Analytical grade methanol and ethanol were obtained from RCI Labscan (Bangkok, Thailand). DPPH, phosphoric acid, LPS, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), 2,4,6-tris (2-pyridyl)-s-triazine (TPTZ), dimethyl sulfoxide (DMSO), macrophage cells (RAW264.7), fe...