Experimental Teaching Center, Shenyang Normal University, Shenyang, Liaoning 110034, People's Republic of China.
Logistics Management Office, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, People's Republic of China.
Food Chem. 2019 Aug 1;288:201-207. doi: 10.1016/j.foodchem.2019.03.024. Epub 2019 Mar 9.
The objective of the present study was to investigate the effectiveness of lysozyme coatings and 1-MCP on storage and preservation of kiwifruit stored at 4 ± 1 °C and 90-95% RH for 20 d. Ethylene production, respiratory rate, decay incidence, weight loss, firmness, chlorophyll, soluble solid, titratable acid, ascorbic acid, total bacterial count, ascorbate peroxidase (APX), superoxide dismutase (SOD) and catalase (CAT) activity of treated kiwifruit were examined. The results showed that lysozyme coatings or 1-MCP treatment inhibited ethylene production and respiratory rate, delayed the increase of decay incidence, weight loss, soluble solid and total bacterial count, improved firmness, chlorophyll, titratable acid, ascorbic acid content, APX, SOD and CAT activity during the storage compared with the untreated kiwifruit in different degree. Moreover, the combined effect of lysozyme coatings and 1-MCP was more excellent than that of lysozyme coatings or 1-MCP alone. In conclusion, our present results indicated that the combined treatment of lysozyme coatings and 1-MCP may be an efficient way to improve the postharvest quality and prolong the shelf life of kiwifruit.
本研究旨在探讨溶菌酶涂层和 1-MCP 对猕猴桃在 4±1°C 和 90-95%相对湿度下贮藏 20 天的贮藏保鲜效果。研究了处理猕猴桃的乙烯生成、呼吸速率、腐烂发生率、失重、硬度、叶绿素、可溶性固形物、可滴定酸、抗坏血酸、总细菌计数、抗坏血酸过氧化物酶 (APX)、超氧化物歧化酶 (SOD) 和过氧化氢酶 (CAT) 活性。结果表明，与未处理的猕猴桃相比，溶菌酶涂层或 1-MCP 处理在不同程度上抑制了乙烯生成和呼吸速率，延缓了腐烂发生率、失重、可溶性固形物和总细菌计数的增加，提高了硬度、叶绿素、可滴定酸、抗坏血酸含量、APX、SOD 和 CAT 活性。此外，溶菌酶涂层和 1-MCP 的联合作用优于单独使用溶菌酶涂层或 1-MCP。综上所述，本研究结果表明，溶菌酶涂层和 1-MCP 的联合处理可能是提高猕猴桃采后品质和延长货架期的有效方法。
