Evaluation of antimicrobial and antioxidant efficacy of hydro ethanol extract of peels of Kufri Chandramukhi, Kufri Chipsona‐3, and Kufri Jyoti potato varieties alone and in combination

Abstract The potato processing industries generate substantial quantities of phenolic‐rich potato peels as waste by‐products that could be valuable natural sources of antimicrobials and antioxidants in food industry. The present study is aimed to evaluate antimicrobial and antioxidant potential of hydro ethanol extract of peels of three commonly used potato varieties ( Kufri Chandramukhi , Kufri Chipsona‐3 , and Kufri Jyoti ) alone and in combination along with cytotoxicity evaluation. At their individual effect, antimicrobial and antioxidant potential of potato peel extracts were found to be in the following decreasing order: Kufri Chisona ‐3 > Kufri Jyoti > Kufri Chandramukhi . In combination, peel extracts of Kufri Chipsona‐3 / Kufri Jyoti blend demonstrated synergistic antimicrobial and antioxidant interactions whereas other tested combinations showed additive antimicrobial and antioxidant effects. The peel extracts of Kufri Chipsona ‐3/ Kufri Jyoti blend did not show any cytotoxic effect up to 1000 μg/ml concentration. Besides, a high positive correlation between total phenolic contents and antimicrobial activity of potato peel extracts was observed. The results provide evidence that hydro ethanol extract of potato peels of Kufri Chipsona ‐3/ Kufri Jyoti blend may help in designing a more potent safe and effective novel natural antimicrobial and antioxidant agents in food and pharmaceutical industries.