壳聚糖对黄瓜保鲜作用的研究

目的]为黄瓜保鲜寻求一种较好的生物保鲜方法。方法]研究不同浓度壳聚糖涂膜处理对黄瓜采后生理及保鲜效果的影响。结果]在整个储藏期间,用不同浓度壳聚糖处理后的黄瓜,与对照相比,有机酸、叶绿素、可溶性糖及Vc含量都极显著增加,失重率极显著降低。其中,用1.0%壳聚糖溶液对黄瓜进行涂膜后的保鲜效果最好,储藏第4天与对照相比,黄瓜的有机酸、叶绿素、可溶性糖及Vc含量分别提高了48.7%、43.0%、23.9%、37.6%,第8天分别提高了76.9%、58.5%、75.0%、103.9%,第12天分别提高了111.8%、92.8%、290.3%、246.5%,而失重率在第4、8、、12天分别下降了63.8%、63.4%、63.2%。同时使黄瓜仍保持良好的感官情况。结论]壳聚糖是黄瓜安全、有效的生物保鲜剂。

Study on Preservation Effect of Chitosan on Cucumber

Objective] The aim of the study was to seek a good biological preservation method of cucumber.Method]The changes of postharvest physiology and sensory qualities were investigated to evaluate the preservation effect of chitosan on cucumber.Result]During the period of storage,compared with the control,the organic acid contents,Vc contents,chlorophyll contents,soluble sugar contents were significantly increased and the weight losses significantly decreased.The differences between the different chitosan conc...