Maceration-Mediated Liquid-Liquid Extraction and Reverse-Phase High-Performance Liquid Chromatography-Based Pragmatic Analysis of Silybins

J Chromatogr Sci. 2020 Aug 21;58(8):779-787. doi: 10.1093/chromsci/bmaa035.

Abstract

This study presents a pragmatic and easily scalable maceration-mediated liquid-liquid extraction (MMLLE) and reverse-phase high-performance liquid chromatography (RP-HPLC)-based determination of Silybins from plant material (Curcuma longa L.). The processing of calibration standards revealed that the RP-HPLC method was linear over a concentration range of 1-100 μg/mL with regression coefficient (R2) > 0.9950, limit of detection 0.02 μg/mL and limit of quantification <0.07 μg/mL. The optimum chromatographic conditions resolved Silybin A, Silybin B, Isosilybin A and Isosilybin B within 5 min of analysis time. The reproducible recovery rates of spiked flavonolignans (96.24-115.40%) from quality controls established the effectiveness of MMLLE procedure prior to HPLC determination. The real-time analysis revealed the presence of silybins in C. longa roots. The results further endorse that MMLLE prior to chromatographic determination may provide a more pragmatic analytical solution for the analysis/isolation of silybins.

MeSH terms

  • Chromatography, High Pressure Liquid / methods
  • Chromatography, Reverse-Phase / methods*
  • Curcuma / chemistry*
  • Limit of Detection
  • Linear Models
  • Liquid-Liquid Extraction / methods*
  • Plant Extracts / chemistry
  • Reproducibility of Results
  • Silybin / analysis*
  • Silybin / chemistry
  • Silybin / isolation & purification*

Substances

  • Plant Extracts
  • Silybin