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Position: Home > Articles > Compound agent coated on Longan fruit surface for freshness keeping Transactions of the Chinese Society of Agricultural Engineering 2006,22 (8) 219-223

龙眼复合涂膜保鲜剂的研究

作  者:
陈绍军;陈明木;陈青青;庞杰
单  位:
福建农林大学食品科学学院
关键词:
龙眼;魔芋葡甘聚糖;复合涂膜;果皮显微结构
摘  要:
选用魔芋葡苷聚糖、壳聚糖、乳化剂等,采用正交设计设立10个试验组,进行涂膜效果试验和龙眼常温保鲜试验,得出最佳的涂膜配方(含抗菌抑霉剂)为:魔芋葡甘聚糖浓度0.2%,壳聚糖0.2%,蔗糖脂肪酸脂0.15%。经过重复性试验,采用该组配方涂膜能有效增加“福眼”在贮藏期间的好果率,在常温下贮藏7d好果率为82%。显微照片显示,复合涂膜能在龙眼果皮形成一层更加致密的白色半透膜,能渗透到龙眼外果皮的微裂孔和维管束中,覆盖龙眼果皮表面的细孔。
译  名:
Compound agent coated on Longan fruit surface for freshness keeping
作  者:
Chen Shaojun,Chen Mingmu,Chen Qingqing,Pang Jie(College of Food Science,Fujian Agriculture and Forestry University,Fuzhou 350002,China)
关键词:
Longan;konjac glucomannan;compound coating;pericarp ultrastructure
摘  要:
Compound freshness keeping coating agent was mainly made of konjac glucomannan,chitosan and emulsifier.In order to investigate the effect of the coating agent on Longan storaged at room temperature,the(optimum) coating prescription(containing a certain restraining mold reagent) was obtained by orthogonal experiment.The concentrations of konjac glucomannan,chitosan and sucrose ester of fatty acid are 0.2%,0.2% and 0.15% respectively.Further experimental results show that such coating agent can effectively enhance the rate of healthy fruit during storage and the rate of Longon healthy fruit is 82% after seven days storage at room temperature.The microscopical photographs indicate that the compound coating agent can form a white compact semi-transparent film on Longan pericarp and then permeate through the micro-hole of external pericarp,which cover the pores on Longan pericarp surface.

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