Antioxidant and antimicrobial activities of mango peel and radish peel-a comparative investigation

Abstract

The present study investigated the antioxidant and antimicrobial activities of Bao mango and daikon radish peel (Thai variety) ethanolic extracts. The percentage extraction yield of radish peel was higher compared to the mango peel (p < 0.05). However, Mango peel extract (MPE) contained higher total phenolic content (TPC) than radish peel extract (RPE) (p < 0.05). Similar to the TPC value, antioxidant activities including DPPH radical scavenging activity, reducing power, and peroxidation inhibition were higher in the MPE, compared to the RPE, except for metal chelating activity. The antimicrobial analyses suggested that the MPE showed lower minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values compared to the RPE (p < 0.05) against Gram-positive and Gram-negative bacteria. High-performance liquid chromatography (HPLC) revealed that mangiferin was the major phenolic compound present in MPE, followed by 3, 4 dihydroxybenzoic acid. Therefore, MP could be used as a promising natural antioxidant and antimicrobial agent for food applications.

Phenolic content of Thai Bao mango peel and its in-vitro antioxidant, anti-cholinesterase, and antidiabetic activities

“…With the increasing agricultural production, the waste and by-products from fresh produce industries were also increased. These wastes or byproducts (peel, seed, must, and other products) accounted for 10–60 % of the fresh produce ( Koirala et al, 2024 ). The majority of these wastes are merely disposed of in municipal landfills, which pollute the environment and pose health risks.…”

“…In our previous study, we assessed the potential antioxidative and anti-bacterial activities of Bao mango peel. The mango peel waste extracts showed excellent antioxidant and antimicrobial activities due to phytochemicals such as mangiferin and other polyphenols ( Gondi et al, 2015 , Koirala et al, 2024 ). This study aimed to determine the in-vitro anti-diabetic and anti-AD properties of Bao mango peel extract powder.…”