摘要
该文比较1-甲基环丙烯(1-methylcyclopropene,1-MCP)和硝普钠(sodium nitroprusside,SNP)对冷藏番荔枝贮藏品质的影响。以大目番荔枝为试材,研究1-MCP和SNP两种处理对采后番荔枝呼吸速率、硬度、失重率、木质素及相关酶活的影响。结果表明,与对照相比,1-MCP和SNP处理均显著降低了果实的呼吸强度,维持较高的果实硬度、可溶性蛋白及糖含量,减少质量损失,降低多酚和类黄酮含量,抑制苯丙氨酸解氨酶(phenylalanine ammonia-lyase,PAL)和多酚氧化酶(polyphenol oxidase,PPO)活性,过氧化物酶(peroxidase,POD)活性无显著变化,超氧化物歧化酶(superoxide dismutase,SOD)活性增加。1-MCP和SNP处理均能有效抑制采后番荔枝果实呼吸代谢,显著延缓其木质化劣变进程,这为研究热带园艺产品保鲜机制提供参考,也为建立和完善热带优稀水果保鲜体系提供理论支持。
The effects of 1-methylcyclopropene(1-MCP)and sodium nitroprusside(SNP)on the storage quality of Annona squamosa L.were investigated.The changes of respiratory rate,physical properties(firmness and fruit weight loss),lignin content and related enzyme activities of Annona squamosa L.fruit(Damu)were analyzed.The results showed that both 1-MCP and SNP treatments could reduce the respiration rate,weight loss,polyphenol and flavonoid contents of fruits,retaining high firmness,soluble protein and sugar contents.The enzyme activities related to lignin synthesis such as phenylalanine ammonia-lyase(PAL)and polyphenol oxidase(PPO)were inhibited.Moreover,no significant change in peroxidase(POD)activity was observed,while the superoxide dismutase(SOD)activity increased.Generally,both of 1-MCP and SNP treatment could effectively inhibit the respiratory metabolism of postharvest Annona squamosa L.fruit and significantly delay its lignification process.The result provides a reference for preservation mechanism of tropical horticultural products and also a theoretical support for the establishment and improvement of preservation system of rare fruits in tropical areas.
作者
齐宁利
程志华
龚霄
杨涛华
静玮
周伟
李积华
QI Ningli;CHENG Zhihua;GONG Xiao;YANG Taohua;JING Wei;ZHOU Wei;LI Jihua(Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs,Agricultural Products Processing Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang 524001,China;School of Food Science and Technology,Huazhong Agricultural University,Wuhan 430070,China;Hainan Key Laboratory of Storage&Processing of Fruits and Vegetables,Zhanjiang 524001,China)
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2019年第22期233-239,共7页
Food and Fermentation Industries
基金
海南省自然科学基金项目(318QN260,219QN291)
中国热带农业科学院基本科研业务费专项资金(16301220170 14)
广东省现代农业产业技术体系创新团队建设项目(2018 LM1145)
