Effet d'incorporation de l'huile essentielle de Romarin sur la qualité de l'huile de soja

Abstract

In our study, we used four methods, HD, SD, MAHD and US-MAHD for the extraction of rosemary’s essential oil from aerial part of the plant. The US-MAHD shows the best yield of extraction compared to the others methods. The different oils extracted was submitted to the antioxidant activities, DPPH, ABTS and reducing power, the results obtained shows that the US-MAHD have a great power of antioxidant activities, so the latter was selected to be the best methods for extraction and enrichment of soybean oil. The effect of two independent variable, Ratio and time, of UAE and CM was estimated by using response surface methodology. The optimum condition of enrichment to obtain a better antioxidant activity in UAE was 69,35ppm for ratio and 10min for time. An RBD (refined Bleached and Deodorized) soybean oil obtained from Cevital group (Bejaia) was enriched by the essential oil. The induction time using Rancimat method, Polar compound and radical scavenging activity was determined. Rancimat results was 13,88h for the SO-REO, for the polar compound the enriched oil was improved to 10h compared to 4h with unenriched one, the DPPH (%) was 73% for the SO-REO and 58% for the SO.