灌装和包装材料对乌龙茶饮料品质的影响  

Effects of filling and packaging materials on the quality of oolong tea drink

作　　者：耿立波 张丽娜 GENG Libo;ZHANG Lina(Coca-Cola Beverages(Shanghai)Co.,Ltd.,Shanghai 200241,China)

机构地区：[1]可口可乐饮料(上海)有限公司,上海200241

出　　处：《茶叶》2024年第3期156-162,共7页Journal of Tea

摘　　要：本文研究了不同瓶内顶空体积和不同材质PET瓶(材料和用量)对贮藏期乌龙茶饮料的主要品质成分和感官风味的影响,结果表明通过减少瓶内顶空体积、增加PET用量,以及在PET瓶中添加阻隔剂和涂层能有效减少贮藏期乌龙茶饮料中总儿茶素类和茶多酚的降解,而对咖啡碱含量影响不明显。此外,检测了不同PET瓶的氧气透过率(OTR),结果表明改变灌装、包装材料、瓶型和贮藏温度能够改变饮料瓶的OTR值和转移氧含量。研究结果为从灌装和包装角度改善贮藏期茶饮料品质提供参考。The present study was set to investigate the effects of different headspace volume and different PET bottles(materials and weight)on the main quality related components and sensory quality of oolong tea drinks during storage.The results showed that the degradation of total catechins and tea polyphenols in oolong tea drinks during storage could be effectively reduced by relatively low headspace volume,increased bottle PET weight,and addition of barrier agents and coatings in PET bottles,while the impact on caffeine content is not obvious.Besides,testing on the oxygen transmission rate(OTR)of different PET bottles showed that the filling level,packaging material,bottle shape,and storage temperature affected the OTR value and transfer oxygen content of beverage bottles.The results provide reference for improving the quality of tea drinks during storage from the viewpoint of filling and packaging.

关 键 词：乌龙茶饮料 PET材质 OTR 组分变化 货架期品质 

分 类 号：TS275.2[轻工技术与工程—农产品加工及贮藏工程] TS206.4[轻工技术与工程—食品科学与工程]