Mechanism of High-Voltage Electrostatic Field Treatment in Maintaining the Postharvest Quality of Agaricus bisporus
2025
Bing Deng | Chenlin Jia | Wanting Jia | Yunzhi Li | Mingchang Chang | Hongyan Zhang
This study utilized high-voltage electrostatic field (HVEF) treatment combined with cold storage to preserve Agaricus bisporus, characterized by high water content and susceptibility to browning, cap opening, and mechanical injury. Key quality indicators, such as surface and flesh color, weight loss, respiration rate, hardness, and soluble solids, were monitored to determine optimal HVEF intensities. Transcriptomic, physiological, and biochemical analyses were used to reveal the underlying preservation mechanisms. This study demonstrates that high-voltage electrostatic field (HVEF) treatment at 30 kV m&minus:1 combined with cold storage effectively delays browning, weight loss, and respiration rate in A. bisporus while maintaining color, texture, and flavor. Transcriptomic analysis revealed that HVEF modulates key metabolic pathways, including ATP synthesis, fatty acid metabolism, and redox enzyme activity, leading to reduced ATP levels, suppressed respiration, and delayed senescence. Additionally, the treatment enhances antioxidant capacity through increased ascorbic acid (AsA) and glutathione (GSH) levels, while decreasing malondialdehyde (MDA) content and membrane electrical conductivity, thereby preserving membrane integrity. The suppression of polyphenol oxidase (PPO) and peroxidase (POD) activities reduces pigment formation and browning. Furthermore, the active metabolism of osmoprotectants such as proline improves cold resistance. These findings provide a mechanistic basis for HVEF-based preservation strategies for A. bisporus, supporting its application in postharvest technology.
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