Antioxidant and Elastase, Tyrosinase, α-Glucosidase Inhibitory Effects of Five Types of Mint Extracts

Abstract

Purpose: This study evaluated the biological activity of five types of mints (Peppermint, Spearmint, Chocomint, Applemint, Pineapplemint).Methods: Five types of mints were extracted with an ethanol solvent to compare the total polyphenol and total flavonoid content, scavenging activities of DPPH and ABTS radical, SOD-like activity, and inhibitory effects of elastase, tyrosinase, and α-glucosidase.Results: All five types of mint extracts were confirmed to be effective significantly in concentration. The total polyphenol content was found to be effective in the order of peppermint>spearmint>chocomint>pineapplemint>applemint, and the total flavonoid content was found to be effective in the order of peppermint> chocomint>spearmint>pineapplemint>applemint. The DPPH radical scavenging activity was found to be in the order of peppermint>spearmint>chocomint> pineapplemint>applemint, and the ABTS radical scavenging activity was found to be in the order of peppermint>chocomint>spearmint>pineapplemint>applemi nt. The SOD-like activity was found to be in the order of peppermint>chocomint> spearmint> pineapplemint>applemint. The inhibitory effects of elastase, tyrosinase, α-glucosidase were found to be in the order of peppermint>spearmint>chocomint> pineapplemint>applemint.Conclusion: As above results, all five types of mint extracts were verified to be effective significantly in concentration. In particular, peppermint indicated the highest total polyphenol, total flavonoid, DDPH and ABTS radical scavenging activity, and SOD-like activity, while chocomint displayed the highest tyrosine, elastase, and α-glucosidase inhibitory effects.