 11(5), 307-310.

5. Saxena, M. C., & Singh, K. B. (1987). The chickpea. Commonwealth Agricultural Bureaux International, Wallingford, U.K.

6. Wubneh, W. Y. (2016). Biological control of chickpea pod borer, Helicoverpa armigera Hubner (Lepidoptera: Noctuidae): A global concern. World Scientific News, 2(45), 92-110.