文章摘要
张晓云;顾香玉;赵利娜;郑香峰;杨红娟;李军;张红印;.解脂亚罗酵母Y-2对葡萄采后病害及赭曲霉毒素A的控制作用[J].中国食品学报,2020,20(8):201-206
解脂亚罗酵母Y-2对葡萄采后病害及赭曲霉毒素A的控制作用
Biocontrol of Postharvest Disease of Grapes and OTA Accumulation by Yarrowia lipolytica Y-2
  
DOI:
中文关键词: 解脂亚罗酵母  采后病害  赭曲霉毒素A  生物控制
英文关键词: Yarrowia lipolytica  postharvest disease  ochratoxin A  biocontrol
基金项目:国家自然科学基金项目(31701971,31772369);江苏省环洪泽湖生态农业生物技术重点实验室项目(hzhlab1703)
作者单位
张晓云;顾香玉;赵利娜;郑香峰;杨红娟;李军;张红印; 江苏大学食品与生物工程学院
江苏科技大学粮食学院
 
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中文摘要:
      解脂亚罗酵母Y-2是在本实验室筛选的1株能够在体外降解赭曲霉毒素A(OTA)的酵母菌。本文研究其对不同品种葡萄由微皱篮状菌O1引起的采后病害及OTA积累的控制作用。不同浓度解脂亚罗酵母Y-2对红提葡萄采后病害和OTA积累的控制作用以及葡萄贮藏期间其对采后病害和OTA积累的控制作用。研究结果表明,解脂亚罗酵母Y-2对不同品种葡萄由微皱篮状菌O1引起的采后病害均有显著的控制效果,能显著降低红提葡萄伤口处OTA的积累。与对照相比,解脂亚罗酵母Y-2处理的夏黑、巨峰和红提葡萄的腐烂直径分别降低了28.7%,19.7%和18.5%,红提葡萄伤口处OTA的积累量降低了83.3%。随着酵母浓度的升高,解脂亚罗酵母Y-2对红提葡萄采后病害和OTA的控制效果增强,当酵母浓度为1×10~8细胞/mL时,腐烂直径降低了23.8%,OTA积累量由50 ng/伤口,降到5.95 ng/伤口。在整个贮藏过程中,解脂亚罗酵母Y-2对红提葡萄采后病害和OTA的积累均有显著的控制效果。
英文摘要:
      Yarrowia lipolytica Y-2 screened by our laboratory is a strain with the ability of degrading OTA in vitro. The main purposes of this study was to investigate the control of postharvest disease of different varieties of grapes caused by Talaromyces rugulosus O1 and OTA accumulation by Y. lipolytica Y-2, the control of postharvest disease of Red Globe grapes and OTA accumulation by Y. lipolytica Y-2 at different concentrations, as well as the control of postharvest disease of Red Globe grapes and OTA accumulation during the entire storage period. The results indicated that Y. lipolytica Y-2 showed significant biocontrol activity for postharvest disease of different varieties of grapes and OTA accumulation. Compared with the control, the lesion diameters of Summer grapes, Huge Peak grapes and Red Globe grapes treated with Y. lipolytica Y-2 were decreased by 28.7%, 19.7% and 18.5%, respectively, and OTA accumulation in the wound of Huge Peak grapes was decreased by 83.3%. The biocontrol efficacy was enhanced as the increase of the concentration of Y. lipolytica Y-2. In comparison with the control, the lesion diameter of Red Globe grapes treated with Y. lipolytica Y-2 at concentration of 1 × 108 cells/mL decreased by 23.8%, while OTA accumulation decreased from 50 ng/wound to 5.95 ng/wound. Y. lipolytica Y-2 showed significant biocontrol activity for the postharvest disease of Red Globe grapes and OTA accumulation during the entire storage period.
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