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Ponte Academic Journal
Sep 2017, Volume 73, Issue 9

EXTRACTION OF OIL AND ANTIOXIDANT FROM RICE BRAN (ORYZA SATIVA) USING COSOLVENT AND ULTRASOUND IRRADIATION

Author(s): H. Hadiyanto ,Widayat, Dani Puji Utomo, Bella Azaria Susanto

J. Ponte - Sep 2017 - Volume 73 - Issue 9
doi: 10.21506/j.ponte.2017.9.29



Abstract:
Rice bran oil was extracted by using ultrasonic-assisted extraction with ethanol and hexane solvents. The experiments were carried out at variation of solvent to rice bran ratio =3:1;4:1; 5:1; 6:1 (w/w) and at a fixed extraction time of 60 min. The oil components were separated by rotary vacuum evaporator and the radical scavenging capability of the oil was tested by using DPPH method. The phenolic compound was analyzed using UV/VIS spectrophotometer and expressed as total gallic acid. The results showed that increasing amount of solvent would increase the yield of oil and the highest yield (23%) was obtained at the solvent: rice bran ratio of 6:1. The increase of solvent:oil ratio also lead the increase of total phenolic compound. The ultrasound irradiation could improve the obtained yield from 23% to 26% at the ultrasound frequency of 40 kHz.
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