Related Experiment Video
Updated: Jul 16, 2026

Tea Aroma Analysis Based on Solvent-Assisted Flavor Evaporation Enrichment
Published on: May 26, 2023
Statistical mixture design optimization of extraction media and mobile phase compositions for the characterization of
Aline Alves de Almeida1, Ieda Spacino Scarminio
1Departamento de Química, Laboratório de Quimiometria em Ciências Naturais, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
Abstract:
The influence of different solvents on the extraction medium and the RP-HPLC mobile phase composition were investigated by statistical mixture designs to optimize solvent proportions to prepare the fingerprint of a medicinal herbal extract. For modeling, the number of peaks was used as a measure of fingerprint information. The optimum compositions of solvent to extract chemical substances from green tea and for mobile phase chromatographic analysis were ethyl acetate/ ethanol/dichloromethane (20:5:75 v/v/v) and MeOH/ACN/water (7.5:57.5:35 v/v/v), respectively. This system results in 26 peaks in the chromatographic fingerprint. These results show that an incorrect choice of modifiers for mobile phase composition and solvent extraction hampers the detection of a maximum number of peaks and produces a poor chromatographic fingerprint.
More Related Videos
Related Concept Videos
Optimizing Chromatographic Separations
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Methods of Medium Optimization

