Determination of Total Ash and Acid-Insoluble Ash of Flos lonicerae of Xiushan

Objective To determine the content of total ash and acid-insoluble ash of honeysuckle(Lonicera macranthoides Hand.-Mazz)of Xiushan and provide data for the establishment of its quality standards.Methods The method of determination of total ash and acid-insoluble ash stipulated in Chinese Pharmacopeia(2005 edition,Volume IX K)was used.Results The results showed that total ash and acid-insoluble ash are below 8% and 3% in L.macrathoides Hand.-Mazz and below 8% and 2% in the good variety Yulei No.1,respectively.Conclusion:Total ash and acid-insoluble ash of honeysuckle produced in Xiushan are in the permissible range stipulated in Chinese Pharmacopeia,i.e.total ash ≤10% and acid-insoluble ash ≤3%.