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Effect of Subcritical Solvent Extraction Conditions on Amount of ?-Oryzanol and ?-Tocopherolin Dawk Pa-Yom Rice Bran Oil |
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| รหัสดีโอไอ | |
| Creator | Duangkamol Ruen-ngam |
| Title | Effect of Subcritical Solvent Extraction Conditions on Amount of ?-Oryzanol and ?-Tocopherolin Dawk Pa-Yom Rice Bran Oil |
| Contributor | Chitti Thawai, Sujitra Sukonthamut and Kittisak Khuwaranyu |
| Publisher | King Mongkut's Institute of Technology Ladkrabang |
| Publication Year | 2564 |
| Journal Title | Current Applied Science and Technology |
| Journal Vol. | 21 |
| Journal No. | 1 |
| Page no. | 154-164 |
| Keyword | extraction, kinetics, oil recovery, solventextraction, ?-oryzanol, ?-tocopherol, ricebran |
| URL Website | https://www.tci-thaijo.org/index.php/cast |
| Website title | https://www.tci-thaijo.org/index.php |
| ISSN | 2586-9396 |
| Abstract | This research focused on the subcritical solvent extraction of phytochemicals ?-oryzanol and ?-tocopherol from upland rice bran (Dawk Pa-yomvariety, DY). Subcritical solvent extraction was conducted using a batch reactor. The temperature wasvaried in range from 80 to 120ฐC for 20 to 60 min. The solvents in use were ethanol, methanol,and water. ?-Oryzanol and ?-tocopherol were simultaneously analyzed by HPLC. Antioxidant activitywas determined by a DPPH radical assay.Methanol was able toextract a higher level of ?-tocopherol thanethanol and water.Extraction by methanol gavehigher antioxidant activity than ethanol. Even though water could notextract ?-oryzanol,it was able to extractsubstances with higher yield of antioxidant activity than either methanol and ethanol. Increasing theextraction temperature increased the oil yield, ?-oryzanol and ?-tocopherol in parallelwith an increasedantioxidant activity. During the extraction process, somedegradation of antioxidants was observed, and this showed the importance of kinetics parameters in this research |
