摘要
为了寻求天然、安全、效果良好的冷却猪肉保鲜剂,本试验筛选了乳酸菌肽、茶多酚、壳聚糖三种天然保鲜剂,用浸泡的方式对肉块进行处理,结合真空包装技术对冷却肉的保鲜效果进行研究,并测定菌落总数、TVB-N值和pH值指标。主要以TVB-N值来判定冷却肉最终新鲜度。结果表明:3种天然保鲜剂单独使用都有一定的保鲜效果,复合试验中对照组的保质期仅为7d,壳聚糖、Nisin复合组和壳聚糖、茶多酚、Nisni复合组均可使冷却肉的保质期达到15d以上,后者对冷却肉的保鲜效果明显优于其它组,可使保质期达到21d以上。
For searching a natural, safe and available fresh-keeping agent of chilled-pork, this article selected three natural materials： tea polyphenols, Nisin and chitosan to make a natural fresh-keeping film, together with the vacuum packaging technique to carry out a research on preserveing freshness of chilled-pork. The indexes of the chilled-pork, such as coloby count, pH and TVB-N were assayed. Mainly, by means of TVB-N the final fresh degree was judged and fixed. The results showed： when the three fresh-keeping agents were single used, they all had a certain fresh-keeping effect. When they were mixed together, in group 3 and group 5 of the experiment, the validity of the cooled pork was over 15d, in comparison with 7d for control. Meanwhile, the validity of the cooled pork in group 5 was 21d, much longer than any other groups evidently
出处
《食品研究与开发》
CAS
北大核心
2005年第4期150-153,共4页
Food Research and Development
关键词
冷却猪肉
保鲜技术
茶多酚
乳酸菌肽
壳聚糖
chilled pork
fresh-keeping of pork
tea polyphenols
Nisin
chitosan
