The process of properly selecting, curing and storing sweet potato roots for the production of slips vine cuttings is a key step in profitable sweet potato production. Sweet potato processing technology systematically introduces processing technologies of sweet potato starch and its series products including sweet potato protein, dietary fibers, pectin, granules, anthocyanins and chlorogenic acids. Selection of sweet potato variety for high starch extraction. Sweet potato, either fresh, grated, cooked and mashed, or made into flour, could with high potential for success, replace the expensive wheat flour in. This book covers the processing and technological aspects of root and tuber foods, detailing the production and processing of roots and tubers such as taro, cassava, sweet potato. Lamb weston plans sweet potato processing plant in louisiana august 5, 2009 conagra foods lamb weston announced today plans to build a new, stateoftheart, environmentally friendly processing plant near delhi, louisiana, designed primarily to process highquality sweet potatoes from the region into fries and related products. Field or site selection soil characteristics one of the most important steps in sweet potato production is selecting the right soil based on the following characteristics. Sweet potatoes gained some popularity as a lowercarb potato in the early 2000s. Potato farming and processing business plan is a lucrative business that needs a lot of strategic planning to start and a business coach like dayo adetiloye to help. If you are unsure about weevils in your area, contact your county extension agent or the state department of agriculture.
Postharvest processing technology of sweet potatoes in sichuan, china hening liu1 abstract sweet potato is one of the important crops in china, its growing area and yield rank the first in the world. Solid waste includes peelings and trimmings from the sweet potato root and sweet potato leaves and vines. Research open access preparation and improved quality. With high starch content, it is well suited to processing and has become an important source of raw material for. Research to date with sweet potato starch extraction or processing has concentrated on overallyields of starch from fresh roots without consideration of the extraction ef. They cannot justify purchasing largescale equipment for small operations, but. The most common type of sweet potato found in us markets is the moist. They cannot justify purchasing largescale equipment for small operations, but farm enough land and crops to merit tools and. There is an urgent need to understand the reason for variability in the starch. The most profitable marketing opportunities for sweet potatoes in kentucky are through local fresh markets, such as farmers markets, direct delivery and csa, and onfarm stands. As one of the largest sweet potato and cucumber processing facilities in the united states, we are able to deliver yearround sweet potatoes and seasonal pickling cucumbers.
Root and tuber crops cassava, yam, potato and sweet potato. Processing of sweetpotato flour the processing schema is shown in the figure 1. It was intended for use at village level and involved washing, peeling, slicing, blanching, cooling and drying. Potatoes are rich in carbohydrates, dietary fiber, and potassium. Sweet potato drying usually performed traditionally with the use of the sun, which is a timeconsuming method about 56 hours and produces an inferior quality product with high health risk due to high contamination. This sample potato farming and processing business plan in nigeria can be used for grant applications, bank loans, proposal writing, business concept note, competitions etc. However, the adaptation of sweet potato processing technologies and value.
Sweetpotato vines also provide the basis for a highprotein animal feed. Potential use of byproducts from cultivation and processing of sweet potatoes. The exact presprouting conditions used will depend on varietal characteristics, individual operations, preferences and experiences. The study was done during the months of november, 2010 and january, 2011. Recognizing this, the national sweetpotato collaborators group and the national sweetpotato association endorsed spelling sweetpotato as one word in 1989. In recent times, the interest of consumers, as well as the food and pharmaceutical industry, in nutrients of vegetable origin with antioxidant properties, has increased.
Sweet potato casserole is a side dish of mashed sweet potatoes in a casserole dish, topped with a brown sugar and pecan topping. Sweetpotato, processing, preservation, storage, postharvest. It represents the first interpartner effort, post2008, aimed at producing technical. When potatoes are compared with other vegetables, they are higher in calories 3 calories per medium potato than others excluding sweet corn due to their starch composition, but they are. Only sweet potatoes ipomoea batatas are grown in the u. Sweet potatoes flour may be prepared from dried chips and the flour may be reconstituted into foofoo. Drying of sweet potato ipomoea batatas chipped and grated. Constraints in processing of sweet potatoes included lack of processing tools.
Sweetpotato use has diversified considerably over the last four decades. Chipping or cutting sweet potato roots into thin slices should be done to facilitate efficient drying, handling and storage, and to avoid jamming the grinding machine during feed milling operations. The study reveals that hassan district alone account for more than 41 percent potato production in the state. The sweet potato became a favorite food item of the french and spanish settlers and thus continued a long history of cultivation in louisiana. Purchase sweet potato processing technology 1st edition. Sweet potato sp is an important root crop grown all over the world and consumed as a vegetable, boiled, baked or often fermented into food and beverages.
