C Rohini, T A Kavya, A Niranjana Kumar, J Kotesh Kumar, K V N Satya Srinivas, B Venkatesh, P Ravi Kumar
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Quantitative analysis of vasicine and vasicinone in Adhatoda vasica (Nees.) using RP-HPLC: distribution and solvent extraction efficiency.
Adhatoda vasica Nees (Acanthaceae), an ayurvedic shrub, is used widely in respiratory disorders. The pharmacologically most studied phytoconstituent in A. vasica is vasicine, a bitter quinazoline alkaloid present in leaves. A robust method was developed for the simultaneous quantification and analysis of two major alkaloids i.e. vasicine and vasicinone by RP-HPLC. This paper describes the distribution of these markers in different parts of the plant along with the best extraction method for their recovery. The highest abundance of vasicine was observed in the leaves (0.7332%), than in the stems and roots, whereas vasicinone was present only in the leaves (0.0436%). Methanol was identified as the most effective solvent for the extraction of vasicine in successive extraction (the herb was extracted sequentially with increasing solvent polarity) whereas 30% aq. Methanol is recommended for extraction of vasicinone in individual solvent extraction (the fresh herb was extracted separately with different solvents) method.
期刊介绍：
The aim of Natural Product Research is to publish important contributions in the field of natural product chemistry. The journal covers all aspects of research in the chemistry and biochemistry of naturally occurring compounds.
The communications include coverage of work on natural substances of land and sea and of plants, microbes and animals. Discussions of structure elucidation, synthesis and experimental biosynthesis of natural products as well as developments of methods in these areas are welcomed in the journal. Finally, research papers in fields on the chemistry-biology boundary, eg. fermentation chemistry, plant tissue culture investigations etc., are accepted into the journal.
Natural Product Research issues will be subtitled either ""Part A - Synthesis and Structure"" or ""Part B - Bioactive Natural Products"". for details on this , see the forthcoming articles section.
All manuscript submissions are subject to initial appraisal by the Editor, and, if found suitable for further consideration, to peer review by independent, anonymous expert referees. All peer review is single blind and submission is online via ScholarOne Manuscripts.
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