不同包装膜对杏鲍菇冷藏品质和贮藏效果的影响

比较5种不同包装膜对杏鲍菇冷藏品质及理化特性的影响,以确定最适杏鲍菇冷藏的包装膜。结果表明,在4℃贮藏条件下,各种保鲜膜均不同程度地保持了杏鲍菇冷藏期间的感官品质,降低了杏鲍菇贮藏期间多酚氧化酶活性和丙二醛含量,延缓了可溶性蛋白、VC和可溶性总糖含量下降,同时保持较高的超氧化物歧化酶活性、过氧化氢酶活性和过氧化物酶活性,其中以高压低密度聚乙烯(low density polyethylene,LDPE)效果最佳。因此,LDPE能够有效抑制贮藏期间杏鲍菇品质劣变,降低营养价值的损失,提高综合贮藏品质,延长货架期时间至15 d,为薄膜包装杏鲍菇应用提供参考,并为商业延长杏鲍菇的贮藏期限提供理论依据。

Effect of Different Preservative Films on the Storage Quality of Pleurotus eryngii at Low Temperature

The aim of the present work was to compare the effects of five kinds of preservative films on the storage quality
and physicochemical properties of Pleurotus eryngii at low temperature in order to find the most appropriate one to maintain
its quality. The results showed that all the preservative films investigated could maintain the sensory quality of Pleurotus
eryngii stored at 4 ℃ to different extents, reduced malondialdehyde (MDA) concentration and polyphenol oxidase (PPO)
activity, retained higher contents of soluble protein, VC and polysaccharide, and maintained high superoxide dismutase
(SOD), catalase (CAT) and peroxidase (POD) activity, with low density polyethylene (LDPE) identified as the best one.
Therefore, LDPE could inhibit the quality deterioration of Pleurotus eryngii during storage, reduce the loss of nutritional
value, improve the overall storage quality, and extend the shelf life to 15 days. This study may provide a reference for the
application of film packaging, and a theoretical basis for prolonging the shelf life of Pleurotus eryngii.