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Colonisation and aflatoxin formation by Aspergillus spp. on brown rices differing in endosperm properties
Author(s) -
Ilag Lina L.,
Juliano Bienvenido O.
Publication year - 1982
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740330117
Subject(s) - aflatoxin , endosperm , brown rice , bran , spore , aspergillus flavus , starch , food science , mycotoxin , biology , amylose , botany , amylase , hypha , enzyme , raw material , biochemistry , ecology
Aspergillus flavus Link and A. parasiticus Speare differed in sporulation and aflatoxin B 1 formation on 15 brown rices differing in starch properties and protein content. There was no significant correlation between the degree of spore formation by the fungi and the amount of aflatoxin they produced in the rice samples. Differences in sporulation and aflatoxin production were not correlated with the dimensions (weight and hardness) of brown rice nor with the protein content, alkali spreading value, amylose content and gel viscosity of milled rice. Aflatoxin B 1 was mainly concentrated in the bran layers. Histological examination revealed that the hyphae of A. flavus entered through cracks in the periderm and penetrated the endosperm.