The antimicrobial and antioxidant properties of garagurt: Traditional Cornelian cherry (Cornus mas) marmalade

Abstract

The traditional cornelian cherry marmalade named as “Garagurt” usually consumed for nutritional purpose as well as health benefits. The objective of this study was determination of antimicrobial and antioxidant activity of cornelian cherry marmalade. Antioxidant activites of the sample as determined by ABTS, CUPRAC and DPPH assays were 8428±1206 mg TE/100 g, 1599±41.4 mg TE/100g and 773±206 mg TE/100g, respectively. The antimicrobial activity of the sample was determined by the disc diffusion method in minimum inhibitory concentration (MIC) against Listeria monocytogenes, Bacillus cereus, Staphylococcus aureus, Escherichia coli Escherichia coli O157:H7, Salmonella typhimurium, Pseudomonas fluorescens, Yersinia enterocolitica. The MIC values of garagurt (0.66 mg phenol compound/g) are ? 256 mg/mL for L. monocytogenes, S. aureus, Y. enterocolitica, E. coli and P. fluorescens when Gentamicin (10 µg) used as positive control. Total phenolic content, which is regarded as responsible of antimicrobial and antioxidant activity, was determined as 195±6.35 mg GAE/100 g in aqueous methanolic extract of garagurt. This product can also be used for its antimicrobial effect in order to increase shelf life of different foods.