Approaches to Authenticating Products Containing Red Yeast Rice Extract (Monacolin K).

Area of Science:

• Food Science
• Analytical Chemistry
• Pharmacology

Background:

• Red yeast rice (RYR) supplements are popular for cholesterol management due to monacolin K (MK), chemically identical to lovastatin.
• RYR products face quality and safety issues, including variable MK content, labeling non-compliance, and contamination with undeclared statins.
• Distinguishing natural MK from added synthetic lovastatin is analytically challenging.

Purpose of the Study:

• To review the chemical composition of RYR, focusing on monacolins and pigments.
• To summarize current regulatory, safety, and quality concerns regarding RYR supplements.
• To propose a multi-level analytical strategy for RYR product authentication and quality assessment.

Main Methods:

• Comprehensive review of RYR chemical composition, including monacolins, pigments, and secondary metabolites.
• Critical summary of regulatory, safety, and quality issues.
• Proposal of a multi-level analytical strategy integrating targeted quantification, pigment identification, GC-MS, and 1H NMR.

Main Results:

• The review highlights significant variability in MK content and frequent non-compliance in RYR supplements.
• A proposed analytical workflow combines targeted and non-targeted methods for authentication.
• This integrated approach aids in detecting adulteration and assessing overall quality.

Conclusions:

• Standardized analytical protocols are crucial for improving transparency and consumer safety in the RYR supplement market.
• The proposed analytical strategy offers a reliable method for RYR authentication and quality control.
• Addressing quality and safety concerns is essential for the growing RYR supplement industry.