A Validated Reverse-Phase HPLC Method for Quantitative Determination of Ganoderic Acids A and B in Cultivated Strains of Ganoderma spp. (Agaricomycetes) Indigenous to India.

Twenty isolates of Ganoderma spp. indigenous to India were used in this study. A reverse-phase high-performance liquid chromatography (HPLC) method was used to quantify 2 of the most bioactive triterpenes, ganoderic acid A (GAA) and ganoderic acid B (GAB), among the cultivated Ganoderma spp. The HPLC analysis was performed on an Agilent 1260 Infinity HPLC system with a Zorbax C18 column, using gradient elution of acetonitrile and 0.1% acetic acid. The detection wavelength was set at 254 nm, with a flow rate of 0.6 mL/min. The method was validated according to the guidelines of International Conference on Harmonisation and produced satisfactory results. The amount of GAA varied from 827.50 to 2010.36 µg/g, whereas GAB varied from 16.64 to 916.89 µg/g. The developed method is simple, specific, accurate, and precise, and can be useful for qualitative and quantitative evaluation of ganoderic acids.