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Phytochemicals characterization of solvent extracts from taro-scented japonica rice bran.
J Food Sci. 2011 May; 76(4):C656-62.JF

Abstract

The major phytochemicals and antioxidant properties of taro-scented rice bran (TaiNung 71; TN71) extracts using 3 different solvents are characterized. Some progress is realized in creating an economic value for rice bran that has long been considered an agricultural waste. Various solvent extracts reveal the presence of phenolic compounds, oryzanols, tocopherols, and tocotrienols. Ethyl acetate (EtOAc) can extract more oryzanols (1.55 ± 0.20 g/kg rice bran). Meanwhile, the methanol (MeOH) extract possesses a higher yield in total contents (15.42 ± 1.41 g/kg bran), which includes phenolic compounds (2.69 ± 0.29 g gallic acid equivalent/kg bran), tocopherols (251 ± 26 mg/kg bran) and tocotrienols (111 ± 4 mg/kg bran). The MeOH extract exhibits more effective antioxidant activity against various oxidative systems in vitro, including the inhibition of linoleic acid peroxidation (33.89%), scavenging of DPPH radicals (83.88%), and reducing power. It is found that the yield, total content in phenolic compounds and tocols of the extracts increase with increasing Synder's polarity value and viscosity, which can then be used as the indices in isolation of the desired rice bran phytochemicals extracts.

Authors+Show Affiliations

Dept. of Food Science, National Penghu Univ. of Science and Technology, Penghu 880, Taiwan. huahan@npu.edu.twNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22417350

Citation

Chen, Hua Han, and Tsai Hsin Chiu. "Phytochemicals Characterization of Solvent Extracts From Taro-scented Japonica Rice Bran." Journal of Food Science, vol. 76, no. 4, 2011, pp. C656-62.
Chen HH, Chiu TH. Phytochemicals characterization of solvent extracts from taro-scented japonica rice bran. J Food Sci. 2011;76(4):C656-62.
Chen, H. H., & Chiu, T. H. (2011). Phytochemicals characterization of solvent extracts from taro-scented japonica rice bran. Journal of Food Science, 76(4), C656-62. https://doi.org/10.1111/j.1750-3841.2011.02143.x
Chen HH, Chiu TH. Phytochemicals Characterization of Solvent Extracts From Taro-scented Japonica Rice Bran. J Food Sci. 2011;76(4):C656-62. PubMed PMID: 22417350.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phytochemicals characterization of solvent extracts from taro-scented japonica rice bran. AU - Chen,Hua Han, AU - Chiu,Tsai Hsin, Y1 - 2011/04/14/ PY - 2012/3/16/entrez PY - 2012/3/16/pubmed PY - 2012/7/26/medline SP - C656 EP - 62 JF - Journal of food science JO - J Food Sci VL - 76 IS - 4 N2 - The major phytochemicals and antioxidant properties of taro-scented rice bran (TaiNung 71; TN71) extracts using 3 different solvents are characterized. Some progress is realized in creating an economic value for rice bran that has long been considered an agricultural waste. Various solvent extracts reveal the presence of phenolic compounds, oryzanols, tocopherols, and tocotrienols. Ethyl acetate (EtOAc) can extract more oryzanols (1.55 ± 0.20 g/kg rice bran). Meanwhile, the methanol (MeOH) extract possesses a higher yield in total contents (15.42 ± 1.41 g/kg bran), which includes phenolic compounds (2.69 ± 0.29 g gallic acid equivalent/kg bran), tocopherols (251 ± 26 mg/kg bran) and tocotrienols (111 ± 4 mg/kg bran). The MeOH extract exhibits more effective antioxidant activity against various oxidative systems in vitro, including the inhibition of linoleic acid peroxidation (33.89%), scavenging of DPPH radicals (83.88%), and reducing power. It is found that the yield, total content in phenolic compounds and tocols of the extracts increase with increasing Synder's polarity value and viscosity, which can then be used as the indices in isolation of the desired rice bran phytochemicals extracts. SN - 1750-3841 UR - https://www.unboundmedicine.com/medline/citation/22417350/Phytochemicals_characterization_of_solvent_extracts_from_taro_scented_japonica_rice_bran_ L2 - https://doi.org/10.1111/j.1750-3841.2011.02143.x DB - PRIME DP - Unbound Medicine ER -