Melhor dose e dose econômica de TBHQ nos óleos de milho e canola. / Best and economical doses of tbhq in corn and canola oils.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2003

RESUMO

The increasing utilization of PET packaging in the last years in Brazil has concerned oil producers regarding oxidation. In this work, corn and canola oils, free from antioxidants and citric acid, were added of different TBHQ concentrations, and submited to accelerated (thermo and light induced) oxidation in a Schaal oven test at 63 0 C for 120 hours and in a photooxidation chamber for 168 hours. Peroxide and absorbance values at 232 nm and 270 nm were analysed in these oils. From the Schaal oven test, oil peroxide values were plotted against TBHQ concentrations and the best and the economical doses were determinated to be 119 mg/kg and 115 mg/kg TBHQ, respectively, for corn oil and 116 mg/kg and 108 mg/kg TBHQ, respectively, for canola oil. A shelf life test in PET flasks was conducted using 115 mg/kg TBHQ, for corn oil, and 108 mg/kg TBHQ, for canola oil, values that are lower than the maximum allowed by legislation and both oils were kept for 6 months.

ASSUNTO(S)

análise sensorial food conservation colza tecnologia de óleos - gorduras - graxas. antioxidantes milho oils – fats - waxes technology. food biochemistry sensory analysis colza corn conservação de alimentos bioquímica de alimentos antioxidants

ACESSO AO ARTIGO

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