Effects of modified atmosphere packaging on the postharvest quality of mulberry leaf vegetable

Abstract

Fresh mulberry leaf vegetable is nutritive and becoming popular. However, available preservation technologies are deficient. In present work, the effects of two kinds of modified atmosphere packaging on postharvest quality of fresh mulberry leaf vegetable stored at 4 °C were evaluated. The respiration rate of samples in the modified polyethylene packages (MP20) was 12.88–22.65% lower than that in normal polyethylene packaging (CK). The content of total soluble solids, soluble protein, and total polyphenol in MP20 was less changed than that in CK, and the vitamin C retention was higher as well. Moreover, the lignin content in MP20 was lower than that in CK during storage (19.79% vs 13.38% at day 8), and that was significantly positively related to the polyphenol oxidase and peroxidase activities inhibition. Taken together, a packaging with moderate gas permeability (MP20) is suitable for nutrition maintenance and lignification inhibition of fresh mulberry leaf vegetable during cold storage.

Effect of modified atmosphere package on attributes of sweet bamboo shoots after harvest

“…The atmospheric concentrations of O 2 and CO 2 in the package depend largely on the permeability of the packaging bags during storage. The effects of PMAP on the quality changes of different horticultural crops have been widely evaluated, such as Chinese flowering cabbage, mulberry leaves, and pea pods after harvest ( Wang et al., 2020a ; Yang et al., 2022 ; Mou et al., 2023 , Mou et al, 2023 ; Luo et al., 2024 ). All the reported examples indicated that PMAP could efficiently regulated the gas concentrations inside of the packages, which might be induce series of physiological, biochemical, and molecular level regulations to delay the senescence process ( Wang et al., 2020b ; Mou et al., 2023 ).…”

“…The overall visual changes of sweet bamboo shoot (P. elegans) after passive modified atmosphere packaging (MP40) treatments during storage. The quality changes could be efficiently maintained by physical treatments with PMAP in both fruits and vegetables, such as Chinese flowering cabbage (Mou et al, 2023), bell pepper (Frans et al, 2021), and mulberry leaf vegetables (Yang et al, 2022). The treatment of PMAP was shown to modify the headspace gas concentration to further regulate oxidation and a series of physiological and biochemical senescence changes in the samples (Qu et al, 2022).…”

More or Less: Recent Advances in Lignin Accumulation and Regulation in Horticultural Crops

“…With increasing storage time, two types of snow pea underwent enhanced lignin accumulation, and small snow peas were more susceptible to lignification than large sweet broad peas [40]. Lignin accumulation in samples in both modified polyethylene packages and normal polyethylene packaging gradually increased during storage [41]. Over the period of storage, enhanced respiration may require a significant amount of energy consumption, leading to accelerated senescence and the generation of reactive oxygen species, as well as the strengthened lignification process of horticultural products.…”