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Optimization of pretreatments and process parameters for sorghum popping in microwave oven using response surface methodology

机译:利用响应面法优化微波炉中高粱爆裂的预处理和工艺参数

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摘要

Sorghum is a popular healthy snack food. Popped sorghum was prepared in a domestic microwave oven. A 3 factor 3 level Box and Behneken design was used to optimize the pretreatment conditions. Grains were preconditioned to 12–20 % moisture content by the addition of 0–2 % salt solutions. Oil was applied (0–10 % w/w) to the preconditioned grains. Optimization of the pretreatments was based on popping yield, volume expansion ratio, and sensory score. The optimized condition was found at 16.62 % (wb), 0.55 % salt and 10 % oil with popping yield of 82.228 %, volume expansion ratio of 14.564 and overall acceptability of 8.495. Further, the microwave process parameters were optimized using a 2 factor 3 level design having microwave power density ranging from 9 to 18 W/g and residence time ranging from 100 to 180 s. For the production of superior quality pop sorghum, the optimized microwave process parameters were microwave power density of 18 Wg−1 and residence time of 140 s.
机译:高粱是一种流行的健康休闲食品。膨化高粱是在家用微波炉中制备的。 3因子3级Box和Behneken设计用于优化预处理条件。通过添加0-2%的盐溶液将谷物预处理至12-20%的水分含量。将油(0-10%w / w)施加到预处理的谷物上。预处理的优化基于爆破产量,体积膨胀率和感官评分。发现最佳条件为16.62%(wb),0.55%的盐和10%的油,爆裂率为82.228%,体积膨胀率为14.564,总体可接受度为8.495。此外,使用2因子3级设计优化了微波工艺参数,微波功率密度范围为9至18 W / g,停留时间为100至180秒。为了生产优质的高粱,最佳的微波工艺参数是18 Wg -1 的微波功率密度和140 s的停留时间。

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