Research on the quality standard of Kangjing pill / 国际中医中药杂志

ABSTRACT

Objective To improve the quality standard ofKangjing pills.Methods The qualities of Angelica sinensis, Taxillus sutchuenensis, Radix paeoniae Alba, Eucommia ulmoides and Ligusticum chuanxiong Hort in the pills were identified by microscopic examination; the natures of Radix rehmanniae Praeparata, Radix paeoniae Rubra, Radix paeoniae Alba,Angelica sinensis and Ligusticum chuanxiong Hort were detected by thin layer chromatography (TLC); the content of Paeoniflorin were measured by high performance liquid chromatography (HPLC). The operating conditions by HPLC were InertSustain C18 (4.6 mm×250 mm, 5μm ), the mixture of acetonitrile-0.2% Phosphoric acid water (1585) as mobile phase, 1.0 ml/min as flow speed and wavelength 316 nm.Results The results observed by microscopy were obvious; The results showed that the TLC spots of Radix rehmanniae Praeparata, Radix paeoniae Rubra, Radix paeoniae Alba, Angelica sinensis and Ligusticum chuanxiong Hort were fairly clear, and the according blank test showed no interference. Ferulic Acid showed a good linear relationship within the range of 0.067-0.168μg (r=0.9997) with an average recovery of 99.84% (RSD=1.22%). Conclusions Microscopy, TLC and HPLC are handy, safe and accurate forKangjing pills to determine the quality.