Predicting method for impact energy needed for quantifying content of traditional Chinese medicine of triterpenoid saponin on basis of electrospray protonation cracking

Abstract

The invention discloses a predicting method for impact energy needed for quantifying the content of a traditional Chinese medicine of triterpenoid saponin on the basis of electrospray protonation cracking. The predicting method comprises the steps that (1) medicinal plants adopting the triterpenoid saponin as a main active constituent are selected as representative plants; (2) triterpenoid saponinmodel compounds with representativeness are selected from the representative plants; and (3) the content of the triterpenoid saponin in the medicinal plants is quantified on the basis of electrosprayprotonation cracking, and the needed impact energy is predicted through the following formulas of CE=0.0337*Q1+0.5686 and CE=0.0337*Mw+0.9361, wherein Q1 is equal to [M+H / NH4]+, the linear range of Q1 is 600-1600 Da, R2 is equal to 0.91, the linear range of Mw is 600-1600 Da, and R2 is equal to 0.9096. The CE value obtained through the predicting method and the CE value obtained through a singlefactor investigation method have no significant difference, and it is explained that the predicting method can be applied to detecting of a triple quadrupole mass spectrum.

Description

technical field [0001] The present invention relates to a method for predicting the collision energy required for analyzing and quantifying the content of triterpene saponins in traditional Chinese medicine, in particular to a method for rapidly predicting the ideal collision energy required for quantifying triterpene saponins in traditional Chinese medicine based on electrospray protonation cracking-multiple reaction monitoring mass spectrometry, The invention belongs to the field of quantitative detection of triterpenoid saponin content in traditional Chinese medicine. Background technique [0002] Triterpene saponins form stable [M+H] in mobile phases containing formic acid or ammonium formate + and / or [M+NH 4 ] + Molecular ion peaks, using liquid chromatography-tandem quadrupole mass spectrometry, using electrospray positive ion tandem mass spectrometry detection mode (ESI + -MRM), which identified predictable MRM-targeted transitions whose Q 1 and Q 3 The calculati...

AI Technical Summary

Problems solved by technology

In the early stage, the inventor's research group optimized CE through traditional syringe pump method, single factor experiment method and response surface method. However, when multiple triterpenoid saponins are analyzed at the same time, it is time-consuming and laborious to use these methods to obtain the optimal collision energy. Therefore, there is an urgent need to provide a simple and accurate prediction method for the collision energy required for quantifying the content of triterpene saponins in traditional Chinese medicine based on electrospray protonation cracking

Images