Current advances in phytosterol free forms and esters: Classification, biosynthesis, chemistry, and detection

Area of Science:

• Plant biochemistry
• Natural product chemistry
• Pharmacology

Background:

• Phytosterols are secondary plant metabolites with structures similar to cholesterol.
• They are found in various plant families, including oleaginous plants and cereals.
• Phytosterols possess significant pharmacological properties and diverse structural variations.

Purpose of the Study:

• To provide a comprehensive overview of phytosterols, including their definition, classification, and biogenic relationships.
• To discuss the synthesis, applications, and role of phytosterol esters as hormone precursors.
• To review the latest advancements in analytical techniques for phytosterols and oxyphytosterols.

Main Methods:

• Literature review focusing on phytosterol structure, biosynthesis, esterification, and analysis.
• Exploration of physical, chemical, and enzymatic esterification methods.
• Emphasis on modern hyphenated techniques for phytosterol and oxyphytosterol analysis.

Main Results:

• Phytosterols are characterized by a sterane ring, specific side-chain modifications, and varying oxidation degrees.
• Esterification improves phytosterol bioavailability and sensory qualities in various products.
• Advanced analytical methods, particularly hyphenated techniques, offer precise detection and characterization.

Conclusions:

• Phytosterols are versatile plant compounds with significant health and industrial applications.
• Esterification is a key strategy for optimizing their functional properties.
• Continued advancements in analytical chemistry are crucial for understanding and utilizing phytosterols effectively.