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Arch. latinoam. nutr ; Arch. latinoam. nutr;53(3): 287-292, sept. 2003.
Article in Spanish | LILACS | ID: lil-356556

ABSTRACT

Rice, a cereal widely used in Venezuela for human and animal nutrition, is susceptible to aflatoxin contamination in the field and during storage. Therefore, the goal of this research was the evaluation of the efficacy and permanence of the ammoniation process through high pressure/high temperature (HP/HT) and atmospheric pressure/moderate temperature (AP/MT) conditions applied to rice samples artificially contaminated with aflatoxin B1. For this purpose a 2k design was drawn up considering the temperature, the rice moisture and the process time as variables. Under both sets of conditions, aflatoxin B1 concentration was reduced in a range of 90 per cent to 100 per cent. After in vitro stomach digestion simulation, toxin reversion ranged from 0 per cent to 19 per cent. In conclusion, the process efficacy and permanence were achieved through the use of high temperature and long process time for both sets of conditions (HP/HT and AP/MT), respectively.


Subject(s)
Aflatoxin B1 , Ammonia/chemistry , Food Preservation/methods , Food Contamination/prevention & control , Oryza/chemistry , Aflatoxin B1/analysis , Decontamination/methods , Hot Temperature , Time Factors
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