title: Determination of phenolic compounds and antioxidant activity in leaves from wild Rubus L. species.
abstract: Twenty-six different wild blackberry leaf samples were harvested from various localities throughout southeastern Poland. Leaf samples were assessed regarding their phenolic compound profiles and contents by LC/MS QTOF, and their antioxidant activity by ABTS and FRAP. Thirty-three phenolic compounds were detected (15 flavonols, 13 hydroxycinnamic acids, three ellagic acid derivatives and two flavones). Ellagic acid derivatives were the predominant compounds in the analyzed leaves, especially sanguiin H-6, ellagitannins, lambertianin C, and casuarinin. The content of phenolic compounds was significantly correlated with the antioxidant activity of the analyzed samples. The highest level of phenolic compounds was measured for R. perrobustus, R. wimmerianus, R. pedemontanus and R. grabowskii. The study showed that wild blackberry leaves can be considered a good source of antioxidant compounds. There is clear potential for the utilization of blackberry leaves as a food additive, medicinal source or herbal tea.
authors: Department of Fruit and Vegetable Processing, Wroclaw University of Environmental and Life Science, 37 Chełmońskiego Street, 51-630 Wroclaw, Poland. jan.oszmianski@up.wroc.pl.
authors: Jan
authors: J
authors: Oszmiański
authors: Department of Fruit and Vegetable Processing, Wroclaw University of Environmental and Life Science, 37 Chełmońskiego Street, 51-630 Wroclaw, Poland. aneta.wojdylo@up.wroc.pl.
authors: Aneta
authors: A
authors: Wojdyło
authors: Department of Fruit and Vegetable Processing, Wroclaw University of Environmental and Life Science, 37 Chełmońskiego Street, 51-630 Wroclaw, Poland. paulina.nowicka@up.wroc.pl.
authors: Paulina
authors: P
authors: Nowicka
authors: Department of Fruit and Vegetable Processing, Wroclaw University of Environmental and Life Science, 37 Chełmońskiego Street, 51-630 Wroclaw, Poland. miroslawa.teleszko@up.wroc.pl.
authors: Mirosława
authors: M
authors: Teleszko
authors: Faculty of Biology and Agriculture, University of Rzeszow, 4 Zelwerowicza Street, 35-601 Rzeszów, Poland. tomcebulak@gmail.com.
authors: Tomasz
authors: T
authors: Cebulak
authors: Faculty of Biology and Agriculture, University of Rzeszow, 4 Zelwerowicza Street, 35-601 Rzeszów, Poland. mwolanin@gmail.com.
authors: Mateusz
authors: M
authors: Wolanin
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D002853:Chromatography, Liquid; D013058:Mass Spectrometry; D010636:Phenols / Q000737:chemistry / Q000494:pharmacology*; D010936:Plant Extracts / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry; D065856:Rubus / Q000737:chemistry* / Q000145:classification
chemical_list: D000975:Antioxidants; D010636:Phenols; D010936:Plant Extracts