Zhang Yiqin, Zhang Wanli, Wang Hongxuan, Shu Chang, Chen Luyao, Cao Jiankang, Jiang Weibo
College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
Food Chem. 2023 Jul 15;414:135689. doi: 10.1016/j.foodchem.2023.135689. Epub 2023 Feb 17.
Water loss and microbial infection induced by mechanical injury are the main sources of harvested loss of fruits and vegetables. Plenty studies have shown that regulating phenylpropane-related metabolic pathways can effectively accelerate wound healing. The combination treatment of chlorogenic acid and sodium alginate coating on postharvest wound healing of pear fruit were investigated in this work. The result shows combination treatment reduced weight loss and disease index of the pears, enhanced texture of healing tissues, maintained the integrity of cell membrane system. Moreover, chlorogenic acid increased the content of total phenols and flavonoids, and ultimately leads to the accumulation of suberin poly phenolic (SPP) and lignin around wound cell wall. Activities of phenylalanine metabolism-related enzymes (PAL, C4H, 4CL, CAD, POD and PPO) in wound-healing tissue were enhanced. The contents of major substrates such as trans-cinnamic, p-coumaric, caffeic, and ferulic acids also increased. The presented results suggested that the combination treatment of chlorogenic acid and sodium alginate coating stimulated wound healing in pears by elevating the phenylpropanoid metabolism pathway, so that maintain high postharvest fruit quality.
机械损伤引起的水分流失和微生物感染是果蔬采后损失的主要来源。大量研究表明，调节苯丙烷相关代谢途径可有效加速伤口愈合。本研究考察了绿原酸和海藻酸钠涂膜联合处理对梨果实采后伤口愈合的影响。结果表明，联合处理降低了梨的失重率和病害指数，增强了愈合组织的质地，维持了细胞膜系统的完整性。此外，绿原酸增加了总酚和类黄酮的含量，最终导致伤口细胞壁周围的木栓质多聚酚（SPP）和木质素积累。伤口愈合组织中苯丙氨酸代谢相关酶（PAL、C4H、4CL、CAD、POD和PPO）的活性增强。反式肉桂酸、对香豆酸、咖啡酸和阿魏酸等主要底物的含量也增加。研究结果表明，绿原酸和海藻酸钠涂膜联合处理通过提高苯丙烷代谢途径促进梨果实伤口愈合，从而保持较高的采后果实品质。
