Caracteriza？？o do óleo de Farelo de Arroz Refinado

the aim of this study was to characterize chemically and physically refined rice bran oil. the samples of the rice (oryza sativa) bran oil were provided by irgovel industry (pelotas/rs/brasil) and helmut tessmann industry (camaqu？/rs/brasil). the acidity content of the chemically and physically refined rice bran oil was 0.3% (oleic acid). the peroxide value for chemically and physically refined rice bran oil was 2.07 meq g. kg-1 and 1.72 meq g.kg-1, respectively. the chemically refined oil showed a content of 43.52 mg. 100 g-1 of tocopherols, and the physically refined rice bran oil was 35.60 mg.100 g-1. the ? - oryzanol content was 33.55 mg.100 g-1 and 732.60 mg.100 g-1 for the chemically and physically refined rice oils, respectively. therefore, the neutralization step affects the content of ? -oryzanol.