QIU Qin1, ZHEN Han-shen1, XIAO Cong3, et al. Determination of Conduriol A in Guangxi Gymnema sylvestre(Retz. )Schult by TLCS[J]. Chinese journal of experimental traditional medical formulae, 2010, 16(5): 54-56.
QIU Qin1, ZHEN Han-shen1, XIAO Cong3, et al. Determination of Conduriol A in Guangxi Gymnema sylvestre(Retz. )Schult by TLCS[J]. Chinese journal of experimental traditional medical formulae, 2010, 16(5): 54-56. DOI: 10.13422/j.cnki.syfjx.2010.05.041.
Objective:To determine the content of conduriol A in Guangxi Gymnema sylvestre(Retz. )Schult by TLCS. Method:Silica H thin layer plate was used; the developer reagent was benzene:ethyl acetate:methanol (10∶ 3∶ 5)
the color reagent was 5% vanillin sulfate solution. The plate was at heating on 105 ℃
when the spot was clear; the detection wavelength was 538 nm and the reference wavelength was at 700 nm. Result: The conduriol A was linear in range of 1. 025 ~ 6. 150 μg; the average recovery was 98. 84%
RSD = 2. 02% (n = 6). The average content of conduriol A was 2. 08% in was simple
sensitive
accurate and had good reproducibility. Conclusion: The method can be used the identification and determination method of Guangxi Gymnema Sylvestre( Retz. ) Schult and qualitatively.