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Food Chem. 2016 Mar 1;194:1254-9. doi: 10.1016/j.foodchem.2015.08.129. Epub 2015 Aug 31.

NMR-based identification of the phenolic profile of fruits of Lycium barbarum (goji berries). Isolation and structural determination of a novel N-feruloyl tyramine dimer as the most abundant antioxidant polyphenol of goji berries.

Author information

1
Department of Pharmacy, University of Napoli "Federico II", Via D. Montesano 49, 80131 Napoli, Italy. Electronic address: forino@unina.it.
2
Department of Pharmacy, University of Napoli "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.

Abstract

Biological properties of fruits of Lycium barbarum (goji berries) have been ascribed to their high content of nutrients and phenolics. Comprehensive studies aimed at unambiguously identifying the phenolic components in goji berries are still lacking. In this paper, we report on the isolation and NMR-based identification of the major phenolics in commercially available goji berries. Together with already known phenolics, including caffeic acid, p-coumaric acid, rutin, scopoletin, N-trans-feruloyl tyramine, and N-cis-feruloyl tyramine, an unreported N-feruloyl tyramine dimer was characterized as the most abundant polyphenol isolated from the berries. Usually divalent molecules show enhanced biological activities than their corresponding monomers.

KEYWORDS:

Antioxidant compounds; Caffeic acid (PubChemCID: 689043); Goji berry; Lycium barbarum; N-cis-feruloyl tyramine (PubChemCID: 6440659); N-feruloyl tyramine dimer; N-trans-feruloyl tyramine (PubChemCID: 5280537); Phenolics; Rutin (PubChemCID: 5280805); Scopoletin (PubChemCID: 5280460); p-Coumaric acid (PubChemCID: 637542)

PMID:
26471679
DOI:
10.1016/j.foodchem.2015.08.129
[Indexed for MEDLINE]

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