title: Aflatoxin production by Aspergillus flavus field isolates.
abstract: A total of 103 Aspergillus flavus isolates from 150 agricultural commodities and animal feed samples were tested for aflatoxin production by growing on a semisynthetic liquid medium for 1 w followed by chromatography and spectrophotometric quantification for aflatoxin. All isolates produced 1 or more aflatoxins; 41 isolates (40%) produced all 4 aflatoxins (B1, B2, G1 and G2). Aflatoxin G1 was produced by 81 (80%) of the isolates.
authors.affiliation: Department of Microbiology, Immunology and Preventive Medicine, Iowa State University, Ames 50011.
authors.forename: M A
authors.initials: MA
authors.lastname: Gabal
authors.forename: S A
authors.initials: SA
authors.lastname: Hegazi
authors.forename: N
authors.initials: N
authors.lastname: Hassanin
mesh_terms: D016604:Aflatoxin B1 / Q000096:biosynthesis; D000348:Aflatoxins / Q000096:biosynthesis*; D000821:Animal Feed / Q000382:microbiology; D001231:Aspergillus flavus / Q000302:isolation & purification / Q000378:metabolism*; D002850:Chromatography, Gel; D005516:Food Microbiology; D010936:Plant Extracts / Q000378:metabolism; D012015:Reference Standards; D013056:Spectrophotometry, Ultraviolet; D003313:Zea mays / Q000382:microbiology
chemical_list: D000348:Aflatoxins; D010936:Plant Extracts; C027955:aflatoxin G1; C029754:aflatoxin G2; C029753:aflatoxin B2; D016604:Aflatoxin B1