Abstract:
【Objective】 To investigate the effects of near freezing temperature and cold chain transportation on storage quality and cell membrane lipid peroxidation of postharvest apricot fruits.
【Methods】 Xinjiang 'Saimaiti apricot' was used as material, the vibration platform and cold storage were used to simulate the vibration environment of near freezing temperature cold chain transportation.The changes of quality and cell membrane lipid peroxidation of apricot fruits during storage after vibration treatment for 8 hours at different transportation temperatures of 1-2℃ (CK
1), 4-6℃ (CK
2) and near freezing temperature (-1.1--1.6℃) were studied.
【Results】 The results showed that the near freezing temperature (-1.1--1.6℃) transportation treatment of apricot fruits effectively slowed down the increase of cell membrane permeability, malondialdehyde content accumulation and hydrogen peroxide (H
2O
2) content, as well as the increase of polyphenol oxidase (PPO), Lipoxygenase (LOX) and catalase (CAT) activities and peroxidase (POD) activities, and delayed the decline of hardness, ascorbic acid and chlorophyll content of apricot fruits.
【Conclusion】 Near freezing temperature cold chain transportation can effectively slow down the oxidative damage, aging and softening of cell membrane lipids in apricot fruits.