Title : Phytochemical screening and anti-microbial activity of methanolic and aqueous extract of pink cabbages and red grape
Abstract:
In this study, the phytochemical composition, antioxidant potential, and antimicrobial effects against Gram- positive bacteria, Gram-negative bacteria, and fungi in both aqueous and methanolic extracts of Brassica oleracea var. capitata (Pink Cabbages) and Red Grapes fruit belonging to the families: Brassicaceae and Vitaceae were determined. Methanolic extract of red Grapes exhibited high activity a giants Bacillus Subtilis and Staphylococus aureus. Additionally, it showed moderate and weak activity against Escherichia coli and fungi. Whereas methanolic extract of pink Cabbage exhibited high activity a giants Staphylococus aureus, moderate activity against Bacillus Subtilis. No activity was observed against Escherichia coli and fungi. Both aqueous and methanolic extract of red Grapes and Pink Cabbages are rich in alkaloids flavonoids, Tannins and Steroids. However, Saponins, coumarins and Terpenoids are absent. The approximate analysis of both Red Grape and Pink Cabbages demonstrated: The study assessed the moisture content, ether extract, crude protein, crude fiber, ash, and non-free extract in pink cabbages. It observed that the antioxidant activity of the methanolic extract from pink cabbages, determined through DPPH radical scavenging activity, surpassed that of the methanolic extract from red grapes. In contrast, antioxidant activity of methanolic extract red Grape when ferrous iron-chelating was used to determine their antioxidants activity.
