壳聚糖复合膜对冷却肉保水性的影响  

Effects of multiple chitosan coating on water holding capacity of chilled pork

作　　者：高晓平[1] 赵改名[1] 李家乐[1] 李苗云[1] 孙灵霞[1] 张秋会[1] 柳艳霞[1] 黄现青[1] 

机构地区：[1]河南农业大学食品科学技术学院,河南郑州450002

出　　处：《河南农业大学学报》2010年第3期326-329,共4页Journal of Henan Agricultural University

基　　金：国家科技计划项目(2009GJD00047);河南省教育厅自然科学研究计划项目(2008A550004)

摘　　要：以猪背最长肌为原料,以滴水损失、贮存损失、水分含量等为评价指标,研究贮藏温度为4℃时不同配方壳聚糖涂膜液对冷却肉保水性的影响.结果表明,各种配方壳聚糖涂膜液处理均可降低冷却肉的滴水损失和贮存损失,减缓水分含量下降速率.0.9%壳聚糖、0.6%山梨酸钾、0.25%N isin溶于0.5%醋酸制成的涂膜液显示了较好的保水性能,用其处理的冷却肉滴水损失为0.823%,贮存损失为5.885%,分别比对照组减少了46%和14%.The effects of different multiple coating films on water holding capacity of chilled pork were studied during storage under 4℃.Pork M.longissimus dorsi was used as materials.Drip loss,purge loss and moisture content were used as indicators.The results showed that during cold storage multiple chitosan coating could decrease the drip loss and purge loss of pork and slow the drop rate of moisture content.The multiple coating film,composed of 0.9% chitosan,0.6% Potassium sorbate,0.25% Nisin and 0.5% acetate acid,displayed the best WHC.The drip loss and purge loss of the pork treated with it were 0.823% and 5.885% respectively,decreasing by 46% and 14% compared with the control group.

关 键 词：壳聚糖 保水性 贮存损失 滴水损失 

分 类 号：TS205[轻工技术与工程—食品科学]