中国南方果树2025，Vol.54Issue(3)：42-47,6.DOI:10.13938/j.issn.1007-1431.20240212
柠檬形克勒克酵母34-9对衢州椪柑的防腐保鲜效果及相关机制
Effect of Kloeckera apiculata 34-9 on preservation of Ponkan fruits in Quzhou and related mechanisms
摘要
Abstract
Penicillium digitatum is the main pathogen causing decay of citrus fruits and resulting in significant losses of citrus fruits in postharvest storage.To evaluate the practicability of Kloeckera apiculata 34-9 on the storage and preservation of Ponkan in Quzhou,the activity of biocontrol yeast 34-9 in inhibiting P.digitatum was tested,and the activity of defensive enzyme of fruit,the fruit quality during storage were also determined.The results showed that biocontrol yeast 34-9 could significantly delay the disease progression of P.digitorum on citrus fruits by two days compared to the control group.On the fifth day,the lesion diame-ter of biocontrol yeast 34-9 treatment was 3.32 cm smaller than that of the control.Biocontrol yeast 34-9 could significantly en-hance the activities of peroxidase(POD)and polyphenol oxidase(PPO)of citrus fruits.On the third day after inoculation with pathogenic fungi,the POD and PPO activities of the control were 360.0 U/g and 19.5 U/g,respectively,while those of the bio-control yeast 34-9 treatment were 373.7 U/g and 41.0 U/g.The biocontrol yeast 34-9 showed good preservation effect.The weight loss rate of the control group after 90 days of storage was 5.36％,while that of the fruit treated with 34-9 was 4.57％,and the chemical agent treatment was 4.79％.During the storage period of 90 days,compared with control,biocontrol yeast 34-9 treatment increased the soluble solids and decrease the titratable acids of citrus fruits,ultimately resulting in an increase in sugar acid ratio.The new type of preservative for postharvest preservation of citrus fruits could be developed mainly based on biocontrol yeast 34-9.关键词
椪柑/指状青霉/柠檬形克勒克酵母34-9/过氧化物酶/多酚氧化酶Key words
Ponkan/Penicillium digitatum/Kloeckera apiculata 34-9/peroxidase/polyphenol oxidase引用本文复制引用
吴文明,卢永清,龙超安..柠檬形克勒克酵母34-9对衢州椪柑的防腐保鲜效果及相关机制[J].中国南方果树,2025,54(3):42-47,6.基金项目
财政部和农业农村部:国家现代农业产业技术体系项目(CARS-26)资助. （CARS-26）
