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Related Experiment Video

Updated: Feb 5, 2026

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[Chemical study on Cassiae Semen processing procedure].

Ri-Xin Guo1, Xian-Kuo Yu1, Xiao Zhang1,2

  • 1Institute of Chinese Materia Medica， Chinese Academy of Chinese Medical Sciences， Beijing 100700， China.

Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica
|September 12, 2018
PubMed
Summary
This summary is machine-generated.

Processing Cassiae Semen decreases glycoside content and increases aglycones due to high-temperature hydrolysis, not enzyme activity. This study clarifies the chemical transformation mechanism during Cassiae Semen processing.

Keywords:
Cassiae Semencontent changeglycoside hydrolaseshigh temperatureprocessing

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Area of Science:

  • Pharmacognosy
  • Natural Product Chemistry
  • Analytical Chemistry

Background:

  • Processing of Cassiae Semen leads to significant changes in its chemical composition, with decreased glycosides and increased aglycones.
  • These observed changes have been hypothesized to be related to endogenous glycosidases or the thermal processing conditions.

Purpose of the Study:

  • To investigate the specific roles of glycoside hydrolases and high-temperature processing on the chemical constituents of Cassiae Semen.
  • To elucidate the underlying mechanism responsible for the observed decrease in glycosides and increase in aglycones during Cassiae Semen processing.

Main Methods:

  • High-performance liquid chromatography (HPLC) was employed to quantify the main chemical components.
  • Experiments were designed to assess the impact of both enzymatic activity (glycoside hydrolases) and thermal processing on glycoside and aglycone levels.

Main Results:

  • Glycoside hydrolases were identified in Cassiae Semen and demonstrated the ability to hydrolyze glycosides into aglycones under optimal conditions (suitable temperature, sufficient water).
  • However, the enzymatic activity did not significantly alter the main constituent content during the typical processing procedure.
  • The primary reason for the decrease in glycosides and increase in aglycones was determined to be the cracking of glycosidic bonds at high temperatures.

Conclusions:

  • High-temperature processing is the main factor responsible for the chemical transformations observed in Cassiae Semen, specifically the hydrolysis of glycosides to aglycones.
  • The presence of active glycoside hydrolases in Cassiae Semen does not appear to be the primary driver of these compositional changes during standard processing.
  • This research provides a clearer understanding of the processing mechanism of Cassiae Semen, crucial for its medicinal applications.