中文摘要：花生荚果易感染土壤中产黄曲霉毒素的曲霉菌。为了评估不同花生田土壤中的产毒曲霉，从中国四个农业生态区（东南沿海(SEC)、长江流域（YZR）、黄河流域（YR）及东北地区(NE)）采集的600份土壤样品中分离到344个产毒菌株。研究发现YZR花生AFB₁污染的风险最高，因其1g土壤中产毒菌含量最高，其次是SEC和YR，NE最低。潜在AFB₁污染的风险随土壤中产毒菌的数量及阳性率的增加而升高，表明减少土壤中的产毒菌能防止花生受AFB1污染。
外文摘要：Peanut pods are easily infected by aflatoxin-producing Aspergillus species from field soil. To assess the aflatoxin-producing Aspergillus sp. in different peanut field soils, 344 aflatoxin-producing Aspergillus strains were isolated from 600 soil samples of four agroecological zones in China (the Southeast coastal zone (SEC), the Yangtze River zone (YZR), the Yellow River zone (YR) and the Northeast zone (NE)). Nearly 94.2% (324/344) of strains were A. flavus and 5.8% (20/344) of strains were A. parasiticus. YZR had the highest population density of Aspergillus sp. and positive rate of aflatoxin production in isolated strains (1039.3 cfu·g-1, 80.7%), the second was SEC (191.5 cfu·g-1, 48.7%), the third was YR (26.5 cfu·g-1, 22.7%), and the last was NE (2.4 cfu·g-1, 6.6%). The highest risk of AFB₁ contamination on peanut was in YZR which had the largest number of AFB₁ producing isolates in 1g soil, followed by SEC and YR, and the lowest was NE. The potential risk of AFB₁ contamination in peanuts can increase with increasing population density and a positive rate of aflatoxin-producing Aspergillus sp. in field soils, suggesting that reducing aflatoxigenic Aspergillus sp. in field soils could prevent AFB₁ contamination in peanuts.
外文关键词：aflatoxin B-1；aflatoxin-producing Aspergillus；peanut soils；China
作者：Zhang, CS；Selvaraj, JN；Yang, QL；Liu, Y
作者单位：Chinese Acad Agr Sci
期刊名称：TOXINS
期刊影响因子：3.571
出版年份：2017
出版刊次：1
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