title: [Effect of aflatoxin B1 on the enzymatic activities of Bacillus thuringiensis (Berliner)].
abstract: At 20 degrees C, aflatoxin B1, at a sublethal dose, decreases the activity of alkaline phosphatase (EC 3.1.3.1), alpha-glucosidase (EC 3.2.1.20), esterase (EC 3.1.1.1), chymotrypsin (EC 3.4.21.1), leucine aminopeptidase (EC 3.4.11.1), and phosphoamidase (EC 3.9.1.1) biosynthesis in Bacillus thuringiensis (Berliner). In contrast, at 41 degrees C no significant decrease was observed. At this temperature, the mycotoxin is not destroyed or metabolized and bacterial cells are resistant to the toxin.
mesh_terms: D000348:Aflatoxins / Q000494:pharmacology*; D000469:Alkaline Phosphatase / Q000378:metabolism; D001413:Bacillus thuringiensis / Q000187:drug effects / Q000201:enzymology*; D002918:Chymotrypsin / Q000378:metabolism; D004352:Drug Resistance, Microbial; D004950:Esterases / Q000378:metabolism; D005959:Glucosidases / Q000378:metabolism; D006867:Hydrolases / Q000378:metabolism*; D007931:Leucyl Aminopeptidase / Q000378:metabolism; D013696:Temperature
chemical_list: D000348:Aflatoxins; D006867:Hydrolases; D004950:Esterases; D000469:Alkaline Phosphatase; D005959:Glucosidases; D007931:Leucyl Aminopeptidase; D002918:Chymotrypsin
vernacular_title: Effet de l'aflatoxine B1 sur les activités enzymatiques de Bacillus thuringiensis (Berliner).