Phytochemical Profile and Bioactive Potential of Hampea rovirosae Standl.: Antioxidant, Antimicrobial, and Carbohydrate-Hydrolyzing Enzyme Inhibitory Activities
Abstract
Hampea rovirosae Standl. is traditionally used by local communities to treat infections, pain-related conditions, and to reduce blood sugar levels. In this investigation, we produced aqueous, ethanolic, and hydroethanolic extracts of H. rovirosae and assessed their antioxidant, antibacterial, and antihyperglycemic properties in addition to their phytochemical profiles and contents. The phytochemical characterization was performed through a targeted chromatographic and mass spectrometric analysis of phenolic compounds and the quantitation of total phenolic content (TPC), total flavonoid content (TFC), and total tannin content (TTC) by spectrometric assays. The antioxidant capacity was assessed using the DPPH, ABTS, and FRAP assays, and the antibacterial activity was determined by disk diffusion (DD) and minimum inhibitory concentration (MIC) methods. In addition, antihyperglycemic activity was evaluated by inhibiting α-amylase and α-glucosidase. Phytochemical analysis was performed using high-performance liquid chromatography coupled with mass spectrometry (HPLC-MS), employing a targeted analysis approach based on comparing retention times and fragmentation patterns with standards and databases. This analysis revealed a phytochemical profile dominated by phenolic compounds, with quercetin-3-glucoside (155,930.2), caffeic acid (134,399.1), catechin (98,408.8), procyanidin B2 (85,661.7), protocatechuic acid (83,824.3), and epicatechin (53,704.1) being the major metabolites. The…
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