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Abstract
This study explored the chemical constituents and bioactivities of cicada exuviae extracts from Cryptotympana mandarina. Gas chromatography–mass spectrometry (GC-MS) analysis identified 23 diverse compounds, including fatty acids and their esters, aromatic compounds, alkanes, and other constituents. Among these, aromatic compounds and fatty acids with their esters were predominant. In vitro assays revealed that the cicada exuviae extracts exhibited notable antioxidant activity by DPPH and ABTS radical scavenging with IC50 of 0.069-0.752 mg/mL. These extracts also displayed antidiabetic potential, inhibiting α-amylase and α-glucosidase with IC50 of 0.65-3.69 mg/mL. In addition, the cicada exuviae extracts displayed antimicrobial effects against the examined microorganisms with minimum inhibitory concentrations (MICs) ranging from 64 to 512 µg/mL. These findings highlight cicada exuviae extracts as a promising natural source of bioactive compounds with antioxidant, antidiabetic, and antimicrobial properties.
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