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Identification and quantification of phenolic and flavonoid components in straw and seed husk of some rice varieties (Oryza sativa L.) and their antioxidant properties.
J Sci Food Agric. 2014 Aug; 94(11):2324-30.JS

Abstract

BACKGROUND

Plant foods are rich sources of bioactive compounds that can act as antioxidants to prevent heart disease, reduce inflammation, reduce the incidence of cancers and diabetes. This study aimed to determine the phenolics and flavonoids profiling in three varieties of rice straw and five varieties of the seed husk of Iranian rice using high-performance liquid chromatography (HPLC). Furthermore, the antioxidant activities of the extracts were evaluated by using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and nitric oxide assays.

RESULTS

HPLC analyses showed that the gallic acid, pyrogallol, apigenin and rutin were the main phenolic and flavonoid compounds in all varieties of rice. In addition, the methanolic extracts of Hashemi and Ali Kazemi varieties showed the highest amounts of phenolic and flavonoid contents, respectively. Rice straw and husk of Iranian varieties showed considerable antioxidant activity and Hashemi indicated significantly (P < 0.01) higher DPPH and nitric oxide free radical scavenging activities when compared to the other varieties.

CONCLUSION

The present study revealed that rice straw and seed husk of Iranian varieties shows high antioxidant activities and they contain various types of phenolic and flavonoid compounds that could be use in food and medical industries.

Authors+Show Affiliations

Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia (UPM), 43400, UPM Serdang, Selangor, Malaysia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24415452

Citation

Karimi, Ehsan, et al. "Identification and Quantification of Phenolic and Flavonoid Components in Straw and Seed Husk of some Rice Varieties (Oryza Sativa L.) and Their Antioxidant Properties." Journal of the Science of Food and Agriculture, vol. 94, no. 11, 2014, pp. 2324-30.
Karimi E, Mehrabanjoubani P, Keshavarzian M, et al. Identification and quantification of phenolic and flavonoid components in straw and seed husk of some rice varieties (Oryza sativa L.) and their antioxidant properties. J Sci Food Agric. 2014;94(11):2324-30.
Karimi, E., Mehrabanjoubani, P., Keshavarzian, M., Oskoueian, E., Jaafar, H. Z., & Abdolzadeh, A. (2014). Identification and quantification of phenolic and flavonoid components in straw and seed husk of some rice varieties (Oryza sativa L.) and their antioxidant properties. Journal of the Science of Food and Agriculture, 94(11), 2324-30. https://doi.org/10.1002/jsfa.6567
Karimi E, et al. Identification and Quantification of Phenolic and Flavonoid Components in Straw and Seed Husk of some Rice Varieties (Oryza Sativa L.) and Their Antioxidant Properties. J Sci Food Agric. 2014;94(11):2324-30. PubMed PMID: 24415452.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Identification and quantification of phenolic and flavonoid components in straw and seed husk of some rice varieties (Oryza sativa L.) and their antioxidant properties. AU - Karimi,Ehsan, AU - Mehrabanjoubani,Pooyan, AU - Keshavarzian,Maryam, AU - Oskoueian,Ehsan, AU - Jaafar,Hawa Z E, AU - Abdolzadeh,Ahmad, Y1 - 2014/02/26/ PY - 2013/10/20/received PY - 2014/01/05/revised PY - 2014/01/10/accepted PY - 2014/1/14/entrez PY - 2014/1/15/pubmed PY - 2015/2/3/medline KW - HPLC KW - antioxidant activity KW - rice straw KW - seed husk SP - 2324 EP - 30 JF - Journal of the science of food and agriculture JO - J Sci Food Agric VL - 94 IS - 11 N2 - BACKGROUND: Plant foods are rich sources of bioactive compounds that can act as antioxidants to prevent heart disease, reduce inflammation, reduce the incidence of cancers and diabetes. This study aimed to determine the phenolics and flavonoids profiling in three varieties of rice straw and five varieties of the seed husk of Iranian rice using high-performance liquid chromatography (HPLC). Furthermore, the antioxidant activities of the extracts were evaluated by using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and nitric oxide assays. RESULTS: HPLC analyses showed that the gallic acid, pyrogallol, apigenin and rutin were the main phenolic and flavonoid compounds in all varieties of rice. In addition, the methanolic extracts of Hashemi and Ali Kazemi varieties showed the highest amounts of phenolic and flavonoid contents, respectively. Rice straw and husk of Iranian varieties showed considerable antioxidant activity and Hashemi indicated significantly (P < 0.01) higher DPPH and nitric oxide free radical scavenging activities when compared to the other varieties. CONCLUSION: The present study revealed that rice straw and seed husk of Iranian varieties shows high antioxidant activities and they contain various types of phenolic and flavonoid compounds that could be use in food and medical industries. SN - 1097-0010 UR - https://www.unboundmedicine.com/medline/citation/24415452/Identification_and_quantification_of_phenolic_and_flavonoid_components_in_straw_and_seed_husk_of_some_rice_varieties__Oryza_sativa_L___and_their_antioxidant_properties_ L2 - https://doi.org/10.1002/jsfa.6567 DB - PRIME DP - Unbound Medicine ER -