Antibacterial and antioxidant activities of Physalis peruviana and Hyphaene thebaica extracts

Abstract

Ethanol extract of Physalis peruviana and water extract of Hyphaene thebaica were tested for their inhibitory effects on eight bacterial strains (Escherichia coli, Proteus mirabilis, Salmonella typhimurium, Salmonella entrica , Shigella dysenteriae , Bacillus cereus, Bacillus licheniformis and Staphylococcus aureus) by using well diffusion technique. The study demonstrated that Staph. aureus was the most sensitive gram-positive strain and E. coli was the most sensitive gram-negative strain to ethanol extract of Physalis peruvianae and water extract of Hyphaene thebaica. The inhibition zone diameters near to the synthetic antibiotic (ciprofloxacin). The antioxidant activity of the both extracts was also investigated by using 2, 2-diphenyl, 1-picrylhydrazyl (DPPH) scavenging activity and ascorbic acid as control. The results showed that the scavenging effects of both extracts on DPPH radicals increased by increasing the concentration. The ethanolic extract of Physalis peruvianae and water extract of Hyphaene thebaica were a promising source of natural antimicrobial agent, antioxidant agent and as natural preservative of processed food.

Role of Goldenberry (Fruits with Husk) Extract in Ameliorating the Architecture and Osmotic Fragility of Red Blood Cells in Obese Rats

“…Our findings indicated that obese rats subjected to GB developed a decrement in the rheological alterations compared to untreated obese rats. The amelioration in rheological changes can be referred to as the direct effect of GB as an antioxidant elicited by lowering plasma TBARS and/or enhancing plasma GSH and SOD [44][45][46]. Ascorbic acid and phenolics found in GB fruit may participate in the high capacity of antioxidant level and high free radicals scavenging agent.…”

Screening of Methanolic Extract for Antimicrobial Activity of Hyphaene thebaica L. Fruit Pulp from Sudanese Folklore

“…Auwal et al [17] stated that the crude pericarp extract of Doum fruit exhibited broad-spectrum antibacterial activity Staphylococcus aureus, Streptococcus pyogenes, Salmonella typhi, Escherichia coli, and Shigella dysenteriae. Abd-ELmageed et al [18] mentioned that the ethanol extract of Doum fruit represented good different degrees of antibacterial activity against Escherichia coli, Salmonella typhimurium, Proteus mirabilis, Salmonella entrica , Shigella dysenteriae , Staphylococcus aureus, Bacillus cereus, and Bacillus licheniformis. On the other side, the current study disagrees with the results of Mohamed et al [19] which showed that methanolic extract of Doum has antifungal potential in addition to its antibacterial activity.…”

“…Then, serial dilutions were transferred, one by one, to the respective wells. Plated were then incubated at 35 o C for 18 or up to 48 hours (for fungi). The MIC was considered as the lowest concentration which inhibited the growth of the The results of this analysis are listed as mean ± SEM (Standard Error of Means).…”