[Objectives] This study was conducted to optimize the ethanol extraction technology of monoester alkaloids from Radix Aconiti Preparata. [Methods]On the basis of defined extraction times,ethanol concentration,ethanol ...[Objectives] This study was conducted to optimize the ethanol extraction technology of monoester alkaloids from Radix Aconiti Preparata. [Methods]On the basis of defined extraction times,ethanol concentration,ethanol times and extraction time were investigated by HPLC-MS combined with orthogonal test to optimize extraction process using the content of monoester alkaloids( the sum of benzoyl neoaconitine,benzoyl hypoaconitine and benzoyl aconitine) as an index.[Results]The optimum ethanol extraction technology was as follows: 75% ethanol,ethanol amount 25 times of the medicinal material,and each extraction for 1. 5 h.[Conclusions] The optimal extraction technology is simple,feasible,stable and reliable. It can provide reference for the industrial production and quality control of monoester alkaloids from Radix Aconiti Preparata.展开更多
The extract of Radix aconiti was incubated with rat intestinal bacteria in vitro. Further, aconitine and hypaconitine standard were incubated at the same condition as the extract of Radix aconiti, respectively. Ultra ...The extract of Radix aconiti was incubated with rat intestinal bacteria in vitro. Further, aconitine and hypaconitine standard were incubated at the same condition as the extract of Radix aconiti, respectively. Ultra Performance Liquid Chromatography/Multi-Mass Spectrometry （UPLC/MSn） was used for detecting and identifying all the aco- nite alkaloids. Results showed that there were four metabolites which were identified as 8-butyryl-14-benzoylmesa- conine （m/z 660）, 8-propionyl-14-benzoylaconine （m/z 660）, 8-butyryl-14-benzoylaconine （m/z 674） and 8-valeryl-14-benzoylmesaconine （m/z 674） in the metabolized sample of the extract of Radix aconiti. The relative area ratio of them presented increasing trend during 6 d. On the basis of all results, we could concluded that substi- tution at N atom mainly influenced the metabolizing rate of diester-diterpenoid alkaloids （DDAs）, C-8 substitute was active metabolized site, intestinal bacterial metabolites of the aconite alkaloids in the extract of Radix aconiti were mainly the substitute with propionyl group, butyl group or valeryl group at C-8. This paper illustrated holistic metabolizing profile of the extract of Radix aconiti in vitro and possible metabolizing reaction type of main DDAs, which could provide reference for finding out potential bioactive components in the extract and the prescription of Chinese Medicine.展开更多
基金Supported by Traditional Chinese Medicine Science and Technology Development Program of Shandong Province (2017-1982019-0400)Major Science and Technology Innovation Project of Shandong Province (2018CXGC1304)。
文摘[Objectives] This study was conducted to optimize the ethanol extraction technology of monoester alkaloids from Radix Aconiti Preparata. [Methods]On the basis of defined extraction times,ethanol concentration,ethanol times and extraction time were investigated by HPLC-MS combined with orthogonal test to optimize extraction process using the content of monoester alkaloids( the sum of benzoyl neoaconitine,benzoyl hypoaconitine and benzoyl aconitine) as an index.[Results]The optimum ethanol extraction technology was as follows: 75% ethanol,ethanol amount 25 times of the medicinal material,and each extraction for 1. 5 h.[Conclusions] The optimal extraction technology is simple,feasible,stable and reliable. It can provide reference for the industrial production and quality control of monoester alkaloids from Radix Aconiti Preparata.
文摘The extract of Radix aconiti was incubated with rat intestinal bacteria in vitro. Further, aconitine and hypaconitine standard were incubated at the same condition as the extract of Radix aconiti, respectively. Ultra Performance Liquid Chromatography/Multi-Mass Spectrometry （UPLC/MSn） was used for detecting and identifying all the aco- nite alkaloids. Results showed that there were four metabolites which were identified as 8-butyryl-14-benzoylmesa- conine （m/z 660）, 8-propionyl-14-benzoylaconine （m/z 660）, 8-butyryl-14-benzoylaconine （m/z 674） and 8-valeryl-14-benzoylmesaconine （m/z 674） in the metabolized sample of the extract of Radix aconiti. The relative area ratio of them presented increasing trend during 6 d. On the basis of all results, we could concluded that substi- tution at N atom mainly influenced the metabolizing rate of diester-diterpenoid alkaloids （DDAs）, C-8 substitute was active metabolized site, intestinal bacterial metabolites of the aconite alkaloids in the extract of Radix aconiti were mainly the substitute with propionyl group, butyl group or valeryl group at C-8. This paper illustrated holistic metabolizing profile of the extract of Radix aconiti in vitro and possible metabolizing reaction type of main DDAs, which could provide reference for finding out potential bioactive components in the extract and the prescription of Chinese Medicine.
