Potential use of byproducts from cultivation and processing. This potato processing operations book, written in terms the nonprofessional plant worker will understand, is a must reference for all food processors, technologists, executives, students etc. Postharvest processing of sweet potato involves grading and sorting, cleaning, peeling, drying or secondary processing and storage. Sweet potato processing and uses many parts of the sweetpotato plant are edible, including the root, leaves, and shoots.
Limitations and processing technologies of sweet potato. Water extract of the freezedried sweet potato samples 0. Sweet potato flour can add natural sweetness, color and flavor to processed food products. Age of cultivars varieties cutting means months gem miguela chipper bonara for ages tuber weight per plant kg 2 1. It is also not tolerant to water logging which can cause tuber rot. The most common type of sweet potato found in us markets is the moist. Juice and spent process water are valuable fertilizers disposed of by land spreading or fermentation of biogas. Included are figures, tables and charts throughout the book.
We experimented with two commercial handheld transplanters. Potato production processing and technology download ebook. In the process of development of sweet potato and forming of processing industry, postharvest technology has played an important role. Institute of agroproducts processing science and technology of. 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.
This study aimed at producing nab from cassava and sweetpotato roots. 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. 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. Sweet potato originated from tropical central america.
Processing and utilization of sweet potato has until very recently been limited to washing, boiling or roasting for human consumption. Liquid waste results from various processing methods and creates significant amounts of nutrient rich waste water. Sweetpotato production, processing, and nutritional. Most nonalcoholic beverages nabs are produced from fruits, dairy, cocoa etc.
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. More consumer familiarity with fresh sweet potatoes and increases in sweet potato fry consumption contribute to the increase. High quality tubers are best produced on fertile, well drained, sandy loams. Everything you ever wanted to know about sweetpotato. It can also serve as a source of energy, nutrients and minerals and contributes to the daily nutrient needs for.
Sweetpotato vines also provide the basis for a highprotein animal feed. An approach in the present study was to replace the wheat flour in. Pef technology not only results in superior cut quality and a reduction of french fry breakage and shattering, but also improves drying efficiency. The book provides a detailed and comprehensive account of physicochemical and functional properties of sweet. The exact presprouting conditions used will depend on varietal characteristics, individual operations, preferences and experiences.
Sweet potato flour processing methods involve several unit operations including selection of raw material, cleaning and trimming, washing and brushing, slicing, drying, milling, packaging and storage. Freezedried and milled sweet potato samples were sent to the quality plant product laboratory department of crop science, university of gottingen, germany for sugar analysis. Selection of sweet potato variety for high starch extraction. The farmers were briefed on nutrient component of sweet potato with emphasis on vitamin a in orange fleshed varieties.
Sweet potato processing and uses international potato center. Smallscale technology and practices for sweet potato growing. Click download or read online button to get potato production processing and technology book now. 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. Production of sweet potatoes can be divided into threeperiodic stages. Participatory methods of technology transfer used consisted of. 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, yam and elephant foot yam. If you are unsure about weevils in your area, contact your county extension agent or the state department of agriculture. The hand chipping of roots is a traditional technology and only requires a knife.
Idahos food processing industry focuses on the states dominant commodi es dairy, potatoes, barley, sugar beets and trout with the j. Foods free fulltext effect of thermal processing on. However, the operation is perillous and accidents of fingers cut or injured often occur. Ordinarily, 16 to 20 square feet of bed surface will be needed for each bushel. Sweet potato recipes that had been prepared and tasted by students were selected to suit farmers background. The potato is a substantial, perishable product of low intrinsic cost and high transport expense, which limits its export possibilities.
Whether you are looking to buy french fries in australia or potato starch in europe, potato processing equipment or a potato storage, we have all manufacturing companies in the sector neatly organized by sector and product. Sweet potato production is not recommended for growers who do not plan to grow the crop for several years. Sweet potato based products are of high quality and could. Apr 15, 2019 sweet potato is a major root crop utilized widely for diverse food applications. The global situation of sweet potato as a commodity is oke and workneh 4991 that it is widely grown throughout the world. Sweet potato processing technology systematically introduces processing technologies of sweet potato starch and its series products including sweet potato. 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. Smallscale technology and practices for sweet potato growing in southeast oklahoma 5 transplanting s weet potato slips are hardy. In potato processing, for example in french fry production, pef systems are an excellent alternative for traditional preheaters. Needs and costs of flour processing equipment we are talking about the production of sweetpotato flour in rural area at the village level. Some growers simply drop them on the ground and push the rooting end into the soil with a stick. Potato production, processing and technology sciencedirect.
Inadequate intake of these two nutrients was relevant to a higher mortality of both children and pregnancies. Sweet potatoes are usually bedded about seven weeks before fieldsetting time. The cultivation and processing of sweet potatoes into a variety of products yields both solid and liquid organic waste. Mus research expertise includes physicochemical, functional and nutritional properties of potato and sweet potato components.
Root and tuber crops cassava, yam, potato and sweet potato. Sweet potato processing technology request pdf researchgate. Carotenoids were identified by high performance liquid. Person to person discussions during agriculture show and. This study is intended to investigate the thermal impact on the changes of carotenoids and folate in sweet potato roots sprs. Carotenoids and folate are two mandatory supplying micronutrients for children or pregnant women. Currently simplot is consolida ng potato processing opera ons to one. Sweet potato starch is used in the manufacture of sweeteners, sizing of paper and textile and it is an excellent food starch used as a thickener and stabilizer. Sweet potato processing technology by taihua mu overdrive. They cannot justify purchasing largescale equipment for small operations, but farm enough land and crops to merit tools and. The appearance of new markets and the development of potato processing industry have increased the profitability of the product.
The technology will provide pathway to use sweet potato as ingredient for beer making in large scale. The product is well accepted by the sensory panelists. Martins effect of age of planting material onyields of sweet potato from cuttings, tropical root and tuber crops newsletter 15. Crops grown in heavy clay loams produce irregular shaped tubers. Processing enables the usability of sweet potato in various forms for longer durations. Sweet potatoes are coldsensitive and are planted after all danger of frost has passed. The comparison was based on colour, taste, consistency and acceptability.
The production rate of sweet potato had been reducing alarmingly in most of the sweet potato producing countries of the world. Smallscale technology and practices for sweet potato growing in southeast oklahoma 1 introduction market gardeners are often caught in a technological doughnut hole. 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. Solid waste includes peelings and trimmings from the sweet potato root and sweet potato leaves and vines. Sweetpotato roots can be a raw material for processing flour. Sweet potato processing technology 1st edition elsevier. 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 potato sp is an important drought resistant crop grown in western kenya. 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. Potatoes are rich in carbohydrates, dietary fiber, and potassium. Development of a sweetpotato processing industry and its impact in. The crop is sensitive to drought at tuber initiation stage 5060 days after planting. Purchase sweet potato processing technology 1st edition. Sweet potatoes gained some popularity as a lowercarb potato in the early 2000s. They are moderately rich in vitamin c if not boiled, calcium, and folate folic acid. 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. Postharvest processing and utilization of sweet potato.
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