Related Experiment Video
Updated: May 1, 2026
A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
Rapid purification of gram quantities of β-sitosterol from a commercial phytosterol mixture
Narayanan Srividya, Deanna Brooke Heidorn, Bernd Markus Lange1
1Institute of Biological Chemistry and M,J, Murdock Metabolomics Laboratory, Washington State University, Pullman, WA 99164, USA. lange-m@wsu.edu.
Background:
β-Sitosterol, a plant sterol or phytosterol, has commercial uses in the nutraceutical and pharmaceutical industries, but is also employed frequently in biological research. Phytosterols always accumulate as mixtures, and obtaining highly pure β-sitosterol in larger quantities for biological assays has been a challenge.
Findings:
An improved method for the rapid purification of β-sitosterol from a commercial phytosterol extract is presented. Fractional crystallization of soybean oil yielded a soluble and an insoluble fraction. β-Sitosterol was purified by silica gel and Na-Y zeolite chromatography.
Conclusion:
The rapid and cost effective three-step purification described here afforded β-sitosterol in gram quantities with high purity (>92%) and yield (>22%).
