Jayaraman P, Kalyanasundaram I
Department of Botany, University of Madras, India.
Mycopathologia. 1990 May;110(2):81-5. doi: 10.1007/BF00446995.
Thirty four samples of rice bran, of which 9 were from raw (untreated) rice (RR) and 25 from parboiled rice (PbR) were collected from commercial rice mills in and around Madras and analysed for storage mycoflora and mycotoxins. Fungi of the Aspergillus flavus group were present in 29 of the 34 samples (8 from RR and 21 from PbR) in quantities ranging from less than 1-432 thousand propagules/g, though not always as the dominant mycoflora. Fungal numbers were usually higher in RR than in PbR samples. Five of the 9 RR samples and 6 of the 25 PbR samples were positive for aflatoxins. Among 29 isolates of A. flavus obtained from the bran samples, 16 isolates -6 from RR bran and 10 from PbR bran - were found to be toxigenic in vitro. Some isolates of A. candidus also seemed to produce aflatoxin and other fluorescent substances.
从马德拉斯及其周边地区的商业碾米厂收集了34份米糠样本，其中9份来自糙米（未处理大米，RR），25份来自蒸谷米（PbR），并对其储存菌群和霉菌毒素进行了分析。黄曲霉组真菌存在于34份样本中的29份（8份来自RR，21份来自PbR）中，数量范围为每克少于1至43.2万个繁殖体，尽管并不总是占主导菌群。RR样本中的真菌数量通常高于PbR样本。9份RR样本中有5份、25份PbR样本中有6份黄曲霉毒素呈阳性。从麸皮样本中获得的29株黄曲霉分离株中，有16株——6株来自RR麸皮，10株来自PbR麸皮——在体外被发现具有产毒能力。一些白曲霉分离株似乎也能产生黄曲霉毒素和其他荧光物质。
