Sunflower oil and soy oil were used as alternative solvents and the effects of various parameters on extraction yield were studied. In this way, an oil enriched with antioxidants is produced. The objective of this work was to develop a new process for pomegranate peels application in food industries based on ultrasound-assisted extraction of carotenoids using different vegetable oils as solvents. Goula, Athanasia M Ververi, Maria Adamopoulou, Anna Kaderides, Kyriakos Green ultrasound-assisted extraction of carotenoids from pomegranate wastes using vegetable oils. This may be due to the fact that parboiling releases the oil. Both extraction methods gives higher percentage of oil from par boiled rice bran compared with raw rice bran. Also, effect of parboiling of paddy on hexane and ultrasound-assisted aqueous extraction was studied. With regard to quality, the oil extracted by ultrasound-assisted aqueous process had a lower content of free fatty acid and lower color imparting components than the hexane- extracted oil. This result implied that the yield of rice bran oil was significantly influenced by ultrasound. The results showed that the yield of rice bran oil at ultrasound-assisted aqueous extraction was close to the yield of oil extracted by hexane Soxhlet extraction. Moreover, extraction yields were compared to ultrasound-assisted aqueous extraction and Soxhlet extraction. The highest extraction efficiency was found at pH=12, temperature of 45Â☌, agitation speed of 800rpm and agitation time of 15min, ultrasound treatment time of 70min and ultrasound treatment temperature of 25Â☌. Key factors controlling the extraction and optimal operating conditions were identified. In this work, aqueous extraction of rice bran oil was done without and with ultrasound pretreatment. The ultrasound-assisted aqueous extraction of rice bran oil.
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