The cultivation and processing of sweet potatoes into a variety of products yields both solid and liquid organic waste. This site is like a library, use search box in the widget to get ebook that you want. Sweet potato sp is an important drought resistant crop grown in western kenya. The product is well accepted by the sensory panelists. The most common type of sweet potato found in us markets is the moist. It can also serve as a source of energy, nutrients and minerals and contributes to the daily nutrient needs for. The comparison was based on colour, taste, consistency and acceptability. Needs and costs of flour processing equipment we are talking about the production of sweetpotato flour in rural area at the village level. Potential use of byproducts from cultivation and processing. It is also not tolerant to water logging which can cause tuber rot. Potatoes are rich in carbohydrates, dietary fiber, and potassium. Liquid waste results from various processing methods and creates significant amounts of nutrient rich waste water.
The hand chipping of roots is a traditional technology and only requires a knife. Purchase sweet potato processing technology 1st edition. Included are figures, tables and charts throughout the book. The samples were incubated in a water bath at 60c for 1 h and treated with. More consumer familiarity with fresh sweet potatoes and increases in sweet potato fry consumption contribute to the increase. Participatory methods of technology transfer used consisted of.
Root and tuber crops cassava, yam, potato and sweet potato. Sweet potato processing technology 1st edition elsevier. Processing of sweetpotato flour the processing schema is shown in the figure 1. Sweet potato processing technology request pdf researchgate. An approach in the present study was to replace the wheat flour in. This study aimed at producing nab from cassava and sweetpotato roots. Click download or read online button to get potato production processing and technology book now. 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. Foods free fulltext effect of thermal processing on. Smallscale technology and practices for sweet potato growing.
This study is intended to investigate the thermal impact on the changes of carotenoids and folate in sweet potato roots sprs. Sweet potatoes are coldsensitive and are planted after all danger of frost has passed. In potato processing, for example in french fry production, pef systems are an excellent alternative for traditional preheaters. Development of a sweetpotato processing industry and its impact in. 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. Processing and utilization of sweet potato has until very recently been limited to washing, boiling or roasting for human consumption. 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. Smallscale technology and practices for sweet potato growing in southeast oklahoma 5 transplanting s weet potato slips are hardy. The exact presprouting conditions used will depend on varietal characteristics, individual operations, preferences and experiences. 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. Person to person discussions during agriculture show and. Potato production processing and technology download ebook. The potato is a substantial, perishable product of low intrinsic cost and high transport expense, which limits its export possibilities. 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.
The technology will provide pathway to use sweet potato as ingredient for beer making in large scale. Apr 15, 2019 sweet potato is a major root crop utilized widely for diverse food applications. If you are looking for a company active in the potato industry, you can find it in the potatopro directory. Solid waste includes peelings and trimmings from the sweet potato root and sweet potato leaves and vines. Sweet potato production is not recommended for growers who do not plan to grow the crop for several years. Sweet potato recipes that had been prepared and tasted by students were selected to suit farmers background. Sweetpotato roots can be a raw material for processing flour. Sweet potato processing technology by taihua mu overdrive. 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. Limitations and processing technologies of sweet potato. Carotenoids were identified by high performance liquid. Water extract of the freezedried sweet potato samples 0. Sweet potatoes are usually bedded about seven weeks before fieldsetting time. They cannot justify purchasing largescale equipment for small operations, but farm enough land and crops to merit tools and.
The production rate of sweet potato had been reducing alarmingly in most of the sweet potato producing countries of the world. 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. Even with the use of mechanical harvesters and other production technology, labor requirements are about 60 manhours per acre. Crops grown in heavy clay loams produce irregular shaped tubers. Production of sweet potatoes can be divided into threeperiodic stages. Sweet potato processing technology systematically introduces processing technologies of sweet potato starch and its series products including sweet potato. However, the operation is perillous and accidents of fingers cut or injured often occur. 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 flour processing methods involve several unit operations including selection of raw material, cleaning and trimming, washing and brushing, slicing, drying, milling, packaging and storage. They are moderately rich in vitamin c if not boiled, calcium, and folate folic acid. Carotenoids and folate are two mandatory supplying micronutrients for children or pregnant women.
Sweet potato based products are of high quality and could. The farmers were briefed on nutrient component of sweet potato with emphasis on vitamin a in orange fleshed varieties. In spite of these drawbacks, the exports of fresh potatoes have increased slightly. 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.
Currently simplot is consolida ng potato processing opera ons to one. The book provides a detailed and comprehensive account of physicochemical and functional properties of sweet. Processing enables the usability of sweet potato in various forms for longer durations. Some growers simply drop them on the ground and push the rooting end into the soil with a stick. We experimented with two commercial handheld transplanters. Postharvest processing of sweet potato involves grading and sorting, cleaning, peeling, drying or secondary processing and storage.
Selection of sweet potato variety for high starch extraction. Everything you ever wanted to know about sweetpotato. 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. The appearance of new markets and the development of potato processing industry have increased the profitability of the product. 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.
Pef technology not only results in superior cut quality and a reduction of french fry breakage and shattering, but also improves drying efficiency. Most nonalcoholic beverages nabs are produced from fruits, dairy, cocoa etc. The crop is sensitive to drought at tuber initiation stage 5060 days after planting. July 2002 ii users feedback solicited the authors welcome suggestions for additions to this manual and for changes in the materials included in this edition and will include such changes in the next edition. 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. Idahos food processing industry focuses on the states dominant commodi es dairy, potatoes, barley, sugar beets and trout with the j. Inadequate intake of these two nutrients was relevant to a higher mortality of both children and pregnancies. Potato production, processing and technology sciencedirect. Sweet potato processing and uses international potato center. Sweetpotato vines also provide the basis for a highprotein animal feed. Mus research expertise includes physicochemical, functional and nutritional properties of potato and sweet potato components. The global situation of sweet potato as a commodity is oke and workneh 4991 that it is widely grown throughout the world. Postharvest processing and utilization of 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.
Sweetpotato production, processing, and nutritional quality. Institute of agroproducts processing science and technology of. Sweet potatoes gained some popularity as a lowercarb potato in the early 2000s. 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 flour can add natural sweetness, color and flavor to processed food products. 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. High quality tubers are best produced on fertile, well drained, sandy loams. Martins effect of age of planting material onyields of sweet potato from cuttings, tropical root and tuber crops newsletter 15. 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.