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Free and bound phenolic profiles and antioxidant activity of milled fractions of different indica rice varieties cultivated in southern China.
Food Chem. 2014 Sep 15; 159:166-74.FC

Abstract

This study quantified free and bound phytochemicals and their antioxidant activity in the endosperm and bran/embryo of different indica rice varieties. Phytochemicals mainly existed as free form in the bran/embryo and as both free and bound forms in the endosperm. The average values of total phenolic content, flavonoid content, FRAP, ABTS and ORAC values in the bran/embryo were 3.1, 10.4, 8.2, 11.2 and 11.4 times higher than those in the endosperm, respectively. In whole brown rice, the bran contributed 59.2%, 53.7%, 47.7%, 55.5% and 56.9% of total phenolics, flavonoids, FRAP, ABTS and ORAC values, respectively. Seven individual phenolics (gallic, protocatechuic, chlorogenic, caffeic, syringic, coumaric and ferulic acids) were detected with most coumaric and ferulic acids in the bran. All measurements exhibited varietal differences. These findings provide important information for improving human health by encouraging the consumption of whole brown rice and its use in food product development.

Authors+Show Affiliations

Sericultural and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China.Sericultural and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China.Sericultural and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China.Sericultural and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China. Electronic address: mwzhh@vip.tom.com.Sericultural and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China.Sericultural and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China.Sericultural and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China.Sericultural and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, PR China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24767040

Citation

Ti, Huihui, et al. "Free and Bound Phenolic Profiles and Antioxidant Activity of Milled Fractions of Different Indica Rice Varieties Cultivated in Southern China." Food Chemistry, vol. 159, 2014, pp. 166-74.
Ti H, Li Q, Zhang R, et al. Free and bound phenolic profiles and antioxidant activity of milled fractions of different indica rice varieties cultivated in southern China. Food Chem. 2014;159:166-74.
Ti, H., Li, Q., Zhang, R., Zhang, M., Deng, Y., Wei, Z., Chi, J., & Zhang, Y. (2014). Free and bound phenolic profiles and antioxidant activity of milled fractions of different indica rice varieties cultivated in southern China. Food Chemistry, 159, 166-74. https://doi.org/10.1016/j.foodchem.2014.03.029
Ti H, et al. Free and Bound Phenolic Profiles and Antioxidant Activity of Milled Fractions of Different Indica Rice Varieties Cultivated in Southern China. Food Chem. 2014 Sep 15;159:166-74. PubMed PMID: 24767040.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Free and bound phenolic profiles and antioxidant activity of milled fractions of different indica rice varieties cultivated in southern China. AU - Ti,Huihui, AU - Li,Qing, AU - Zhang,Ruifen, AU - Zhang,Mingwei, AU - Deng,Yuanyuan, AU - Wei,Zhencheng, AU - Chi,Jianwei, AU - Zhang,Yan, Y1 - 2014/03/17/ PY - 2013/12/03/received PY - 2014/03/03/revised PY - 2014/03/08/accepted PY - 2014/4/29/entrez PY - 2014/4/29/pubmed PY - 2015/11/6/medline KW - Antioxidant activity KW - Flavonoids KW - Milled rice fraction KW - Phenolic acids KW - Phenolics KW - Rice variety SP - 166 EP - 74 JF - Food chemistry JO - Food Chem VL - 159 N2 - This study quantified free and bound phytochemicals and their antioxidant activity in the endosperm and bran/embryo of different indica rice varieties. Phytochemicals mainly existed as free form in the bran/embryo and as both free and bound forms in the endosperm. The average values of total phenolic content, flavonoid content, FRAP, ABTS and ORAC values in the bran/embryo were 3.1, 10.4, 8.2, 11.2 and 11.4 times higher than those in the endosperm, respectively. In whole brown rice, the bran contributed 59.2%, 53.7%, 47.7%, 55.5% and 56.9% of total phenolics, flavonoids, FRAP, ABTS and ORAC values, respectively. Seven individual phenolics (gallic, protocatechuic, chlorogenic, caffeic, syringic, coumaric and ferulic acids) were detected with most coumaric and ferulic acids in the bran. All measurements exhibited varietal differences. These findings provide important information for improving human health by encouraging the consumption of whole brown rice and its use in food product development. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/24767040/Free_and_bound_phenolic_profiles_and_antioxidant_activity_of_milled_fractions_of_different_indica_rice_varieties_cultivated_in_southern_China_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0308-8146(14)00420-8 DB - PRIME DP - Unbound Medicine ER -