Influence of Different Spontaneous Modified Atmosphere Packaging on Postharvest Storage Quality of Crystal Grapes Based on Principal Component and Correlation Analysis
This study employed different spontaneous modified atmosphere packaging(MAP)for crystal grapes,storing them at a temperature of(1±0.3)℃ for 40 days,to explore the effects of various MAPs on the appearance quality and physiological and biochemical characteristics of crystal grapes during storage.The results indicated that,at the end of storage,the fruit rot rate,browning rate,and firmness in the PE20 group were 0.69 times,0.67 times,and 1.17 times,respectively,of those in the microporous group.This effectively inhibited the increase in rot rate,browning rate,and respiration intensity of crystal grapes,maintained a higher fruit firmness,and reduced the consumption of respiratory substrates.Moreover,by inhibiting the activity of oxidative enzymes such as polyphenol oxidase(PPO)and lipoxygenase(LOX),and the accumulation of malondialdehyde(MDA),maintained higher levels of ascorbic acid(AsA),total phenols,and flavonoids,the PE20 packing,enhanced the antioxidant activity,scavenged reactive oxygen species(ROS)in fruit tissues,thereby mitigating cellular oxidative damage and oxidation of phenolic substances.Additionally,the study identified respiration intensity,browning rate,and firmness as key factors in the post-harvest quality deterioration of crystal grapes.Through principal component analysis,it was found that the PE20 group scored the highest in comprehensive evaluation during the storage of crystal grapes,demonstrating significant benefits to the post-harvest storage quality of crystal grapes.
万方数据
维普
