Evaluation of antimicrobial activity, antioxidant potential, total phenolic and flavonoid contents of nettle extract: A laboratory study
The aim of this study was to isolate ethanolic extract from Urtica dioica leaves, and determination of its antioxidant and antimicrobial properties. On this point, the ethanolic extract was obtained by the maceration method and its total phenol content, total flavonoid content, antioxidant activity (DPPH and ABTS radical scavenging activity) and antimicrobial effect (disk diffusion agar, well diffusion agar, minimum inhibitory concentration, and minimum bactericidal concentration) against Salmonella typhi, Escherichia coli, Bacillus cereus, and Listeria innocua, were determined. The extract contained 65.42 ± 0.49 mg GAE/g total phenol content and 22.19 ± 0.30 mg QE/g total flavonoid content. The ethanolic extract of U. dioica leaves was able to scavenge DPPH (61.90 ± 0.54%) and ABTS (70.10 ± 0.47%) free radicals. The antimicrobial effect results showed that Gram-positive bacteria (Bacillus cereus and Listeria innocua) were more sensitive than Gram-negative ones (Salmonella typhi and Escherichia coli) toward the ethanolic extract. Generally, U. dioica leaves’ ethanolic extract is able to be used as a natural bioactive compound to improve shelf-life of food products.
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
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