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The Effect of Chitosan Coating on Sugarcanes after Fresh-cut
Author(s): SHI Gui-yu, CHEN Ming-mei
Pages: 67-
69
Year: 2008
Issue:
1
Journal: GUANGXI SCIENCES
Keyword: 保鲜; 果蔗; 壳聚糖; 生理;
Abstract: 选择广西桂林市临桂的"拨地拉"紫皮果蔗(Saccharum sinensis Roxb.),用1.5%壳聚糖(1号)和2%硼酸+4%硼砂+0.1%维生素C+1.5%壳聚糖(2号)两种处理液进行涂膜保鲜处理,并与对照(清水)进行比较,测定超氧物歧化酶(SOD)、过氧化氢酶(CAT)、过氧化物酶(POD)、多酚氧化酶(PPO)、丙二醛(MDA)含量、可溶性总糖和蔗糖含量变化,探讨壳聚糖对果蔗的保鲜效果和相关生理生化的影响.结果表明,果蔗鲜切处理后随着贮藏期的延长,蔗糖、可溶性总糖含量均呈下降趋势,贮藏期愈长,下降愈多,但是壳聚糖保鲜处理下降比对照缓慢.壳聚糖处理延缓PPO、POD活性和MDA含量增加,保持较高水平的SOD、CAT活性,从而可以减少酶促褐变发生,保持果蔗品质,延长果蔗的贮藏期.
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