National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Foodborne illnesses and oxidative stress represent major global health challenges, prompting interest in natural alternatives to synthetic chemicals. This study evaluates and compares the antioxidant capacities and antimicrobial activities of various berry fruits, including blueberries, gooseberries, raspberries, blackberries, mulberries, Indian blackberries, and star gooseberries. The antioxidant activity was assessed using the DPPH radical scavenging assay, with extracts prepared at concentrations ranging from 100 to 500 µg/mL. Antimicrobial activity was tested against Bacillus cereus, Staphylococcus aureus, Salmonella typhimurium, pathogenic and normal flora Escherichia coli, and Lactobacillus spp. using the agar well diffusion method. Extracts from both fresh and dried berries were compared with positive controls (streptomycin and azithromycin) and negative controls (sterile distilled water and 20% DMSO). Fresh berry extracts displayed varying antioxidant activities, with blueberries showing the highest activity (75.78 µg/mL). Dried berry extracts generally exhibited enhanced antimicrobial effects, with dried raspberries and blackberries showing the most substantial inhibition zones. Notably, gooseberries demonstrated significant antimicrobial activity, particularly against Salmonella typhimurium (21 mm inhibition zone). These findings highlight the potent antioxidant and antimicrobial properties of both fresh and dried berry extracts, suggesting their potential as natural alternatives for food safety and therapeutic applications. Further research is needed to isolate specific bioactive compounds and explore their efficacy in diverse applications.
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