Functional constituents and antioxidant activities of eight Chinese native goji genotypes. (1st June 2016)

• Record Type: Journal Article
• Authors: Zhang, Qiuyun; Chen, Weiwei; Zhao, Jianhua; Xi, Wanpeng
• Is Part Of: Food chemistry. Volume 200(2016)
• Page Start: 230
• Page End: 236
• Publication Date: 2016-06-01
• Subjects: TAA total antioxidant activities -- FCs functional components -- DPPH 2, 2-diphenyl-1-picrylhydrazyl -- ABTS 2, 2′-azino-bis(3-ethylbenzthiozoline-6)-sulfonic acid -- FRAP ferric reducing/antioxidant power -- TSS total soluble solid -- TA titratable acid -- TP total phenolic -- TF total flavonoid -- TC total carotenoid -- LBP Lycium barbarum polysaccharides -- AAPH 2, 2′-azobis(2-(2-amidinopropane)dihydrochloride -- TPTZ 2, 4, 6-tris(2-pyridyl)-s-triazine -- FW fresh weight -- GAE gallic acid equivalents -- RE rutin equivalents -- βCE β-carotene equivalents -- TE trolox equivalents -- TPA total phenolic acid; Goji -- Polyphenolic -- Carotenoids -- Polysaccharides -- Antioxidant activity; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2016.01.046
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Ningxia goji presented richer FCs and higher TAA than other genotypes tested. Ningxia goji berries are excellent source of antioxidants for human nutrition. LBPs are the main contributor to the TAA for goji berry. Abstract: We quantified the levels of polyphenols, carotenoids and polysaccharides in fruits of the eight Chinese native goji genotypes, antioxidant activities of these fruit extracts were also evaluated by DPPH, ABTS and FRAP methods. Quercetin-rhamno-di-hexoside (435–1065 μg/g) and quercetin-3-O-rutinoside (159–629 μg/g) were found to be the predominant flavonoids. Chlorogenic acid was the most abundant phenolic acid (113–526 μg/g), while zeaxanthin (17–9306 μg/g) was the major carotenoid. The total antioxidant activities (TAA) of the berry extracts were significantly correlated with the total polysaccharide and phenolic contents, but not with total carotenoid (TC) levels. Overall, fruits of the Ningxia goji ( Lycium barbarum L.) genotypes, DM (Damaye), NJ1 (Ningji No.1), BH (Baihua) and NH (Ningxiahuangguo) were not only rich in polyphenols, carotenoids and polysaccharides, but had significantly higher TAA than those of the other genotypes, suggesting that they represent an excellent source of antioxidants for human nutrition.