川陈皮素-羧甲基纤维素钠复合涂膜对黄瓜保鲜效果的影响

以"绿箭一号"黄瓜为试材,研究了不同质量分数的川陈皮素-羧甲基纤维素钠复合涂膜材料对黄瓜的保鲜效果,以期在贮藏过程中减少其营养物质的损失。结果表明:与对照(蒸馏水)组相比,川陈皮素-羧甲基纤维素钠复合涂膜材料能有效降低黄瓜的失重率,减慢了黄瓜水分的散失;延缓了黄瓜中叶绿素的分解;减少了黄瓜中维生素C、可溶性固形物的分解及丙二醛(MDA)的累积,并降低了多酚氧化酶(PPO)活性。当川陈皮素添加量为2 g·L-1时,黄瓜有较佳的保鲜效果,可将其贮藏期延长至18 d,该研究可为黄瓜的贮藏保鲜方法提供参考依据。

Effect of Nobiletin-Carboxymethyl Cellulose Composite Coating on Fresh Preservation of Cucumber

‘Lyu Jian No.1’ cucumber was used as test material to study the fresh-keeping effect of different mass fractions of nobiletin-sodium carboxymethyl cellulose composite coating material on cucumber,in order to reduce the loss of nutrients during storage.The results showed that compared with the control group(distilled water),the compound coating material of nobiletin-sodium carboxymethyl cellulose could effectively reduce the weight loss rate of cucumber,low the loss of moisture in cucumber,delay the decomposition of chlorophyll in cucumber,reduce the decomposition of vitamin C,soluble solids and the accumulation of malondialdehyde(MDA)and reduce the activity of polyphenol oxidase(PPO).The cucumber had better fresh-keeping effect when the content of nobiletin was 2 g·L-1.The storage period of cucumber could be extended to 18 days,which could provide a reference for cucumber fresh-keeping methods.