Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil: Systematic HSP theory and experimental evaluation
This study aimed to systematically find an alternative solvent to replace hexane for the extraction of bio-oil with high γ-oryzanol content from rice bran (RB). The selection involved predicting solubility through Hansen solubility theory, experimental validation, determination of suitable extractio...
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KeAi Communications Co., Ltd.
2024-11-01
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| Series: | Journal of Bioresources and Bioproducts |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2369969824000501 |
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| author | Phannipha Daisuk Seiichi Takami Masaki Honda Motonobu Goto Chonlatep Usaku Artiwan Shotipruk |
| author_facet | Phannipha Daisuk Seiichi Takami Masaki Honda Motonobu Goto Chonlatep Usaku Artiwan Shotipruk |
| author_sort | Phannipha Daisuk |
| collection | DOAJ |
| description | This study aimed to systematically find an alternative solvent to replace hexane for the extraction of bio-oil with high γ-oryzanol content from rice bran (RB). The selection involved predicting solubility through Hansen solubility theory, experimental validation, determination of suitable extraction conditions, and comparison of oil quality with that of conventional hexane. A wide variety of solvents: subcritical water (SCW), supercritical carbon dioxide (SCCO2), bio-based solvents (alcohols and terpenes), and liquefied dimethyl ether (LDME), were initially assessed for rice bran oil (RBO) and γ-oryzanol solubility using Hansen solubility spheres. Solvents demonstrating high solubility for both RBO and γ-oryzanol, including LDME, ethyl acetate, acetone, and others (alcohols and SCCO2) known for effective vegetable oil extraction, were selected/identified for experimental extraction comparison. Among these, LDME performed better overall, affording greater solubility and requiring less solvent, shorter duration, lower pressure, and no additional co-solvents for equivalent extractions. Optimal conditions for LDME extraction were identified as 30 °C with a solvent-to-sample ratio of 10 mL/g and an extraction time of 10 min. Oils extracted with LDME and hexane displayed similar fatty acid compositions and no adverse effects on RB protein and carbohydrate structures after LDME extraction were observed. This study demonstrates LDME as a promising alternative to replace hexane for RBO extraction to further valorize this abundant low-cost RB residue into bio-oil and its γ-oryzanol and de-oil RB co-products. |
| format | Article |
| id | doaj-art-726a44e2a20040efb6ce02450acb836d |
| institution | OA Journals |
| issn | 2369-9698 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Bioresources and Bioproducts |
| spelling | doaj-art-726a44e2a20040efb6ce02450acb836d2025-08-20T02:08:42ZengKeAi Communications Co., Ltd.Journal of Bioresources and Bioproducts2369-96982024-11-019457759110.1016/j.jobab.2024.06.002Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil: Systematic HSP theory and experimental evaluationPhannipha Daisuk0Seiichi Takami1Masaki Honda2Motonobu Goto3Chonlatep Usaku4Artiwan Shotipruk5Bio-Circular-Green-economy Technology & Engineering Center, BCGeTEC, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, ThailandDepartment of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanDepartment of Chemistry, Faculty of Science & Technology, Meijo University, Shiogamaguchi, Tempaku-ku, Nagoya, Aichi 468-8502, JapanDepartment of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan; Super Critical Technology Centre Co. Ltd., Kuwana, Mie 511-0838, JapanBio-Circular-Green-economy Technology & Engineering Center, BCGeTEC, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, ThailandBio-Circular-Green-economy Technology & Engineering Center, BCGeTEC, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Research Unit on Sustainable Algal Cultivation and Applications, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Corresponding author.This study aimed to systematically find an alternative solvent to replace hexane for the extraction of bio-oil with high γ-oryzanol content from rice bran (RB). The selection involved predicting solubility through Hansen solubility theory, experimental validation, determination of suitable extraction conditions, and comparison of oil quality with that of conventional hexane. A wide variety of solvents: subcritical water (SCW), supercritical carbon dioxide (SCCO2), bio-based solvents (alcohols and terpenes), and liquefied dimethyl ether (LDME), were initially assessed for rice bran oil (RBO) and γ-oryzanol solubility using Hansen solubility spheres. Solvents demonstrating high solubility for both RBO and γ-oryzanol, including LDME, ethyl acetate, acetone, and others (alcohols and SCCO2) known for effective vegetable oil extraction, were selected/identified for experimental extraction comparison. Among these, LDME performed better overall, affording greater solubility and requiring less solvent, shorter duration, lower pressure, and no additional co-solvents for equivalent extractions. Optimal conditions for LDME extraction were identified as 30 °C with a solvent-to-sample ratio of 10 mL/g and an extraction time of 10 min. Oils extracted with LDME and hexane displayed similar fatty acid compositions and no adverse effects on RB protein and carbohydrate structures after LDME extraction were observed. This study demonstrates LDME as a promising alternative to replace hexane for RBO extraction to further valorize this abundant low-cost RB residue into bio-oil and its γ-oryzanol and de-oil RB co-products.http://www.sciencedirect.com/science/article/pii/S2369969824000501Rice bran oilγ-oryzanolLiquefied dimethyl etherHansen solubility sphereFourier transform infrared |
| spellingShingle | Phannipha Daisuk Seiichi Takami Masaki Honda Motonobu Goto Chonlatep Usaku Artiwan Shotipruk Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil: Systematic HSP theory and experimental evaluation Journal of Bioresources and Bioproducts Rice bran oil γ-oryzanol Liquefied dimethyl ether Hansen solubility sphere Fourier transform infrared |
| title | Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil: Systematic HSP theory and experimental evaluation |
| title_full | Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil: Systematic HSP theory and experimental evaluation |
| title_fullStr | Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil: Systematic HSP theory and experimental evaluation |
| title_full_unstemmed | Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil: Systematic HSP theory and experimental evaluation |
| title_short | Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil: Systematic HSP theory and experimental evaluation |
| title_sort | liquefied dimethyl ether as alternative extraction solvent for high γ oryzanol rice bran oil systematic hsp theory and experimental evaluation |
| topic | Rice bran oil γ-oryzanol Liquefied dimethyl ether Hansen solubility sphere Fourier transform infrared |
| url | http://www.sciencedirect.com/science/article/pii/S2369969824000501 |
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