Reference

Phytochemical evaluation of some cowberry and bearberry samples from the Tomsk Region (USSR)

Phytochemical evaluation of some cowberry and bearberry samples from the Tomsk Region (USSR). Doshchinskaya, N. V.; Kolesnikova, N. S. (USSR). Rastit. Resursy Yuzh. Sib., ikh Ratsional'n. Ispol'z. i Okhrana, Tomsk, 65-8 From: Ref. Zh., Rastenievod. There are some commonly used reagents like 497-76-7 in this article. 1983, Abstr. No. 1055671(Russian) 1982. DOCUMENT TYPE: Journal CA Section: 11 (Plant Biochemistry) Title only translated. .

Quantitative determination of biologically active constituents in medicinal plant crude extracts by thin-layer chromatography-densitometry

Quantitative determination of biologically active constituents in medicinal plant crude extracts by thin-layer chromatography-densitometry. I. Aesculus hippocastaneum L.Several substances are used for example 524-30-1 and 497-76-7 which are their cas registry numbers., Arctostaphyllos uva-ursi Spreng, Fraxinus excelsior L., Gentiana lutea L., Glycyrrhiza glabra L., Hamamelis virginiana L., Hypericum perforatum L., Olea europea L., Salix alba L. and Silybum marianum Gaertn. Vanhaelen, M.; Vanhaelen-Fastre, R. (Pharm. Inst., Free Univ. Brussels, Brussels B-1050, Belg.). J. Chromatogr., 281, 263-71 (English) 1983. CODEN: JOCRAM. ISSN: 0021-9673. DOCUMENT TYPE: Journal CA Section: 64 (Pharmaceutical Analysis) TLC-densitometry was used to det. the biol. active or characteristic components of exts. of 10 medicinal plants. The plant, component, mobile phase, plate stationary phase if other than conventional silica gel 60 or silica gel 60F254, and wavelength for detection were: Aesculus hippocastaneum, aescin [6805-41-0], 1,2-dichloroethane-EtOH-MeOH-H2O (:) 530 nm (spraying with 1% vanillin and 5% H2SO4 in alc.); Arctostaphyllos uva-ursi, arbutin [497-76-7], EtOAc-MeOH-H2O (:13), 225 nm; Fraxinus excelsior, fraxin [524-30-1], EtOAc-EtCOMe-H2O-HCO2H (5:3:2:1), 365 nm fluorometry, excitation; Gentiana lutea, gentiopicrin [20831-76-9], 1,2-dichloroethane-MeOH-H2O (:1), 280 nm; Glycyrrhiza glabra, glyrrhizic acid [1405-86-3] (as NH4 salt), CH2Cl2-EtOH-MeOH-25% NH4OH (:), 258 nm; Hamamelis virginiana, gallic acid [149-91-7], CHCl3-EtOH-HCO2H (5:4:1), 300 nm; Hypericum perforatum hypericin [548-04-9] and pseudohypericin [55954-61-5], MeCN on RP-8 high-performance plates, 313 nm fluorometry, excitation; Olea europea, oleuropein [32619-42-4], CH2Cl2-MeOH-H2O (:1.5), 245 nm; Salix alba, salicum [138-52-3], CH2Cl2-MeOH-H2O (:1) on high-performance silica gel 60 plates, 270 nm; Silybum marianum, silybin [22888-70-6], PhMe-EtOAc-HCO2H (:5), 295 nm. Relative std. deviations were 3-3.5%, and recoveries were 95-99%. .