Open AccessAnalysis of free amino acids in different extracts of Orthosiphon stamineus leaves by high-performance liquid chromatography combined with solid-phase extraction
Author(s) -
Armaghan Shafaei,
Nor Hidayah Ab Halim,
Norhidayah Zakaria,
Zhari Ismail
Publication year - 2017
Publication title -
pharmacognosy magazine
Language(s) - English
Resource type - Journals
eISSN - 0976-4062
pISSN - 0973-1296
DOI - 10.4103/0973-1296.216337
Subject(s) - chromatography , high performance liquid chromatography , chromatography detector , derivatization , chemistry , polyphenol , methanol , lamiaceae , amino acid , traditional medicine , antioxidant , medicine , biochemistry , organic chemistry
Orthosiphon stamineus (OS) Benth is a medicinal plant and native in Southeast Asia. Previous studies have shown that OS leaves possess antioxidant, cytotoxic, diuretic, antihypertensive, and uricosuric effects. These beneficial effects have been attributed to the presence of primary and secondary metabolites such as polyphenols, amino acids, and flavonoids.