[Aflatoxins in food: tests of decontamination of peanut cakes by ionizing treatment].
The efficacy of ionising treatment for decontaminating peanut cakes was tested. The influence of cakes water content and the effect of ionisation dose rate were studied. The results obtained after a reverse phase liquid chromatographic determination of B1, B2, G1 and G2 aflatoxins have revealed an important contamination of the peanut cakes (up to 1000 ppb of total aflatoxin's contents). After ionising treatment at 25 kGy, the aflatoxins degradation in peanut cake's was less important in dried samples (about 5-10% at 0.55 water activity: aw) than in the humid ones (40-60% degradation at 0.95 water activity). At this dose, any indicative difference of the degradation rate of aflatoxins, with regard to the ionising process was observed. The efficacy of ionising treatment for decontaminating peanut cakes could probably be improved, however the economic interest of such process as alternative of the treatment with ammonia is questionable.
Diop
Y M
YM
Laboratoire de Chimie Analytique et Toxicologie, Faculté de Médecine et Pharmacie, UCAD de Dakar, Sénégal.
Ndiaye
B
B
Diouf
A
A
Fall
M
M
Thiam
A
A
Ciss
M
M
Hasselmann
C
C
Ba
D
D
D016604:Aflatoxin B1 / Q000032:analysis / Q000737:chemistry / Q000528:radiation effects; D000348:Aflatoxins / Q000032:analysis* / Q000737:chemistry / Q000528:radiation effects; D010367:Arachis / Q000737:chemistry* / Q000382:microbiology / Q000528:radiation effects; D001230:Aspergillus / Q000378:metabolism; D002853:Chromatography, Liquid; D003037:Cobalt Radioisotopes; D004307:Dose-Response Relationship, Radiation; D005506:Food Contamination; D005514:Food Irradiation; D005516:Food Microbiology; D015394:Molecular Structure; D010315:Particle Accelerators; D012675:Senegal; D014867:Water
D000348:Aflatoxins; D003037:Cobalt Radioisotopes; D014867:Water; C027955:aflatoxin G1; C029754:aflatoxin G2; C029753:aflatoxin B2; D016604:Aflatoxin B1