Back to Search
Start Over
Non-flavonoid phenolics from Averrhoa carambola fresh fruit.
- Source :
- Journal of Functional Foods; May2017, Vol. 32, p419-425, 7p
- Publication Year :
- 2017
-
Abstract
- The fruit of Averrhoa carambola L. (Oxalidaceae) is a commercially important fruit. Our study on the chemical constituents present in the fresh sweet fruit led to the isolation of eleven non-flavonoid phenolic compounds. Their structures were identified by analyses of spectroscopic data. They were two new alkyl phenol diglucosides, carambolasides K ( 1 ) and L ( 2 ), four phenylpropanoids, (+)-isolariciresinol 9- O -β- d -glucoside ( 3 ), (+)-lyoniresinol 9- O -β- d -glucoside ( 4 ), (−)-lyoniresinol 9- O -β- d -glucoside ( 5 ), and 1- O -feruloyl-β- d -glucose ( 6 ), three benzoic acids, protocatechuic acid ( 7 ), 1- O -vanilloyl-β- d -glucose ( 8 ), and tecomin ( 9 ), a simple phenol, koaburaside ( 10 ), and a naphthoquinone, (+)-cryptosporin ( 11 ). All of them were reported from A. carambola fruit for the first time. Compounds 1 – 8 and 10 showed 2,2′-azinobis-(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radical cation scavenging activity comparable to l -ascorbic acid, while compounds 3 , 5 , and 7 exhibited potent ferric reducing antioxidant power (FRAP). In addition, compounds 6 and 11 demonstrated weak porcine pancreatic lipase inhibitory activity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17564646
- Volume :
- 32
- Database :
- Supplemental Index
- Journal :
- Journal of Functional Foods
- Publication Type :
- Academic Journal
- Accession number :
- 122371326
- Full Text :
- https://doi.org/10.1016/j.jff.2017.03.025