Evaluation of antioxidant activity of pomegranate peel powder extract

Abstract

Domestic and foreign scientists are constantly working to find natural antioxidants that prove to consumers that they are safer and healthier. Various plant materials, including various processed fruits and vegetables, are valuable sources of antioxidants. These compounds include phenolic compounds, which can measure antioxidant activity against radicals and inhibit the oxidation of lipids and proteins. Leather ensures that the product’s by-products also provide a source of polyphenolic compounds that may provide an alternative to synthetic antioxidants. We have researched obtaining extracts from powdered pomegranate casings and assessing their antioxidant activity. A 40% aqueous ethanol and distilled water solution are used as extractants. Identification methods by UV spectroscopy have shown that the predominant components in certain extracts are phenols and phenolic acids, including gallic acid, as well as flavonoids and tannins, such as catechins and punicalagin. The obtained extracts showed scavenger activity towards DPPH• and ABTS•+ radicals. At the same time, the antioxidant activity of the alcoholic extract against DPPH• was 3.6% higher than that of the aqueous extract. The activity of pomegranate peel powder extract towards the ABTS•+ radical cation did not depend on the nature of the solvent. The experimental data obtained allow us to consider extracts of powdered pomegranate casings as alternatives to synthetic antioxidants in the technology of meat and meat products.