Report of special examination results of fructus corni's quality

Aim To provide a special examination of fructus corni's quality.Methods According to the first volume of the criterion of Chinese Pharmacopoeia 2005,the concentration of impurity composition,water and loganin of seventy-nine patches of Fructus Corni samples was determined.Meanwhile,the concentration of loganin in the Fructus Corni's fruit stone,a kind of impurity composition,was also determined.Results The impurity composition in the Fructus Corni samples is 0.1%~16%.The water content is 12.8%~24.9%.And the concentration of loganin is 0.60%~1.12%.Furthermore,the determination results indicate that there is still a little loganin in the fruit stone.Conclusion Considering the examination results of fructus corni's quality,the unqualified rate of impurity composition and water is much higher and all results of determination exceed limited values.Moreover,the loganin is determined in the samples' fruit stone.Therefore,the limited values should be reconsidered.