A rapid and eco-friendly method for determination of the main components of gamma-Oryzanol (cas 11042-64-1) in equestrian dietary and nutritional supplements by liquid chromatography—Tandem mass spectrometry

Add time:08/22/2019    Source:sciencedirect.com

gamma-Oryzanol (cas 11042-64-1) (GO) has gained special attention in the equine sports industry in recent years due to its touted properties, including the fact that it may cause anabolic effects on muscle growth and reduce fatigue. Many manufactures offer supplements containing GO as a naturally occurring anabolic substance; however, some producers do not declare its presence in product compositions. Taking into consideration the touted properties of GO, its ambiguous effectiveness and the open character of the Prohibited Substances List established by the Fédération Equestre Internationale, there is an urgent need to elaborate procedures for the estimation of horse exposure to GO during supplementation, as well as during routine analysis of supplements. This work describes the development and validation of the method for determination of the four main GO components, i.e., cycloartenyl ferulate, 24-methylenecycloartanyl ferulate, campesteryl ferulate and β-sitosteryl ferulate, in equestrian supplements based on LC–MS/MS after a simple ultrasound-assisted extraction (Eco-Scale score value of 76). The analytical performance achieved satisfactory results in terms of linearity (R2 > 0.9910), sensitivity (LODs ranged from 0.4 to 1.9 ng/mL), intra- and interday accuracy (from 90.4–115.8%), precision (CV < 9.6%) and recovery (from 87.6–108.6%) for all of the investigated compounds. The method was successfully applied to the analysis of thirty equestrian supplements.

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