Chen Xue-Mei, Mou Zhen-Liang, Zhao Ya-Ting, Su Xin-Guo, Han Yan-Chao, Chen Hang-Jun, Wei Wei, Shan Wei, Kuang Jian-Fei, Lu Wang-Jin, Chen Jian-Ye
State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Guangdong Vegetables Engineering Research Center/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi 830052, China.
Food Chem X. 2024 Nov 15;24:102006. doi: 10.1016/j.fochx.2024.102006. eCollection 2024 Dec 30.
In this study, the impact of modified atmosphere packaging (MAP) on quality, lignin biosynthesis, reactive oxygen species (ROS) metabolism, and microstructures of stem in Chinese flowering cabbages was investigated. Compared with control, MAP treatment retained higher content of protein, total soluble solid, and vitamin C, while lower weight loss rate, carbon dioxide (CO) production rate, electrolyte leakage, firmness and hollowing of stems. Lignin content in MAP-treated stems was 1.23-fold higher than that of control stems on the twelfth day. Moreover, MAP treatment inhibited the increasing in cell wall thickness by inhibiting activities of lignin biosynthesis-related enzymes. In addition, MAP suppressed ROS contents, while enhanced levels of ascorbic acid and reduced glutathione through promoting activities of antioxidant enzymes. The above results suggest that maintaining stems quality of Chinese flowering cabbages through MAP treatment is related to prevent lignin accumulation around the vascular tissue and enhance antioxidant capacity.
本研究考察了气调包装（MAP）对菜心茎品质、木质素生物合成、活性氧（ROS）代谢及微观结构的影响。与对照相比，MAP处理能保持较高的蛋白质、总可溶性固形物和维生素C含量，同时降低茎的失重率、二氧化碳（CO）产生率、电解质渗漏、硬度和空心化程度。在第12天，MAP处理的茎中木质素含量比对照茎高1.23倍。此外，MAP处理通过抑制木质素生物合成相关酶的活性，抑制了细胞壁厚度的增加。另外，MAP抑制了ROS含量，同时通过促进抗氧化酶的活性提高了抗坏血酸和还原型谷胱甘肽的水平。上述结果表明，通过MAP处理维持菜心茎的品质与防止维管束组织周围木质素积累及增强抗氧化能力有关。
