Citation
Chooklin Supasit, . Extraction of brown rice extract and application in refined palm olein during accelerated storage. pp. 291-296. ISSN 22317546
Abstract
This research aimed to determine optimum condition of the phenolic compounds from brown rice extract from Sung Yod Phatthalung and to determine their applications as an antioxidant in refined palm olein. Brown rice was extracted with solvent concentration (40 - 80 ethanol vv-1) pH (2 - 8) and extraction time (5 - 60 min). Total phenolic content and antioxidant activities as determined by 2 2-diphenyl-1-picrylhydrazyl (DPPH) of brown rice extract were measured. The optimum conditions were as follows: ethanol concentration 60 (vv-1); pH 6 and extraction time 25 min. Under the above-mentioned conditions the experimental total phenolic content and DPPH of brown rice was 1.30 mg ferulic acid equivalents/g of dry sample and 86.55 respectively. The oxidation properties (peroxide value PV and thiobarbutitutic acid reactive substance TBARS) of antioxidant in refined palm oil were compared with other synthetic antioxidants (butylated hydroxyanisole BHA and butylated hydroxytoluene BHT) at different concentration. It has been observed that the highest efficiency of BHT followed by brown rice extract BHA and control. The results revealed that the brown rice extract to be a potential antioxidant for stabilization of refined palm olein.
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Abstract
This research aimed to determine optimum condition of the phenolic compounds from brown rice extract from Sung Yod Phatthalung and to determine their applications as an antioxidant in refined palm olein. Brown rice was extracted with solvent concentration (40 - 80 ethanol vv-1) pH (2 - 8) and extraction time (5 - 60 min). Total phenolic content and antioxidant activities as determined by 2 2-diphenyl-1-picrylhydrazyl (DPPH) of brown rice extract were measured. The optimum conditions were as follows: ethanol concentration 60 (vv-1); pH 6 and extraction time 25 min. Under the above-mentioned conditions the experimental total phenolic content and DPPH of brown rice was 1.30 mg ferulic acid equivalents/g of dry sample and 86.55 respectively. The oxidation properties (peroxide value PV and thiobarbutitutic acid reactive substance TBARS) of antioxidant in refined palm oil were compared with other synthetic antioxidants (butylated hydroxyanisole BHA and butylated hydroxytoluene BHT) at different concentration. It has been observed that the highest efficiency of BHT followed by brown rice extract BHA and control. The results revealed that the brown rice extract to be a potential antioxidant for stabilization of refined palm olein.
Additional Metadata
Item Type: | Article |
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AGROVOC Term: | Extracts |
AGROVOC Term: | Olein |
AGROVOC Term: | Storage |
AGROVOC Term: | Phenolic compounds |
AGROVOC Term: | Ethanol |
AGROVOC Term: | Extraction |
AGROVOC Term: | Ferulic acid |
AGROVOC Term: | Oxidation |
AGROVOC Term: | Peroxides |
AGROVOC Term: | Butylated hydroxyanisole |
Depositing User: | Ms. Suzila Mohamad Kasim |
Last Modified: | 24 Apr 2025 06:26 |
URI: | http://webagris.upm.edu.my/id/eprint/21286 |
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