Resumen

MILLAN TRUJILLO, Félix Rafael  y  MARTINEZ YEPEZ, Amaury José. Eficacia y estabilidad del proceso de amonificacion como tecnologia de descontaminacion de aflatoxina B₁ en arroz ( Oriza sativa ). ALAN [online]. 2003, vol.53, n.3, pp.287-292. ISSN 0004-0622.

SUMMARY. Efficacy and stability of ammoniation process as aflatoxin B₁ decontamination technology in rice ( Oriza sativa ). 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% to 100%. After in vitro stomach digestion simulation, toxin reversion ranged from 0% to 19%. 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.

Palabras clave : aflatoxin B₁; decontamination; ammoniation; rice.