食品科学 ›› 2017, Vol. 38 ›› Issue (23): 243-248.doi: 10.7506/spkx1002-6630-201723039

• 包装贮运 • 上一篇    下一篇

基于玫瑰茄花青素的猪肉新鲜度智能指示膜研究

邹小波,张俊俊,石吉勇,蒋彩萍,翟晓东,王 圣,赵 号,梁妮妮   

  1. 江苏大学食品与生物工程学院,农产品加工及贮藏工程实验室,江苏 镇江 212013
  • 出版日期:2017-12-15 发布日期:2017-12-07
  • 基金资助:
    “十二五”国家科技支撑计划项目(2015BAD17B04);“十三五”国家重点研发计划重点专项(2016YFD0401104); 国家自然科学基金面上项目(31671844);国家自然科学基金青年科学基金项目(31601543); 中国博士后科学基金项目(2014T70483;2016M590422;2017T100334); 江苏省自然科学基金项目(BK20160506;BE2016306);江苏省国际科技合作项目(BZ2016013); 苏州科技发展项目(SNG201503);江苏省高校优势学科建设工程资助项目(PAPD); 江苏省研究生科研创新计划项目(KYCX17_1798);江苏省大学生创新创业训练计划项目(5551360009;5551360022)

Development of Intelligent Indicator Films Based on Roselle Anthocyanins for Monitoring Pork Freshness

ZOU Xiaobo, ZHANG Junjun, SHI Jiyong, JIANG Caiping, ZHAI Xiaodong, WANG Sheng, ZHAO Hao, LIANG Nini   

  1. Agricultural Product Processing and Storage Laboratory, School of Food and Biological Engineering, Jiangsu University,Zhenjiang 212013, China
  • Online:2017-12-15 Published:2017-12-07

摘要: 本研究以玫瑰茄花青素提取物制备可检测肉类新鲜度的智能指示膜,分别以淀粉、壳聚糖和聚乙烯醇两两 混合作为成膜基底材料,比较分析了不同基底材料复合膜在机械性能、水溶性、微观结构以及颜色稳定性等方面的 差异。结果表明:壳聚糖/聚乙烯醇/玫瑰茄花青素复合膜的抗拉强度最大,为98.28 MPa;聚乙烯醇/淀粉/玫瑰茄花 青素复合膜的断裂伸长率最大,为88.16%,含水率最低且稳定性最高;扫描电子显微镜结果表明不同基底材料复合 膜的微观结构差异较大。将聚乙烯醇/淀粉/玫瑰茄花青素复合膜用于猪肉新鲜度的检测,结果表明:在25 ℃贮藏环 境下,随着时间延长,猪肉的挥发性盐基氮的含量不断上升,36 h后,猪肉的挥发性盐基氮值大于15 mg/100 g,表 明猪肉已经腐败,同时复合膜的颜色变成淡紫色,60 h后变为褐色。研究结果可为猪肉新鲜度智能指示膜的研究开 发提供参考。

关键词: 指示膜, 猪肉, 新鲜度, 玫瑰茄花青素, 淀粉, 壳聚糖, 聚乙烯醇

Abstract: Intelligent indicator films based on natural anthocyanins from roselle were developed for real-time monitoring of pork freshness. Three kinds of composite films were prepared by using binary combinations of starch, chitosan and polyvinyl alcohol as the solid substrate. The mechanical properties, water content, microstructure and color stability of the composite films were characterized and compared. The results showed that the chitosan/polyvinyl alcohol/roselle anthocyanins composite film had the highest tensile strength (98.28 MPa), and the starch/polyvinyl alcohol/roselle anthocyanins (SPR) composite film had the highest elongation at break (88.16%), lowest water content and greatest color stability. Scanning electron microscopic photographs showed that the composite films had different microstructures. Finally, the SPR film was selected to indicate the freshness of pork stored at 25 ℃. Total volatile basic nitrogen (TVB-N) value of pork samples increased over time. In particular at 36 h, the TVB-N value was higher than 15 mg/100 g, indicating the occurrence of pork spoilage. Accordingly, the color of the SPR composite film changed into mauve and eventually into brown (at 60 h) with the increase of TVB-N. Overall, these results can help develop intelligent indicator films for monitoring pork freshness.

Key words: indicator films, pork, freshness, roselle anthocyanins, starch, chitosan, polyvinyl alcohol

中图分类号: