browning solution
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It indicates that the raw materials can be stored in temperature of 0-4℃ for 60 days, they must be immersed in clean water for more than one hour before processing, and peeling be carried out in flowing water; that color preserving solution should be 1.0% NaCl+0.2% citric acid+0.5% Vitamin C+110ppm dichloro isocyanuric acid sodium; that combined browning inhibiting solution is conspicuously effective, and immersion time better be around 20 minutes; that sterilization solution ought to be 200ppm dichloro isocyanuric acid sodium+0.5% ascorbic acid+0.3 citric acid, and 10 minutes' immersion will achieve the effect of sterilization and inhibiting browning; and that after 20-21 minutes of quick-freezing in temperature of -31℃~-32℃, the products can be preserved under -18℃ for a whole year.
通过对速冻牛蒡加工过程中原料储存、削皮方法、护色、浸泡时间、无热杀菌、包装形式等参数进行研究表明:原料0-4℃可储存60天,加工前用清水浸泡1小时以上,削皮时在流水中进行,护色液筛选的1.0% NaCl+0.2%柠檬酸+0.5%维生素C十110ppm二氯异氰脲酸钠;复合褐变抑制溶液在抑制褐变方面有显著的效果,浸泡处理时间为20分钟为宜;杀菌液为200ppm二氯异氰脲酸钠+0.5%抗坏血酸+0.3柠檬酸,浸泡10分钟即可达到灭菌和抑制褐变的作用;经-31℃~-32℃温度下速冻20~21分钟,产品在-18℃条件下可储存一年。
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Blanching at 80℃ for 10min before peeling, dipping treatment in compounded solution of browning inhibitor for 2 hours after slicing and drying at 50℃ were beneficial to the colour of yam product, because which could decrease the activity of peroxidase and polyphenol oxidase.
通过去皮前对山药进行热烫处理(80℃,10min),切片后立即用复合护色液浸泡处理(浸泡2h),可有效改善山药产品的色泽,其原因是这些处理能够显著降低多酚氧化酶和过氧化物酶的活性。