AI Article Synopsis
- Rice bran oil (RBO), particularly from colored rice, is rich in beneficial phytochemicals and is widely used in food, cosmetics, and health products.
- The study compared phytochemical content in RBO extracted from Red Jasmine rice, Hom-nin rice, and Khao Dawk Mali 105 rice using three methods: cold-press extraction (CPE), solvent extraction (SE), and supercritical CO extraction (SC-CO).
- Results indicated that colored rice, especially Hom-nin rice, had the highest concentration of phytochemicals, with CPE yielding the most potent oil compared to the other extraction methods.
Article Abstract
Rice bran oil (RBO) especially from colored rice is rich in phytochemicals and has become popular in food, cosmetic, nutraceutical and pharmaceutical applications owing to its offering health benefits. This study determined the contents of phytochemicals including oryzanols, phytosterols, tocopherols (Toc) and tocotrienols (T3) in RBOs extracted using different methods namely cold-press extraction (CPE), solvent extraction (SE) and supercritical CO extraction (SC-CO). Two colored rice, Red Jasmine rice (RJM, red rice) and Hom-nin rice (HN, black rice), were studied in comparison with the popular Thai fragrant rice Khao Dawk Mali 105 (KDML 105, white rice). RBOs were found to be the rich source of oryzanols, phytosterols, Toc and T3. Rice varieties had a greater effect on the phytochemicals concentrations than extraction methods. HN rice showed the significantly highest concentration of all phytochemicals, followed by RJM and KDML 105 rice, indicating that colored rice contained high concentration of phytochemicals in the oil than non-colored rice. The RBO samples extracted by the CPE method had a greater concentration of the phytochemicals than those extracted by the SC-CO and SE methods, respectively. In terms of phytochemical contents, HN rice extracted using CPE method was found to be the best.
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| http://dx.doi.org/10.5650/jos.ess17122 | DOI Listing |
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