共查询到18条相似文献,搜索用时 156 毫秒
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目的 研究山药罐头加工中最佳的护色条件。方法用柠檬酸、维生素C及氯化钙为护色剂进行护色实验。结果最佳护色条件为:0.5%柠檬酸+1.0%维生素C+0.25%氯化钙。结论3种护色剂配合处理后可防止山药褐变,提高山药罐头质量。 相似文献
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通过单因素多水平、多因素多水平的正交实验,对山药罐头的加工工艺进行了研究。结果表明,加工条件为护色液CaCl2浓度为1.5%,65℃下预煮30min,装罐液中黄原胶浓度为0.3%,糖酸比为133,杀菌时间20min,在此条件下罐头产品感官与品质最佳。 相似文献
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山药果脯的加工工艺探讨 总被引:3,自引:0,他引:3
本文叙述山药具有良好的药用和食用价值,试验根据食品糖渍的基本原理,探讨山药果脯的加工工艺,并对加工过程中的护色、烫漂、糖煮、烘制等工艺进行优化选择。 相似文献
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对山药饮料加工过程中易引起褐变的环节及稳定性进行了研究,比较了不同护色剂的护色效果和不同稳定剂的稳定效果,并确定了最佳护色工艺及稳定剂。结果表明:最佳护色条件为山药在20℃的质量分数0.5%抗坏血酸+0.5%柠檬酸+0.01%氯化钠水溶液中浸泡15 min,可防止其切片后褐变;另外,复配稳定剂(质量分数0.2%CMC+0.15%瓜尔豆胶+0.15%卡拉胶)对山药果肉饮料的稳定效果最为明显,所得山药饮料的浆液组织形态均匀,长时间放置不分层。 相似文献
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对野生猪毛菜幼嫩茎叶进行采集腌制、护色、保脆及杀菌的实验,采用软包装复合袋真空包装,80-90℃,30min杀菌,可生产出色泽鲜艳、美味脆嫩的猪毛菜产品。 相似文献
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苦菜罐头生产中若干问题的探讨 总被引:5,自引:0,他引:5
对苦菜罐头生产中易出现的褪色、味咸而不香、杀菌不足的问题进行了探讨。试验证明采用一定浓度的亚硫酸钠、碳酸氢钠溶液对原料进行热烫护色、在汤料中加入一定的糖和香味物质、并降低pH值和高温杀菌,可以制出色泽翠绿、均匀一致、咸淡适口、香味浓郁的苦菜罐头。 相似文献
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为解决热烫预处理易造成淮山罐头汤汁浑浊的问题,提高淮山罐头品质,分析比较热烫处理和以果葡糖浆为渗透液的真空渗透处理、常压渗透处理三种原料预处理方式对淮山罐头品质的影响。结果表明,热烫处理虽然能够钝化多酚氧化酶和过氧化物酶活性,从而起到较好的护色作用,但是会对淮山的表面组织结构造成严重破坏,导致电导率增加,硬度下降达34.80%。常压渗透和真空渗透处理组的淮山,由于糖液的渗入,结构更加致密,在罐头加工前处理时间内,并不会使样品发生明显褐变,对细胞膜的破坏程度均远低于热烫处理。常压渗透5 h和真空渗透3 h、4 h、5 h的淮山硬度均较新鲜淮山有所上升,但抗坏血酸含量明显下降;真空渗透处理组的淮山组织结构更完整,所制成淮山罐头的感官评分高于相同渗透时间的常压渗透处理组和热烫处理组。真空渗透脱水预处理能有效减少淮山罐头浑汤问题,提高罐头品质。 相似文献
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Lixia Wang Xianghua Liu Jingzhen Wang 《International Journal of Food Properties》2017,20(6):1239-1250
Modified yam starch and dual-modified yam starch were produced with propylene oxide, sodium trimetaphosphate and sodium tripolyphosphate. Gelatinization temperature and final viscosity of native yam starch were 79.2 ± 0.4°C and 5702 ± 3 cP. Results showed that the molar substitution and degree of substitution were increased with the volume fraction of propylene oxide from 6–12%, the highest of molar substitution and degree of substitution were 0.0445 ± 0.0003 and 0.0065 ± 0.0006, the final viscosity and setback of dual-modified yam starch were also similar. However, the gelatinization parameters showed an inverse trend. Starch modified with a mixture of sodium trimetaphosphate and sodium tripolyphosphate had higher phosphorus content and increased viscosity compared to starch modified with sodium trimetaphosphate. The peak viscosity of starch modified with propylene oxide was higher than that of native yam starch and the highest was HP12. The granular surface of modified yam starch and dual-modified yam starch appeared significantly embossed and indented, while. Modified yam starch film treated with 12% propylene oxide showed a more homogeneous fractured surface. The tensile strength and elongation at break (E) of starch films were affected by crosslinking reagents and propylene oxide, respectively. The best transparence and E were demonstrated in starch film that was modified with 12% propylene oxide. However, the best tensile strength was demonstrated in starch film that was modified with 8% propylene oxide, sodium trimetaphosphate, and sodium tripolyphosphate. The final viscosity of HP6C1 and HP6C2 was 27 ± 7 and 45 ± 9 cP, which was too low to form film. 相似文献
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山药食醋的开发与研制 总被引:1,自引:1,他引:1
在食醋的生产过程中添加山药作为辅料,研制出一种营养丰富、风味独特的保健醋。简述了其生产工艺、操作要点、产品质量。产品具有浓郁的山药风味及酿造食醋香气,为我国农副产品的深加工开辟一条新的途径。 相似文献