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Abstract Title:

Blackberry (Rubus ulmifolius Schott): Chemical composition, phenolic compounds and antioxidant capacity in two edible stages.

Abstract Source:

Food Res Int. 2019 Aug ;122:627-634. Epub 2019 Jan 15. PMID: 31229121

Abstract Author(s):

Mayara Schulz, Siluana Katia Tischer Seraglio, Fabiana Della Betta, Priscila Nehring, Andressa Camargo Valese, Heitor Daguer, Luciano Valdemiro Gonzaga, Ana Carolina Oliveira Costa, Roseane Fett

Article Affiliation:

Mayara Schulz

Abstract:

The berries of the genus Rubus has been highlighted as important source of bioactive and health promoting constituents, however, information about chemical composition and antioxidant potential of the specie Rubus ulmifolius are still scarce. In this regard, this study aimed to assess the physicochemical characteristics, total monomeric anthocyanins (TMA), individual phenolics, minerals, sugars, and antioxidant properties of mature and fully mature R. ulmifolius. With the advance of maturation, changes in the physicochemical composition suggest pleasant characteristics for consumption especially in the fully mature stage. High levels of TMA and sugars (fructose and glucose) were also verified in the fully mature stage, as well as, expressive antioxidant potential, with values of 241.06 μM Fe gfor ferric reducing antioxidant power and 28.22 mg gallic acid equivalent gfor Folin-Ciocalteu reducing capacity (all expressed in dry matter, DM). In contrast, minerals (potassium, calcium, sodium) and most of the studied phenolic compounds showed the highest concentrations in mature fruits. Among the phenolics investigated, 26 compounds were identified and quercetin and isoquercitrin were the predominant phenolic compounds in the fruit. The results reinforce the nutritive and antioxidant potential of Rubus ulmifolius in both maturation stages studied.

Study Type : In Vitro Study

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