The tubers are peeled, washed, grated, pressed and roasted as cassava garri. A study was conducted on the suitability of processing sweet potato tubers into chips using locally constructed solar panels within the semi forest and the transitional climatic zone of ghana. The term sweet potato is really a misnomer, because it implies they are potatoes that are sweet, when in reality they are as different from potatoes as carrots are. Nutritional and medicinal qualities of sweetpotato tops. More consumer familiarity with fresh sweet potatoes and increases in sweet potato fry consumption contribute to the increase.
Sweet potato is next to cassava manihot esculenta crantz in acreage, widespread cultivation, diversified uses etc. The study was conducted to analyze production, processing and marketing of potato in karnataka. Certified seed will produce 15 20% higher yields than standard seed. Sweetpotato production, processing, and nutritional. They are moderately rich in vitamin c if not boiled, calcium, and folate folic acid. Unfortunately spp is generally discarded as industrial waste during sweet potato starch processing. There is a growing program of research in africa on yam, cassava, potato and sweet potato addressing genetic enhancement, seed systems, production, marketing and nutrition impacts.
Sweet potato consumption is highest among americans over 60, and sweet potatoes may have special appeal to aging, healthconscious baby boomers. Characteristics of fresh sweetpotato roots, variety tanzania. Crops grown in heavy clay loams produce irregular shaped tubers. Liquid waste results from various processing methods and creates significant amounts of nutrient rich waste water. Sweet potato leaves were used in six different ways to prepare vegetable relish. For the food processing industry, the unavailability of puree and. Inadequate intake of these two nutrients was relevant to a higher mortality of both children and pregnancies. Purpose table or processing potato can be grown from true potato seed tps, plantlets or tubers. Cleaning and trimming this operations aim to remove soil and other foreign material from the sweetpotato root surface, portion damaged by weevils or other pests, and any other unwanted portions of the roots. Carotenoids and folate are two mandatory supplying micronutrients for children or pregnant women. Sweet potato originated from tropical central america.
Sweet potato roots can be processed into dehydrated forms such as dried chips and flour for storage and use in food preparations. It is also not tolerant to water logging which can cause tuber rot. Chemistry, processing, and nutrition presents foundational information, including identification, analysis, and use of chemical components from sweet potato in a variety of food and nonfood uses sweet potatoes can be easily propagated, are rich source of carbohydrates and functional components, and are highly productive, which makes them most suitable for production of staple. Other experiments were also conducted to study the effects of incorporating sweet potato flour to wheat flour in producing biscuits. Age of cultivars varieties cutting means months gem miguela chipper bonara for ages tuber weight per plant kg 2 1. Click download or read online button to get processed sweet potato book now. Retention of carotenoids in orangefleshed sweet potato. These constraints therefore need to be addressed to expand value. Selected tubers are washed and left in water with a teaspoonful of squeezed lemon promotion of sweetpotato for the food industry in nigeria nutrients. Warming for two to four weeks at temperatures from 75 degrees f to 85 degrees f, with a relative humidity of 90 percent and adequate ventilation, is optimal.
To the cook, sweet potatoes are easier than pie or sweet potato pie. Sweet potatoes our story what sets nash produce apart. It is a perennial vine adaptable to different agroecological zones. Sweet potatoes to be stored for later marketing or for seed stock must be cured immediately after harvest to minimize storage losses. By 1990, its growing area in sichuan dropped to 790,000 ha. The processing steps for sweet potato beverage invo lve washing, peeling, trimm ing to remove damaged parts, steaming, extracting, and formulating with 12% wv. Kenya agricultural research institute kari and international potato centre cip have developed several orange fleshed sweet potatoes rich in vitamin a. Raw material sweetpotato roots can be a raw material for processing flour. Lamb weston plans sweet potato processing plant in louisiana. Foods free fulltext effect of thermal processing on. Sometimes the tubers are eaten in the form of pounded foofoo. Sweetpotato roots can be a raw material for processing flour. Process of producing sweetpotato flour vital hagenimana and constance owori 1. Post harvest handling postharvest management practices that reduce product loss to spoilage or shrinkage will reduce microbial risks.
Remember, poorquality seed roots will not produce the quality slips needed for the establishment and production of highyielding sweet potato crops. Sweet potatoes arent started by seed like most other vegetables, theyre started from slipssmall rooted pieces of tuber which are sliced right off the sweet potato. Students were shown how to prepare several products from sweet potato by processing into grated, flour or mash. The global situation of sweet potato as a commodity is oke and workneh 4991 that it is widely grown throughout the world. In potato processing, for example in french fry production, pef systems are an excellent alternative for traditional preheaters. The processed products were then used to make ready to consume products using recipes compiled by kari, cip and bac. Use of tubers is the best method for potato production. The reason you dont peel them first is because raw sweet potato will turn an unsightly brown in the air very, very fast. Processed sweet potato download ebook pdf, epub, tuebl, mobi. This study is intended to investigate the thermal impact on the changes of carotenoids and folate in sweet potato roots sprs. It represents the first interpartner effort, post2008, aimed at producing technical guidelines that can be used by decision makers in developing countries to improve the sustainability of potato production and boost the potato subsectors contribution to social and economic development. Peters 1998 examined related aspects of sweet potato production, processing, utilization, and marketing to set postharvest research strategies for addressing food security and income generation in uganda.
