光阻隔剂及蒸汽直接式杀菌对PET包装灭菌乳货架期的影响研究  

Effect of Light Barrier and Steam Direct Sterilization on the Shelf Life of PET Packaging Sterilized Milk

作　　者：胡鹏丽 王孟辉[1] 李明奇 钱文涛[1,2] 李洪亮 HU Pengli;WANG Menghui;LI Mingqi;QIAN Wentao;LI Hongliang(Inner Mongolia Mengniu Dairy(Group)Co.,Ltd.,Hohhot 011500,China;Mengniu Hi-Tech Dairy Products(Beijing)Co.,Ltd.,Beijing 101100,China;Mengniu Dairy(Beijing)Co.,Ltd.,Beijing 101100,China)

机构地区：[1]内蒙古蒙牛乳业(集团)股份有限公司,内蒙古呼和浩特011500 [2]蒙牛高科乳制品(北京)有限责任公司,北京101100 [3]蒙牛乳业(北京)有限责任公司,北京101100

出　　处：《食品科技》2023年第10期72-76,共5页Food Science and Technology

基　　金：国家重点研发计划项目(2022YFD1301000)。

摘　　要：牛乳在加工环节和货架期内发生的化学变化会影响产品稳定性和营养价值,通过调整杀菌参数和包装阻隔性能可以减少化学反应。以鲜牛乳为原料,研究不同阻隔剂含量和不同蒸汽直接式杀菌参数对PET包装灭菌乳的影响。随着货架期延长,不同产品的糠氨酸和乳果糖含量均显著增加,α-乳白蛋白和β-乳球蛋白含量均显著减少;在同一杀菌参数下(143℃/4 s)10%阻隔剂的产品在货架期内的化学变化和活性蛋白衰减显著高于13%和16%,而13%和16%无显著差异,在同一阻隔剂下(13%),与143℃/4 s和143℃/3 s相比,148℃/1 s在货架期内产品整体化学变化及活性蛋白保留情况较好。研究表明148℃/1 s和13%PET阻隔剂可以有效减少牛乳中的化学变化。The chemical changes that occur in milk during processing and shelf life can affect product stability and nutritional value.By adjusting sterilization parameters and packaging barrier performance,chemical reactions can be reduced.Using fresh milk as raw material,the effects of different barrier content and steam direct sterilization parameters on PET packaged sterilized milk were studied.As the shelf life prolongs,the levels of furosine and lactulose in different products significantly increase,while the content of α-lactalbumin and β-lactoglobulin significantly decreased;Under the same sterilization parameters(143℃/4 s),the chemical changes and active protein attenuation of products with a 10%barrier agent were significantly higher than those of 13%and 16%during the shelf life,while there was no significant difference between 13%and 16%.Under the same barrier agent(13%),compared with 143 C/4 s and 143℃/3 s,the overall chemical changes and active protein retention of products at 148℃/1 s during the shelf life were better.The results indicate that 148 C/1 s and 13%PET barrier agents can effectively reduce chemical changes in milk.

关 键 词：牛乳 PET 光阻隔剂 蒸汽直接式杀菌 货架期 

分 类 号：TS252.41[轻工技术与工程—农产品加工及贮藏工程]