Quantification of vasaka alkaloids in in vitro cultures and in natural leaves from Indian subcontinents by reversed phase- high performance liquid chromatography
Abstract
Background: The present study was designed to develop an efficient protocol for studying the enhancement of in vitro production of secondary metabolites in Adhatoda vasica leaves collected from the varied geographical locations of Indian sub-continents by a validated simultaneous high-performance liquid chromatography gradient method for the quantification of vasicine and vasicinone in the developed calli and crude samples. Materials and Methods: The analysis was carried out on a reverse phase C18column using 0.1% of orthophosphoric acid: Acetonitrile in gradient manner and carried out the detection at 280 nm wavelength keeping the flow rate of 1.0 mL/min. Results: The simultaneous method was found linear with regression coefficient r2 = 0.991 in a wide range (100–500 μg/mL) precise, accurate, and robust for quinazoline alkaloids in samples. Results clearly showed a significant increase in the concentration of alkaloids in in vitro cultures as compared to natural ones. The proposed method was validated as per the International Conference on Harmonization guidelines for accuracy, precision, robustness, limit of detection, and limit of quantitation. Conclusion: The developed method was found suitable for quality control of A. vasica and for the analysis of vasicine and vasicinone in any type of sample.
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