Pdf aseptic processing of sweetpotato purees using a. Sweetpotato sparri processing stages are similar to garri cassava toasted granules processing stages. Fresh sweet potato roots are bulky and highly perishable therefore sweet potato roots can be sliced, dried, and ground in order to produce. They can simply be scrubbed, poked with a fork in a few places, and baked at 400f for 35 minutes to one hour, until they give a bit when you squeeze them in your potholderprotected hand. Sweet potato processing and uses many parts of the sweetpotato plant are edible, including the root, leaves, and shoots. The book provides a detailed and comprehensive account of physicochemical and functional properties of sweet potato products, the nutritional components extracted from sweet potato, as well as their utilization in food, medicine and cosmetic fields. Lam is the sixth most important food crop in the world, and new uses for this crop have been identified. Chemistry, processing, and nutrition presents foundational information, including identification, analysis, and use of chemical components from sweet potato in a variety of food and nonfood uses. Everything you ever wanted to know about sweetpotato. Aseptic processing of sweetpotato purees using a continuous flow microwave system. Carotenoids were identified by high performance liquid. An fao postharvest project in cameroon introduced an improved method for the dehydration of roots and tubers which was adapted from the cip design.
The retention of carotenoids was studied in the storage roots of ten sweet potato clones possessing different intensities of dark orangeflesh colour in four different processing methodsoven drying, boiling, sun drying and frying. Potato farming and processing business plan in nigeria. This has not functioned as an incentive to increase processing of sweet potatoes on a larger scale. This study was aimed to analyze the income of sweet potato farm, to identify factors those are effect the production of sweet potato, to analyze technical efficiency and factors of technical. The cubes of sweet potato are expected to be at least lukewarm going into the jars.
Nutritional and medicinal qualities of sweetpotato tops and leaves shahidul islam professor plant science sweetpotato ipomoea batatas l. Pdf quality of sweet potato as a raw material for food. This site is like a library, use search box in the widget to get ebook that you want. Trinity frozen foods uses 100% nc grown sweet potatoes in 100% of its products. White and purple flesh sweet potatoes, as well as organic sweet potatoes, are possible market niches that kentucky growers could fill.
Sweetpotato production, processing, and nutritional quality. The cultivation and processing of sweet potatoes into a variety of products yields both solid and liquid organic waste. Truong and others published development and transfer of processing technologies for fruity food products from sweetpotato. In potato mash production, pulsed electric field processing evens out the structural variations in potatoes, resulting in a large reduction of the number and size of lumps and a smoother mash for a better bite.
The results indicated that the extent of retention varied with the method of processing. Trinity has a fresh packing plant in clinton, nc, a frozen processing plant in pembroke, nc and works with a team of growers located in eastern north carolina to manufacture and distribute frozen sweet potato fries and sweet potato flour. The relevant findings indicated the need for more research. Sweet potato processing and uses international potato center. Sweet potato production is not recommended for growers who do not plan to grow the crop for several years. Although it is relatively easy to grow sweet potatoes without chemi. These substances play an important role in the fight against free radicals that. The crop is sensitive to drought at tuber initiation stage 5060 days after planting. High quality tubers are best produced on fertile, well drained, sandy loams.
In sichuan province, sweetpotato and potato rank first both in china and in the world by the planting area and total yield. Many parts of the sweetpotato plant are edible, including the root, leaves, and shoots. The research into sweet potato processing has established the fact that there is a lot more in sweet potatoes than its starch. Smallscale technology and practices for sweet potato growing in southeast oklahoma 1 introduction market gardeners are often caught in a technological doughnut hole. Our range of valueadded products, specialty and private label, and numerous services ensure our team can provide the perfect.
Sichuan province has the largest growing area of sweet potatoes in china which amounted to 873,000 ha with total yield of 3,314,000 tons in. Sweet potato protein spp is mainly composed of sporamins, which are rich in essential amino acids, and spp is comparable with other superior quality vegetable proteins mu et al. Smallscale technology and practices for sweet potato growing. Some researchers have concluded that it is not profitable for ugandan farmers to engage in sweet potato processing, while others have reported otherwise. Martins effect of age of planting material onyields of sweet potato from cuttings, tropical root and tuber crops newsletter 15. Development of a sweetpotato processing industry and its impact in. Sweet potato processing technology 1st edition elsevier. Not only are sweet potatoes very easy to grow, they are also drought and heattolerant, and have few pests or diseases. The book provides a detailed and comprehensive account of physicochemical and functional properties of sweet. Nutritional and medicinal qualities of sweetpotato tops and.