Journal
FOOD CHEMISTRY
Volume 367, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.130759
Keywords
Sambucus ebulus; Hydroxycinnamic acids; Flavonol glucosides; Anthocyanins; Catechins; Stilbenes
Funding
- Bulgarian National Research Fund [KP-06-OPR-03/13]
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This study conducted phytochemical analysis of tea from Sambucus ebulus fruits, revealing the presence of hydroxycinnamic acids, flavonol glucosides, stilbenes, and proanthocyanidin mono-, di- and trimers. The tea was found to contain high levels of 5-caffeoylquinic acid and epicatechin, indicating potential antioxidant properties.
The purpose of this study was to perform phytochemical analysis of tea from Sambucus ebulus fruits concerning hydroxycinnamic acids, flavonol glucosides, stilbenes and proanthocyanidin mono-, di- and trimers content. In total, 33 compounds were identified and quantified using UPLC-DAD-ESI/MS/MS system and the results are presented in mg/g dry weight (DW). Among analyzed hydroxycinnamic acids, 5-Caffeoylquinic acid (114.17 mg/g) was most abundant, followed by 3-p-Coumaroylquinic acid (50.33 mg/g) and 3-p-Feruloylquinic acid, p-Coumaric acid glucoside and 4-p-Coumaroylquinic acid (31.36 mg/g, 29.78 mg/g and 27.70 mg/g, respectively). Flavonol glucosides were represented predominantly by Quercetin-3-O-galactoside, Quercetin-3-O-rhamnosyl-galactoside Quercetin-3-O-glucoside and Quercetin-3-O-rhamnosyl-glucoside (3.68 mg/g, 3.22 mg/g, 2.87 mg/g and 2.56 mg/g, respectively). trans-Resveratrol-3-O-glucoside, epicatechin (40.62 mg/g) and proanthocyanidin di- and -trimers (19.90 mg/g - 31.42 mg/g) also were present in the tea. ABTS cation decolorization assay revealed 1.248 mM UAE activity and the percent of DPPH radical scavenging was 14.25%, corresponding to 39.07 mu M Trolox equivalents.
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