Bandara J M, Vithanege A K, Bean G A
Department of Agricultural Biology, University of Peradeniya, Peradeniya, Sri Lanka.
Mycopathologia. 1991 Nov;116(2):65-70. doi: 10.1007/BF00436366.
In Sri Lanka, rice is the main staple which is mostly processed into parboiled rice. The levels of aflatoxin B1 (AFB1) and aflatoxin G1 (AFG1) in parboiled and raw milled rice collected from major rice producing areas and rice consuming townships were estimated. In almost all the samples of parboiled rice examined, the AFB1 and AFG1 contents were significantly higher than in raw milled rice. The highest AFB1 content was 185 micrograms/kg and AFG1 content 963 micrograms/kg. These samples were collected from a major rice producing/milling district where the mean relative humidity is 78% and mean annual temperature 27 degrees C which is the highest amongst the rice growing areas in Sri Lanka. Raw rice was either free of aflatoxins or when toxins were detected, they occurred in less than 10% of the samples. The frequency of occurrence of surface fungal flora (Aspergillus/Penicillium) and aflatoxin content in market samples was closely related. Brownish or greenish moldly rice samples with fermented odour contained over 1000 micrograms/kg of AFB1.
在斯里兰卡，大米是主要主食，大多被加工成蒸谷米。对从主要水稻产区和大米消费城镇收集的蒸谷米和糙米中的黄曲霉毒素B1（AFB1）和黄曲霉毒素G1（AFG1）含量进行了估算。在几乎所有检测的蒸谷米样本中，AFB1和AFG1含量均显著高于糙米。AFB1最高含量为185微克/千克，AFG1含量为963微克/千克。这些样本采自一个主要的水稻种植/碾磨区，该地区平均相对湿度为78%，年平均温度为27摄氏度，是斯里兰卡水稻种植区中最高的。糙米要么不含黄曲霉毒素，要么在检测到毒素时，毒素出现在不到10%的样本中。市场样本中表面真菌菌群（曲霉属/青霉属）的出现频率与黄曲霉毒素含量密切相关。带有发酵气味的褐色或绿色发霉大米样本中AFB1含量超过1000微克/千克。
