Abstract:

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.

Key words: Pleurotus eryngii, preservative film, low temperature, storage quality