Related Experiment Video
Updated: Feb 6, 2026

Analysis of Lipid Droplet Content in Fission and Budding Yeasts using Automated Image Processing
Published on: July 17, 2019
[Multicomponent Content Difference Among Different Processing Degrees of Moutan Cortex Charcoal]
Objective:
To establish a method of simultaneously determining gallic acid,5-HMF,catechin and paeonol in the different processing degrees of Moutan Cortex charcoal by HPLC,and to compare the difference.
Methods:
The HPLC separation was carried out on a UltimateTMXB-C18column( 250 mm × 4. 6 mm,5 μm) with a mobile phase of acetonitrile and water containing 0. 5% formic acid. The flow rate was 1. 0 m L / min at 30 ℃ column temperature,and the detection wavelength was 245 nm.
Results:
The contents of gallic acid and 5-HMF were increased with the extension of processing time,but declined when it reached to a certain extent. And the contents of catechin and paeonol were decreased in the heating process.
Conclusion:
The differences of compounds content in different processing degree of Moutan Cortex charcoal were greatly. It provides a scientific basis for quality standard of Moutan Cortex charcoal.
Related Concept Videos
One-Degree-of-Freedom System
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
Degrees of Freedom
For example, suppose there are three unknown numbers whose mean is 10; although we can freely assign values to the first and second numbers, the value of the last number can not be arbitrarily assigned.
Degrees of Freedom
For example, suppose there are three unknown numbers whose mean is 10; although we can freely assign values to the first and second numbers, the value of the last number can not be arbitrarily...
Degree of Unsaturation
The degree of unsaturation for hydrocarbons is U = (2C + 2 − H) / 2, where C is the number of carbon atoms and H is the number of hydrogen atoms.
Radian and Degree Measure
Stereotype Content Model

