ArticleChemistry & biodiversity2026
Phytochemical Characterization and Biological Activity of Stachys pinardii Extracts.
Article in Chemistry & biodiversity, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The study investigated how solvent choice affects the extraction of bioactive phytochemicals from Stachys pinardii. Methanol and aqueous extracts of aerial parts were obtained using ultrasound-assisted extraction and analyzed for phytochemical content, antioxidant capacity, and enzyme inhibition. The methanol extract showed higher total phenolic (52.56 mg GAEs/g) and flavonoid contents (18.19 mg REs/g) than the aqueous extract (15.62 mg GAEs/g and 8.25 mg REs/g). Liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) analysis identified verbascoside and chlorogenic acid as major compounds in methanol, while aqueous extract was richer in caffeic acid and hydroxycinnamic derivatives. Despite lower phenolic content, the aqueous extract demonstrated stronger antioxidant activity across 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), cupric ion reducing antioxidant capacity (CUPRAC), and ferric reducing antioxidant power (FRAP) assays, with lower IC
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