共查询到17条相似文献,搜索用时 93 毫秒
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以壳聚糖、膨润土等为原料,研制出一种果汁澄清剂,并用于澄清苹果果汁。通过试验获得了澄清果汁的最佳条件。 相似文献
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活性炭负载壳聚糖对苹果汁的澄清效果研究 总被引:1,自引:0,他引:1
以透光率为指标,以壳聚糖澄清和活性炭澄清为对照,探讨活性炭负载壳聚糖澄清剂在不同添加量、温度、时间和pH条件下对苹量汁的澄清效果影响,并采用Box-Behnken中心组合设计法进行澄清工艺条件的响应面优化。试验结果表明:经活性炭负载的壳聚糖澄清剂对苹果汁有较好的澄清效果,且明显优于对照组;建立的响应面模型能较好地预测透光率随澄清条件的变化规律,且在最优澄清条件负载澄清剂用量12 g,澄清时间9.6 min,澄清温度55℃,pH 2.56下的透光率为96.47%。 相似文献
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壳聚糖对杨梅果汁的澄清作用 总被引:6,自引:0,他引:6
研究了壳聚糖对杨梅果汁的澄清作用。结果表明壳聚糖是一种有效的果汁澄清剂,当壳聚糖用量为0.4g/L时对杨梅果汁的澄清效果最好,且不影响其营养成分,经处理后的杨梅果汁具有较好的稳定性。 相似文献
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壳聚糖在红葡萄酒澄清中的应用 总被引:7,自引:0,他引:7
壳聚糖是一种无毒、安全的天然高分子阳离子絮凝剂,具有生物降解性、吸附性和吸湿性等作用;可絮凝红葡萄酒中的胶体微粒、螯合金属离子、吸附有机酸类物质,提高酒的澄清度、稳定性,改善酒的口感;且对酒的色度、主要成分影响不大,用量少,作用时间短,稳定期长:是一种理想的葡萄酒澄清剂。最佳用量0.04%,作用温度30℃以内,作用时间2.5h以上。(孙悟) 相似文献
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M. Dueas A. Irastorza A. Munduate J.I. Santos I. Berregi G. del Campo 《Journal of the Institute of Brewing》2002,108(2):243-247
In this study, the effect of two apple juice treatments (clarification with a pectin methylesterase in the presence and absence of sulphiting) on the cidermaking process was investigated. Pre‐fermentative clarification with the pectin methylesterase (Rapidase CPE) slowed the alcoholic fermentation in respect to traditional fermentation, the greatest effect being found for the combination of the enzymatic treatment with sulphur dioxide addition. With this treatment the start of the fermentation was delayed seven days. Enzymatic clarification delayed malolactic fermentation (MLF) and the interaction of both treatments produced a cider in which malolactic fermentation had not occurred. Both treatments ensured that the volatile acid levels during the maturation phase were significantly lower than in the traditional fermentation. Enzymatic clarification led to lower levels of yeasts during the active phase of alcoholic fermentation with respect to the control. When this treatment was combined with sulphiting, a decrease in apiculate yeast numbers during alcoholic fermentation was observed and a better survival of these species was noted after 59 days of fermentation. 相似文献