Quality evaluation of lowland crops: progress and future direction
1995
Senayit Yetneberk (Nazret Research Center (Ethiopia))
As part of the crop improvement effort, breeder materials were tested for quality in terms of physical, chemical and organolepic paramers. Studies have been made to compare quality atributes of new cultivars, assess the likely success of consumer acceptability in order to select the best for further multiplication and dissemination. The crops under consideration were field crops (sorghum, haricot bean, mize, tef) and horticultural crops (cirus, banana, papaya, tomatoes, sweet potato). In the initial phase of the program, the emphasis was on preservation of fruits and vegetables by dehydration method, specifically sun drying, shade drying and osmosis dehydration. The study was made with variety of horticultural crops to study preservation methods and observe end-product quality differences among varieties. In the early 80's the emphasis was on processing of horticultural crps. A plot plant was instlled to process jams. juices, fruit preserves, tomato paste and ketchup. In the mid-80's haricot bean and sorghum were included in the program. The emphasis shifted towards utilization aspect of the crop in terms of standardization of traditional foods, shelf-life studies and cooking time evaluations. In mid-90's few basic research programs were proposed in the area of fermentation, chemical composition and new product development. The future direction of the program is to include processing of animal products, encompass all major crops for varietal evaluation, new product development, and conduct some basic research.
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