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| Arrahman,Arif; Sigalingging,Efendy; Trinovita,Elsa; Saputri,Fadlina Chany; Mun'im,Abdul. |
| This study investigated the effect of ionic liquid (IL)-microwave assisted extraction (MAE) on γ-oryzanol extraction from rice bran (Oryza sativa L.). The conditions included the concentration of IL, liquid (IL)/solid (sample) ratio, extraction time, and microwave power. The use of 1-butyl-3-methylimidazolium ([Bmim]BF4) as a selected solvent in IL-MAE method was developed for extraction of γ-oryzanol from rice bran. The Box-Behnken design on four factors with response surface methodology (RSM) was used to optimize the experimental conditions. The optimum conditions for the MAE were a [Bmim]BF4 concentration of 0.7 M, liquid/solid ratio of 15 mL/g, extraction time of 10 minutes, and 30% microwave power with a γ-oryzanol value of 0.41 mg/g. The experimental... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: [Bmim]BF4; Ionic liquid; IL-MAE; Γ-oryzanol; Tyrosinase. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100549 |
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| Pengkumsri,Noppawat; Chaiyasut,Chaiyavat; Sivamaruthi,Bhagavathi Sundaram; Saenjum,Chalermpong; Sirilun,Sasithorn; Peerajan,Sartjin; Suwannalert,Prasit; Sirisattha,Sophon; Chaiyasut,Khontaros; Kesika,Periyanaina. |
| AbstractThe current study was employed to assess the influence of the different extraction methods on total tocols, γ-oryzanol content, and antioxidant properties of Chiang Mai Black rice, Mali Red rice, and Suphanburi-1 Brown rice bran oil. Rice bran oil (RBO) was extracted by Hexane, Hot pressed, Cold pressed, and Supercritical Fluid Extraction (SFe) methods. High yield of RBO was extracted by hexane and SFe methods. Total and subgroups of tocols, and γ-oryzanol content were determined by HPLC. The hexane extracted sample accounts for high content of γ-oryzanol and tocols. Besides, all of RBO extracts contain a significantly high amount of γ-tocotrienol. In vitro antioxidant assay results indicated that superior quality of oil was recovered by hexane... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rice bran oil; Tocols; Γ-oryzanol; Antioxidants. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000300493 |
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