Abstract
A low-temperature plasma (LTP) modified film, loaded with cinnamon essential oil (CEO) in mesoporous silica nanoparticles (Santa Barbara Amorphous-15) (SBA-15), was prepared. This LTP/CEO/SBA-15 potato starch film's effect on the phenylpropane metabolic pathway of postharvest Agaricus bisporus was evaluated at 4 ± ± 1 °C. Results showed that the film maintained mushrooms' whiteness, water content, and hardness while reducing its relative conductivity, respiration rate, and malondialdehyde content. Film-packed mushrooms retained higher key enzyme activity of the phenylpropane metabolic pathway, especially LTP/CEO/SBA-15 potato starch film-packaged mushrooms with the highest enzyme activities during storage. Metabolites followed a similar trend, with the LTP/CEO/SBA-15 potato starch film-packaged mushrooms consistently having the highest total phenols, flavonoids, and lignin contents among treatment groups during storage. Additionally, gallic acid, p-coumaric acid, caffeic acid, protocatechuic acid, p-hydroxybenzoic acid, and cinnamic acid contents were the highest in LTP/CEO/SBA-15 starch film-packaged mushrooms. Therefore, the results indicate that the LTP/CEO/SBA-15 active film shows promise in maintaining postharvest mushroom quality.
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