Investigating the Respiratory and Energy Metabolism Mechanisms behind ε-Poly-L-lysine Chitosan Coating's Improved Preservation Effectiveness on Tremella fuciformis
文献类型： 外文期刊
作者： Sun, Junzheng 1 ; Wei, Yingying 1 ; Li, Longxiang 1 ; Tang, Baosha 1 ; Yang, Yanrong 1 ; Xiao, Zheng 1 ; Chen, Junchen 1 ; Lai, Pufu 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Food Sci & Technol, Fuzhou 350003, Peoples R China
2.Natl R&D Ctr Edible Fungi Proc, Fuzhou 350003, Peoples R China
3.Minist Agr & Rural Affairs, Coconstruct Minist & Prov, Key Lab Subtrop Characterist Fruits Vegetables & E, Fuzhou 350003, Peoples R China
4.Fujian Agr & Forestry Univ, Coll Food Sci, Inst Postharvest Technol Agr Prod, Fuzhou 350002, Peoples R China
5.Fujian Agr & Forestry Univ, Coll Life Sci, Fuzhou 350002, Peoples R China
关键词： epsilon-poly-L-lysine; chitosan; Tremella fuciformis; respiratory metabolism; energy metabolism
期刊名称：FOODS （ 影响因子：5.2； 五年影响因子：5.5 ）
ISSN：
年卷期： 2024 年 13 卷 5 期
页码：
收录情况： SCI
摘要： Freshly harvested Tremella fuciformis contains high water content with an unprotected outer surface and exhibits high respiration rates, which renders it prone to moisture and nutrient loss, leading to decay during storage. Our research utilized epsilon-poly-L-lysine (epsilon-PL) and chitosan as a composite coating preservative on fresh T. fuciformis. The findings revealed that the epsilon-PL + chitosan composite coating preservative effectively delayed the development of diseases and reduced weight loss during storage compared to the control group. Furthermore, this treatment significantly decreased the respiration rate of T. fuciformis and the activity of respiratory metabolism-related enzymes, such as alternative oxidase (AOX), cytochrome c oxidase (CCO), succinic dehydrogenase (SDH), 6-phosphogluconate dehydrogenase, and glucose-6-phosphate dehydrogenase (6-PGDH and G-6-PDH). Additionally, the composite coating preservative also delayed the depletion of ATP and ADP and maintained higher levels of the energy charge while preserving low levels of AMP. It also sustained heightened activities of Mg2+-ATPase, Ca2+-ATPase, and H+-ATPase enzymes. These results demonstrate that utilizing the epsilon-PL + chitosan composite coating preservative can serve as a sufficiently safe and efficient method for prolonging the shelf life of post-harvest fresh T. fuciformis.
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