食品科学 ›› 2013, Vol. 34 ›› Issue (8): 279-283.doi: 10.7506/spkx1002-6630-201308060

• 包装贮运 • 上一篇    下一篇

壳聚糖复合保鲜剂涂膜与MAP保鲜“妃子笑”荔枝

杨胜平,谢 晶,钱韻芳,李念文,周 然   

  1. 上海海洋大学食品学院,上海 201306
  • 收稿日期:2012-02-13 修回日期:2013-03-14 出版日期:2013-04-25 发布日期:2013-05-07
  • 通讯作者: 谢晶 E-mail:jxie@shou.edu.cn
  • 基金资助:
    2011年度上海市农业科技成果转化资金项目(113919N0700)

Preservation of Litchi with Composite Chitosan Coating and Modified Atmosphere Packaging

YANG Sheng-ping,XIE Jing*,QIAN Yun-fang,LI Nian-wen,ZHOU Ran   

  1. College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
  • Received:2012-02-13 Revised:2013-03-14 Online:2013-04-25 Published:2013-05-07
  • Supported by:
    Agricultural Funding on Achievements Tranformation of Shanghai

摘要: 为了探讨壳聚糖复合保鲜剂涂膜、气调包装以及保鲜剂涂膜结合气调包装对“妃子笑”荔枝保鲜效果的影响。分别以质量分数为1.5%壳聚糖+1.0%没食子酸+4.0%柠檬酸+0.1% CaCl2保鲜液处理(涂膜),用气体体积比例为5% CO2+5% O2+90% N2气调包装(MAP)以及保鲜剂涂膜结合MAP处理保鲜“妃子笑”荔枝,以不做处理组为对照,在相对湿度80%、温度(4±1)℃冷藏条件下贮藏。以好果率、褐变率,果皮中花色素苷含量、果皮含水率、色差值和果肉中VC、可溶性固形物、可滴定酸含量为指标进行研究。结果表明,壳聚糖复合保鲜剂一定程度上延长了“妃子笑”荔枝保鲜期,保鲜剂涂膜结合气调包装保鲜荔枝效果不及单独使用气调包装,但优于单独使用壳聚糖保鲜剂涂膜处理。用体积分数5% CO2、5% O2、90% N2进行气调包装的“妃子笑”荔枝,在(4±1)℃冷藏条件下贮藏42d,商品好果率达到90%以上,褐变指数为1.52,且能较好地维持荔枝原有的色泽品质,具有良好的商品价值。

关键词: 壳聚糖, 复合保鲜剂, 气调包装, “妃子笑”荔枝, 保鲜

Abstract: Effects of three different postharvest treatments including compound coating antistaling of chitosan, modified atmosphere packaging (MAP) and their combined treatment on shelf-life of Feizixiao litchi were investigated. The coating solution in this study was composed of 1.5% chitosan + 1.0% gallic acid + 4.0% citric acid + 0.1% CaCl2. The modified atmosphere was a gas mixture of 5% CO2 + 5% O2 + 90% N2. All fruit samples treated by coating or MAP or coating with MAP were stored at (4±1)℃ with the humidity of 80%. The general quality indexes (good fruit rate and browning index) of litchi fruit, the evaluation indicators of pericarp (anthocyanin content, moisture content and color), and the quality indexes of litchi pulp (vitamin C content , soluble solid content, titratable acidity and sugar acid ratio) were used to evaluate the quality of litchi. The results showed that both the stand-alone treatment of coating and MAP could extend the preservation time of litchi. However, the results of the combined treatment could not indicate a synergic effect from two treatments. The shelf-life of litchi packaged in MAP (5% CO2 + 5% O2 + 90% N2) was the longest (42 days) among these groups, and the health fruit rate was more than 90% with a browning index of 1.52.

Key words: chitosan, compound coating anti-staling, MAP, Feizixiao litchi, preservation

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