Phenolic Compounds of Potato Peel Extracts: Their Antioxidant Activity and Protection against Human Enteric Viruses

Abstract

Potato peels (PP) contain several bioactive compounds. These compounds are known to provide human health benefits, including antioxidant and antimicrobial properties. In addition, these compounds could have effects on human enteric viruses that have not yet been reported. The objective of the present study was to evaluate the phenolic composition, antioxidant properties in the acidified ethanol extract (AEE) and water extract of PP, and the antiviral effects on the inhibition of Av-05 and MS2 bacteriophages, which were used as human enteric viral surrogates. The AEE showed the highest phenolic content and antioxidant activity. Chlorogenic and caffeic acids were the major phenolic acids. In vitro analysis indicated that PP had a strong antioxidant activity. A 3 h incubation with AEE at a concentration of 5 mg/ml was needed to reduce the PFU/ml (plaque-forming unit per unit volume) of Av-05 and MS2 by 2.8 and 3.9 log₁₀, respectively, in a dose-dependent manner. Our data suggest that PP has potential to be a source of natural antioxidants against enteric viruses.

Investigation of different interactions between Staphylococcus aureus phages and pomegranate peel, grape seed, and black cumin extracts

“…In another study, different concentrations of cranberry juice and cranberry proanthocyanidins were found to reduce titers of MS2 and phiX‐174 bacteriophages (Su, Howell, & D'Souza, ). Similarly, it was found that potato peel extract had an inhibitory effect on Av‐05 and MS2 bacteriophages (Silva‐BeltrÁn et al, ). It has also been demonstrated antiviral effect of P, GS, and NS in several publications (Salem & Hossain, ; X. Su & D'Souza, ; Xiaowei Su, Sangster, & D'Souza, ; Yesuf, ) but the studies focusing the interactions between these extracts and phages are quite limited.…”

“…Similarly, it was found that potato peel extract had an inhibitory effect on Av-05 and MS2 bacteriophages (Silva-Beltr An et al, 2017). It has also been demonstrated antiviral effect of P, GS, and NS in several publications (Salem & Hossain, 2000;Xiaowei Su, Sangster, & D'Souza, 2011;Yesuf, 2013) but the studies focusing the interactions between these extracts and phages are quite limited.…”

Acrylamide Content of Experimental Flatbreads Prepared from Potato, Quinoa, and Wheat Flours with Added Fruit and Vegetable Peels and Mushroom Powders

“…Adding 10% potato peel powder resulted in a decrease to 385 µg/kg, although the result was not significant. Potato peels are reported to have numerous health benefits, including anti-obesity [12], anti-protozoan [13], and antiviral properties [43]. These properties seem to be associated with peel phenolic compounds and glycoalkaloids [44].…”

Fate of Residual Pesticides in Fruit and Vegetable Waste (FVW) Processing

“…The phenolic compounds, antioxidant and antiviral activities of extracts were evaluated in dried potato peel (dried at 45 °C for 24 h and then powdered). Absolute ethanol with 5% acetic acid (95:5 ratio) was used as an extraction solvent for 72 h, and then the samples were filtered and concentrated by freeze-drying [ 101 ].…”