title: Relationships between antioxidant compounds and antioxidant activities of tartary buckwheat during germination.
abstract: Relationships of changes between major non-enzymatic antioxidant compounds and antioxidant capacities of tartary buckwheat during germination were evaluated by means of correlation analysis and principal component analysis in this paper. The changes of antioxidant compounds, including vitamin C, vitamin E, flavonoids, carotenoids, and chlorophyll, and antioxidant activities were detected. A good accumulation in the content of vitamin C (0.71 mg/g), total flavonoids (19.53 mg rutin/g), and rutin (11.34 mg/g) was found after 7-day germination, but germination decreased the vitamin E activity. Germination improved the activities of buckwheat extracts to scavenge DPPH, ABTS, and superoxide free radicals by 107, 144, and 88 %, respectively. Furthermore, the correlation and principal component analysis showed that the vitamin C, total flavonoids, and rutin contents were closely related positively with free radicals scavenging properties, indicating that the compounds which play a key role in the elevated antioxidant activities during germination consisted of vitamin C, total flavonoids, and rutin, but not vitamin E and quercetin.
authors.affiliation: School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 2001418 People's Republic of China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Zhou
authors.affiliation: School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 2001418 People's Republic of China.
authors.forename: Tingfeng
authors.initials: T
authors.lastname: Hao
authors.affiliation: School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 2001418 People's Republic of China.
authors.forename: Yiming
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 2001418 People's Republic of China.
authors.forename: Wen
authors.initials: W
authors.lastname: Tang
authors.affiliation: School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 2001418 People's Republic of China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Xiao
authors.affiliation: School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 2001418 People's Republic of China.
authors.forename: Xiaoxiao
authors.initials: X
authors.lastname: Meng
authors.affiliation: School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 2001418 People's Republic of China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Fang
keywords: Antioxidant activity; Germination; Principal component analysis; Tartary buckwheat
references.citation: Biosci Biotechnol Biochem. 2008 Dec;72(12):3148-57
references.pmid: 19060399
references.citation: Plant Cell. 2004 Jun;16(6):1419-32
references.pmid: 15155886
references.citation: Nahrung. 2003 Apr;47(2):126-31
references.pmid: 12744292
references.citation: Biosci Biotechnol Biochem. 2007 Feb;71(2):579-82
references.pmid: 17284830
references.citation: J Food Sci Technol. 2014 May;51(5):845-54
references.pmid: 24803690
references.citation: J Agric Food Chem. 2008 Jan 9;56(1):173-8
references.pmid: 18072736
references.citation: Plant Physiol. 1984 Mar;74(3):475-80
references.pmid: 16663447
references.citation: Phytochem Anal. 2011 Mar-Apr;22(2):172-80
references.pmid: 20848396
references.citation: J Agric Food Chem. 2003 Oct 22;51(22):6452-5
references.pmid: 14558761
references.citation: Phytochemistry. 2000 Nov;55(6):481-504
references.pmid: 11130659
references.citation: J Agric Food Chem. 2008 Feb 27;56(4):1216-23
references.pmid: 18217700
references.citation: Int J Biochem Cell Biol. 2010 Oct;42(10):1634-50
references.pmid: 20601089
references.citation: Food Chem. 2012 Dec 1;135(3):1065-70
references.pmid: 22953825
references.citation: J Agric Food Chem. 2007 Jul 25;55(15):6314-8
references.pmid: 17580874
references.citation: Bioresour Technol. 2009 Feb;100(4):1643-7
references.pmid: 18976903