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Phenolics from strawberry cv. Falandi and their antioxidant and α-glucosidase inhibitory activities.
- Source :
-
Food Chemistry . Mar2016, Vol. 194, p857-863. 7p. - Publication Year :
- 2016
-
Abstract
- Three new phenolic glucosides, falandiosides A ( 1 ), B ( 2 ), and C ( 6 ) were isolated from strawberry ( Fragaria × ananassa Duch.) cv. Falandi fruit, together with three flavone glucuronides ( 3 – 5 ), eleven lignan glycosides ( 12 – 22 ), and five others. Their structures were determined by spectroscopic methods. All the known phenolics were reported from strawberry for the first time. They were evaluated for antioxidant and α-glucosidase inhibitory activities. Three new and fifteen known phenolics showed potent 2,2′-azinobis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical cation scavenging activity with IC 50 values of 22.50–4.28 μM in comparison to l -ascorbic acid (14.21 μM). Quercetin 3-(6-methylglucuronide) ( 4 ), (+)-isolariciresinol 9′-glucoside ( 12 ), and (−)-isolariciresinol 9′-glucoside ( 13 ) were active in scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals. Moreover, compounds 12 and 13 had moderate ferric reducing antioxidant power (FRAP) values. Further, two new and seven known phenolics exhibited more potent α-glucosidase inhibitory activity with IC 50 values of 537.43–25.39 μM than acarbose (619.94 μM). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03088146
- Volume :
- 194
- Database :
- Academic Search Index
- Journal :
- Food Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 110304113
- Full Text :
- https://doi.org/10.1016/j.foodchem.2015.08.091