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Appl Environ Microbiol. 1974 April; 27(4): 625-628
Copyright © 1974 American Society for Microbiology. All Rights Reserved.

Distribution of Zearalenone-Producing Fusarium Species in Japan

Laboratory of Microbial Chemistry, Faculty of Pharmaceutical Sciences, Science University of Tokyo, Tokyo, Japan
Food Research Institute, Ministry of Agriculture and Forestry, Tokyo, Japan

ABSTRACT

One hundred sixty-six isolates of Fusarium spp. from domestic cereal grains, feed, and other sources were examined for their ability to produce zearalenone on autoclaved moist rice grains. They belonged to the following species (number of producers/number tested): F. roseum (9/28), F. roseum (Culmorum) (3/4), F. roseum (Gibbosum) (2/5), F. roseum (Avenaceum) (1/2), F. roseum (Scirpi) (0/1), F. tricinctum (1/4), F. tricinctum (Sporotrichiella) (0/7), F. lateritium (1/1), F. episphaeria (0/2), F. moniliforme (0/3), F. oxysporum (0/12), F. rigidiusculum (0/4), F. solani (0/4), F. splendens (0/1), F. nivale (0/2), and Fusarium spp. (15/86). Zearalenone was isolated from molded rice by ethanol extraction and purified by column chromatography. Selected isolates of F. roseum M-3-2 and F. roseum (Gibbosum) A-O-2 produced 50 to 100 mg of zearalenone per kg of rice. Increased yields (250 to 407 mg/kg of rice) were obtained by F. roseum M-3-2 when the substrate was supplemented with 1% peptone.

¹ Present address: Faculty of Education, Gunma University, Maebashi-shi, Japan.