Abstract
Natural products from plants are pulling in more interest in exploration due to their therapeutic properties like, mainly because of the drug-resistance in microbes against synthetic drugs. Thus, the present study was designed to assess the antimicrobial and antioxidant actions of some Agro-waste (garlic, ginger, onion, potato) peel extracts. Ginger peel extracts exhibited the highest FRAP (0.273±0.044 mm Fe2+ Eq/g dry weight) while garlic peel extracts exhibited the highest TAC (0.47±0.0452 mm AAE/g dry weight) values among all selections. The antimicrobial activity of the peels was evaluated against different pathogenic bacterial and fungal strains i.e.; Escherichia coli, Bacillus megaterium, Bacillus cereus, Staphylococcus aureus, Colletotrichum falcatum, Fusarium moniliforme, and Rhizoctonia solani. Among all extracts, ginger peel extracts exhibited maximum inhibition against all bacterial strains, while onion peel extracts exhibited zero inhibition against any bacterial strains. All extracts exhibited maximum inhibition against Staphylococcus aureus except onion peel extracts. Positive inhibition against all fungal strains was observed for all samples, with maximum inhibition against Colletotrichum falcatum. The outcomes of the study, therefore reveal that Agro-wastes have a powerful antimicrobial and antioxidant potency and thus can be used for many medicinal purposes, which will likewise be helpful in waste management and environmental safety.
Highlights
Vegetable and fruit peel was often thrown aside as waste are utilized generally as fertilizer or livestock feed
The FC reagent method was employed in this study to evaluate the total phenolic content (TPC) of agro-waste i.e., potato, garlic, ginger, and onion peel extracts
The results shown in table II express the values of antioxidant activity exhibited in all extracts μM Trolox equivalent (TE)/g fresh mass
Summary
Vegetable and fruit peel was often thrown aside as waste (agro-wastes) are utilized generally as fertilizer or livestock feed. During the processing of food in industries and household usage, a large amount of agro-wastes is produced. These wastes possess a serious hazard to the environment as they are highly susceptible to microbial spoilage. They need to be safely disposed of or utilized to get environment beneficial aspects. Many technologies for optimal utilization of agro-wastes in food and non-food materials are established Different scientific studies reveal that different plant parts (pods, fruit rinds, seeds, hulls, latex, fruits, flowers, stalks, leaves, pees, barks, stems, roots etc.) possess many phytochemicals, which exhibit different biological activities (Aref et al 2010)
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