Chemical analysis and antioxidant properties of foxtail millet bran extracts

Songklanakarin Journal of Science and Technology (SJST). 2011;33(5):509-515

 

Journal Homepage

Journal Title: Songklanakarin Journal of Science and Technology (SJST)

ISSN: 0125-3395 (Print)

Publisher: Prince of Songkla University

Society/Institution: Prince of Songkla University, Research and Development Office

LCC Subject Category: Science: Science (General) | Technology: Technology (General)

Country of publisher: Thailand

Language of fulltext: English

Full-text formats available: PDF

 

AUTHORS

Guo-Wei Le
Issoufou Amadou
Tidjani Amza
Yong-Hui Shi

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 25 weeks

 

Abstract | Full Text

The aim of this research was to extract phenolic compounds and assess the antioxidant potential of defatted foxtailmillet bran (DFMB) extracts. Distilled water, 30%, 50%, and 70% ethanol were used as solvent for extraction. The proximatecomposition, fatty acid analysis, total phenolic content and extraction yield were carried out. The antioxidant efficacies ofDFMB extract were tested using 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2’-azinobis-3-ethylbenzothiazoline-6-sulfonic acid(ABTS), superoxide radical and reducing power. The highest inhibitory concentration (IC50) values scavenging on DPPH,ABTS and superoxide radicals were in the range of 0.131±0.002, 0.795±0.003, and 0.158±0.009 mg/ml, for distilled water, and 30and 50% ethanol extracts respectively. The reducing power increased with increase of sample concentration. Total phenoliccontent ranged from 21.49±3.26 to 29.39±1.36 gallic acid equivalent (GAE)/100 g extract. The phenolic content and antioxidantactivity in DFMB extracts were significantly correlated (p<0.05). These results indicated that 50% ethanol extract fromDFMB appeared to be the most promoting phenolic compound with substantial antioxidant activity.