Crude Oil Yield and Properties of Rice Bran Oil from Different Varieties as Affected by Extraction Conditions Using Soxhterm Method
- 6 Downloads
The current study was employed to investigate the effect of solvent type, extraction time and bran ratio on the rice bran oil (RBO) properties from three varieties of rice bran namely Bario, lowland and upland rice. RBO was extracted by using soxtherm extraction method using methanol solvent at different extraction time (3, 4 and 5 h) and bran ratio (10, 20 and 30 g). Free fatty acid (FFA), total phenolic content (TPC) and antioxidant properties were assessed. Solvent that has low polarity exhibited the attraction of polar component of oil with the highest yield by ethanol (16.16%), followed by methanol (15.38%). FFA contents occurred higher in lowland types of rice bran in all types of solvents at \(P<0.05\) with ethanol (12.73%), methanol (11.96%) and hexane (11.13%), while the total phenolic content and antioxidant properties were influenced by the types of rice bran and solvents used for extracting components out of the bran. The highest phenolic content in the crude oil was extracted using ethanol in lowland (0.509 mg/ml), and the lowest was extracted by hexane in Bario (0.061 mg/ml). The highest antioxidant activity was observed in RBO extracted using methanol of lowland (73.74%) and RBO extracted using ethanol of upland (73.65%), while the lowest were observed in RBO extracted using hexane. The different types of solvent have the significant impact on the crude oil yield and properties of crude oil extracted.
KeywordsAntioxidant Free fatty acid Rice bran oil Solvent extraction Soxtherm Total phenolic content
Unable to display preview. Download preview PDF.
Authors acknowledge Agro Biotechnology Institute, Serdang for facilities and laboratory instrument and Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia for the equipment and supports. This work was supported by Ministry of Higher Education Malaysia (Fundamental Research Grant No. R.J130000.7844.4F447) and Universiti Teknologi Malaysia (Research University Grants No. Q.J130000.2546.14H06 and Q.J130000.2546.16H78).
- 1.Grist, D.H.: Rice, 5th edn. Longman, London (1985)Google Scholar
- 2.Sauders, R.M.: The properties of rice bran as food stuff. Cereal Food World 35(7), 632–636 (1990)Google Scholar
- 3.Xu, Z.: Purification and antioxidant properties of rice bran (Gamma)-oryzanol components. LSU Historical Dissertations and Theses. 6642 (1998)Google Scholar
- 4.Duvernay, W.H.; Assad, J.M.; Sabliov, C.M.; Lima, M.; Xu, Z.: Microwave extraction of antioxidant components from rice bran. J. Pharm. Eng. 25, 126–130 (1985)Google Scholar
- 8.Nasir, S.; Fitriyanti, F.; Kamila, H.: Ekstraksi Dedak Padi menjadi Minyak mentah Dedak Padi (Crude Rice Bran Oil) Dengan Pelarut N-Hexane dan Ethanol. Jurnal Teknik Kimia. 16(2), 1–10 (2009)Google Scholar
- 11.Mohd Daud, N.S.; Abang Zaidel, D.N.; Lai, K.S.; Muhamad, I.I.; Mohd Jusoh, Y.M.: Antioxidant properties of rice bran oil from different varieties extracted by solvent extraction methods. J. Teknol. 78(6–12), 107–110 (2016)Google Scholar
- 12.Mohd Daud, N.S.; Abang Zaidel, D.N.; Lai, K.S.; Mohd Jusoh, Y.M.; Muhamad, I.I.; Ya’akob, H.: Microwave-assisted stabilisation and storage stability study of rice bran oil from different varieties. Chem. Eng. Trans. 56, 1285–1290 (2017)Google Scholar
- 13.Singleton, V.L.; Rossi, J.A.: Colorimetry of total phenolic with phosphomolybdic-phosphotungstic acid reagent. Am. J. Enol. Viticult. 16, 144–158 (1965)Google Scholar
- 14.Vorarat, S.; Managit, C.; Iamthanakul, L.; Soparat, W.; Kamkaen, N.: Examination of antioxidant activity and development of rice bran oil and gamma-oryzanol microemulsion. J. Health Res. 24(2), 67–72 (2010)Google Scholar
- 16.Mohd Daud, N.S.: Extraction of rice bran oil using soxtherm extraction method. MSc Thesis. Universiti Teknologi Malaysia (2016)Google Scholar
- 23.Theerakulkait, C.; Chaiseri, S.; Mongkolkanchanasiri, S.: Extraction and some functional properties of protein extract from rice bran. J. Natl. Sci. 40, 209–214 (2006)Google Scholar
- 26.Thanonkaew, A.; Wongyai, S.; McClements, D.J.; Decker, E.A.: Effect of stabilization of rice bran by domestic heating on mechanical extraction yield, quality, and antioxidant properties of cold-pressed rice bran oil (Oryza sativa L.). J. Food Sci. Technol. 48, 231–236 (2012)Google Scholar
- 29.Bojan, S.G.; Duraijaj, S.K.: Producing biodiesel from high free fatty acid Jatropha Curcas by a two step method—an Indian case study. J. Sustain. Energy Environ. 3, 63–66 (2012)Google Scholar
- 33.Huda-Faujan, N.; Noriham, A.; Norrakiah, A.S.; Babji, A.S.: Antioxidative activities of water extracts of some Malaysian herbs. ASEAN Food J. 14(1), 61–68 (2007)Google Scholar