浙江农业学报

• 食品科学 • 上一篇    下一篇

Nisin和壳聚糖协同乳酸对冷却猪肉保鲜效果的影响

  

  1. (1 浙江工业大学 海洋学院,浙江 杭州310014;2 浙江省农业科学院 食品科学研究所,浙江 杭州 310021)
  • 出版日期:2015-10-25 发布日期:2015-10-20

The effect of nisin and chitosan cooperating with lactic acid on fresh\|keeping of chilled pork#br#

  1. (1 College of Oceanography, Zhejiang University of Technology, Hangzhou 310014, China; 2 Institute of Food Processing, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China)
  • Online:2015-10-25 Published:2015-10-20

摘要: 分别采用006% nisin,006% nisin+05%乳酸,05%壳聚糖,05%壳聚糖+05%乳酸,05%壳聚糖+1%醋酸溶液以及无菌蒸馏水(对照组)浸泡处理冷却猪肉,然后用保鲜膜包裹后4℃储存,定期测定菌落总数、挥发性盐基氮、TBARS值、pH值和a*值,观察其变化规律。结果表明:nisin和壳聚糖分别协同05%乳酸溶液对冷却猪肉进行处理,能使冷却猪肉具有良好的防腐保鲜效果,挥发性盐基氮和脂质氧化上升较慢,对pH值影响较小,同时能使冷却肉a*值降退延迟,nisin或壳聚糖协同乳酸用于冷却猪肉防腐保鲜具有潜在的应用价值。

关键词: nisin, 壳聚糖, 乳酸, 冷却肉

Abstract: Different treating fluids of 006% nisin, 006% nisin+05% lactic acid, 005% chitosan, 05% chitosan+05% lactic acid, 05% chitosan+1% acetic acid solutions and the control were prepared and used to deal with chilled pork. Then, all the treated pork were stored at 4℃, and the total numbers of colony, total volatile basic nitrogen (TVB\|N), TBARS value, pH value and a* value of treated pork with different storage periods were determined. The results showed that the chilled pork processed with nisin or chitosan cooperating with 05% lactic acid had good fresh\|keeping effect, as TVB\|N and lipid oxidation increased slower, the variation of pH value was small, and the a* value drop was delayed after treatment. In conclusion, the present study indicated that nisin or chitosan cooperating with lactic acid had potential application value in chilled pork storage.

Key words: nisin, chitosan, lactic acid, chilled pork