Total Antioxidant Capacity and Content of Phenolic Compounds in Wild Strawberries (Fragaria vesca) Collected in Bolivia

Comparison of nutritional and nutraceutical properties in cultivated fruits of Fragaria vesca L. produced in Italy

“…Conversely, no significant effect of altitude was observed on secondary metabolites and radical scavenging activity. In this regard, it should be noted that Peñarrieta et al (2009) recently investigated the role of the altitude in the total polyphenolic content of wild F. vesca strawberries, highlighting an erratic trend of the obtained data. Our data substantially confirmed the findings of Peñarrieta et al, even if a genotype effect could also be hypothesized for explaining their erratic results, since no information on the variety was available in their study.…”

“…The most abundant monomer was pelargonidin-3-glucoside (22.1-43.7%), followed by ellagic acid (15.5-36.3%), cyanidin-3-o-galactopiranoside (8.3-28.8%), cyanidin-3-glucoside (6.7-15.2%), cyanidin (4.4-10.3%), pelargonidin-3-malonyl-3-glucoside (1.3-6.4%) and peonidin-3-glucoside (1.8-4.1%); in this regard, it should be noted that, among the most representative monomers of F. vesca, only ellagic acid had previously been identified (Peñarrieta et al, 2009).…”

“…Antioxidant activity of F. vesca was also investigated by JablonskaFood Research International 44 (2011) 1209-1216 Abbreviations: AA, L-ascorbic; DHAA, dehydroascorbic; HDTMAB, Hexadecyltrimethylammonium bromide; OPDA, 1,2-phenilendiamine; F-C, Folin-Ciocalteu; DPPH, 2,2-diphenyl-1-picrylhydrazyl; PTFE, Polytetrafluoroethylene; DAD, diode array detector; UFLC, Ultra Fast Liquid Chromatography; RSA, Radical Scavenging Activity; TIS, Turbo Ion Spray. Rys, Zalewska-Korona, and Kalbarczyk (2009) together with ascorbic acid and total polyphenols; moreover, a partial characterization of the polyphenolic fraction was tentatively carried out by Peñarrieta, Alvarado, Bergenståhl, and Ákesson (2009).…”

Changes in phenolic antioxidants during chuño production (traditional Andean freeze and sun-dried potato)

“…Prior to the HPLC analysis, the extracts were hydrolysed by refluxing the water-soluble extracts in 1.5 M HCl/50% methanol for 2 h at 90 8C after the addition of baicalein as internal standard (Peñ arrieta et al, 2008(Peñ arrieta et al, , 2009.…”

Resveratrol, phenolic antioxidants, and saccharides in South American red wines

“…Folin-Ciocalteu reagent was used for the determination of TPH, as well as the total flavonoids (TF) content as described by Peñarrieta et al 16 The results are expressed in mmol or mg gallic acid equivalents per liter of wine (mmol or mg GAE/L), and in mmol catechin equivalents per liter of wine, respectively.…”