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生防酵母菌结合水溶性壳聚糖涂膜处理对冬枣的冷藏保鲜效果

Yafeng WEI,Qunxia WANG, Aihuan SUN, Yangyang LI, Liping SUN,Dongqi GUO

Chinese Journal of Biological Control(2015)

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Abstract
以水溶性壳聚糖作为美极梅奇酵母菌的载体,制备出一种复合涂膜剂,用于冬枣的涂膜保鲜,通过测定贮藏期冬枣的腐烂率、失重率、硬度、可溶性固形物含量、可滴定酸含量、维生素C (VC)含量的变化,评价该生物涂膜剂的保鲜效果.结果表明,0.1%(w/v)水溶性壳聚糖能增强美极梅奇酵母菌在冬枣表面的定殖能力.在50d时,复合涂膜处理效果较佳,冬枣的腐烂率最低,为19%,冬枣贮存性能好,硬度为11.3 kg/cm2,可溶性固形物含量为19%,可滴定酸含量为0.55%,冬枣营养成分损失较少,其VC含量为250 mg/100 9.复合涂膜处理冬枣可延缓果实衰老,明显延长其贮藏期.
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