Mahmoud A L
Botany Department, Faculty of Science, Assiut University, Egypt.
J Basic Microbiol. 1993;33(2):101-4. doi: 10.1002/jobm.3620330205.
Fifty isolates of Aspergillus flavus as well as 25 isolates of each of A. fumigatus, A. ochraceus, A. terreus and Fusarium spp. isolated from poultry feeds were screened for toxin production. Of these isolates, 20% have been detected to exhibit toxigenic activity. The mycotoxin content was determined in samples of grind maize, cotton-seed cake, fish meal, wheat bran and soybean meal. 80% of maize samples were highly contaminated with aflatoxins (480 micrograms/kg) and zearalenone (40 micrograms/kg). Aflatoxins B1 and B2 were found in 50 and 30% of cotton-seed cake and fish meal, respectively. With wheat bran, 40% of the samples contained aflatoxin B1 and zearalenone. Soybean meal appeared to be a poor substrate for mycotoxin formation.
对从家禽饲料中分离出的50株黄曲霉以及烟曲霉、赭曲霉、土曲霉和镰刀菌属各25株菌株进行了毒素产生情况的筛选。在这些分离菌株中，已检测到20%表现出产毒活性。对磨碎的玉米、棉籽饼、鱼粉、麦麸和豆粕样本中的霉菌毒素含量进行了测定。80%的玉米样本被黄曲霉毒素（480微克/千克）和玉米赤霉烯酮（40微克/千克）高度污染。黄曲霉毒素B1和B2分别在50%的棉籽饼和30%的鱼粉中被发现。在麦麸中，40%的样本含有黄曲霉毒素B1和玉米赤霉烯酮。豆粕似乎是霉菌毒素形成的不良底物。
