炭黑曲霉在咖啡樱桃上产生赭曲霉毒素A。
Production of ochratoxin A by Aspergillus carbonarius on coffee cherries.
作者信息
Joosten H M, Goetz J, Pittet A, Schellenberg M, Bucheli P
机构信息
Nestle Research Center, Nestec Ltd., Lausanne, Switzerland.
出版信息
Int J Food Microbiol. 2001 Apr 11;65(1-2):39-44. doi: 10.1016/s0168-1605(00)00506-7.
Robusta coffee cherries collected before and during sun drying from two coffee farms in Thailand were examined for moulds producing ochratoxin A (OA). Aspergillus ochraceus was only detected in one sample, whereas Aspergillus carbonarius was isolated from 7 out of 14 samples. On gamma-irradiated coffee cherries, each of the six tested A. carbonarius strains produced OA. More than 4800 microg kg(-1) of toxin were detected under optimal conditions (25 degrees C, a(w) 0.99). OA production was strongly reduced (230 microg kg(-1)) at an a(w) of 0.94.
对泰国两个咖啡种植园在日晒干燥前和干燥过程中采集的罗布斯塔咖啡豆进行了检测，以确定产生赭曲霉毒素A（OA）的霉菌。仅在一个样品中检测到赭曲霉，而从14个样品中的7个分离出了黑曲霉。在经伽马射线辐照的咖啡豆上，六个受试黑曲霉菌株均产生了OA。在最佳条件（25℃，水分活度0.99）下检测到毒素含量超过4800微克/千克。在水分活度为0.94时，OA产量大幅降低（230微克/千克）。
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