壳聚糖、Nisin涂膜在鲢鱼块冷藏保鲜中的应用  

Effect of Chitosan and Nisin Coatings on the Shelf Life of Silver Carp (Hypophthalmichthys Molitrix)

作　　者：张进杰[1,2] 阙婷婷[2] 曹玉敏[2] 徐玉亭[2] 姚燕佳[2] 胡亚芹[2,3] 叶兴乾[2] 

机构地区：[1]宁波大学海洋学院,浙江宁波315211 [2]浙江大学生物系统工程与食品科学学院,杭州3100583 [3]浙江大学馥莉食品研究院,杭州310058

出　　处：《中国食品学报》2013年第8期132-139,共8页Journal of Chinese Institute Of Food Science and Technology

基　　金：国家支撑计划项目(2012BAD38B09);浙江省重大科技专项(2010C12012;2011C11016)

摘　　要：研究壳聚糖、Nisin涂膜处理对冷藏条件下鲢鱼块的保鲜作用。在g℃冷藏条件下，采用C。（空气包装，对照）、Cl（经1％壳聚糖涂膜，空气包装）和C2（1％壳聚糖-0．1％Nisin涂膜，空气包装）3种方法处理样品并贮藏15d，定期检测pH值、挥发性盐基氮（TVB—N值）、K值、脂肪氧化（TBARS值）、菌落总数和感官指标。试验结果显示，贮藏过程中C1和C2处理样品组鲢鱼块的pH值、1TvB—N值、K值、TBARS值、茵落总数均显著（P〈O．05、低于对照组Co。综合感官评定结果：Cl和C2的货架期9～12d，相对于对照组Co样品延长3d左右；相对于C1,Nisin复合壳聚糖涂膜C2对鲢鱼块的保鲜效果稍有提高，但对整个货架期的延长无显著作用（P〈0．05）。This study aimed at determining the effect of chitosan and Nisin coating on shelf-life of silver carp （Hy- pophthalmichthys molitrix） fillets. Silver carp was treated as Co （air packaging, control）, C1 （l%chitosan coating, air packaging） and C2（1% hitosan-0.1% Nisin coating, air packaging）, respectively, and the samples were analyzed periodi- calJy for pH, total volatile base nitrogen（TVB-N）, K value, TBARS, total viable count and sensory evaluation. The re- suits showed that Cl and C2 samples presented a significantly （P〈0.05） lower pH, TVB-N, K value, TBARS value and total viable count than those of the control ones. According to the results of sensory evaluation, the shelf-life of the C1 and C2 samples were about 9-12 days while the control one only 6 days, indicating that chitosan coatings were effective in extending for an additional 3 days the shelf life of the silver carp. Comparing with C1, the samples treated with com- bined chitosan and Nisin presented an indistinctively longer shelf-life than those coated by chitosan only.

关 键 词：鲢鱼 壳聚糖 乳链菌肽 货架期 

分 类 号：TS254.4[轻工技术与工程—水产品加工及贮藏工程]