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1978年秋,都匀市蔬菜公司反映市牛奶场生产的豆腐乳严重霉变,食用者有中毒症状发生。黔南州防疫站与都匀市防疫站做了现场调查,发现都匀市牛奶场环境卫生差,生产用水污染严重,坛子质量不好、封闭不严,不消毒灭菌,长期存放的生产过程有利于霉菌的生长繁殖及产毒。经检查了当年2～6月生产的豆腐乳32坛,未分离出肠道致病菌及黄曲霉素 B_1。
The autumn of 1978, Duyun City, vegetable companies reflect the city of milk production of tofu serious mildew, food poisoning symptoms occur. Qiannan Prefecture epidemic prevention station and Duyun City epidemic prevention station made a field survey found Duyun dairy farm sanitation, water pollution was serious, poor quality jars, closed lax, non-sterile, long-term storage of the production process Is conducive to the growth and reproduction of mold and toxin production. After examining 32 fermented bean curd produced in February and June of that year, no intestinal pathogenic bacteria and aflatoxin B_1 were isolated.