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Volatilization

Volatilization

Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...

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Comparative study on volatile components of Nardostachys rhizome.

Ken Tanaka¹, Katsuko Komatsu

¹Division of Pharmacognosy, Department of Medicinal Resources, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan. ktanaka@inm.u-toyama.ac.jp

Journal of Natural Medicines

|April 12, 2008

Summary

This study analyzed volatile compounds in Nardostachys chinensis and Nardostachys grandiflora using solid phase micro extraction-gas chromatography. Specific chemical markers were identified to differentiate between these two valuable medicinal plant species.

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Area of Science:

Phytochemistry
Analytical Chemistry
Pharmacognosy

Background:

Nardostachys chinensis and Nardostachys grandiflora are important crude drugs.
Understanding their volatile chemical profiles is crucial for quality control and authentication.

Purpose of the Study:

To identify and compare the volatile components of Nardostachys chinensis and Nardostachys grandiflora.
To establish chemical markers for distinguishing between the two species.

Main Methods:

Solid Phase Micro Extraction (SPME) coupled with Gas Chromatography (GC) and GC-Mass Spectrometry (GC-MS).
Analysis of volatile constituents from 13 crude drug samples.

Main Results:

Twenty-three volatile compounds were identified, representing a significant portion of the total volatile content.
N. chinensis major constituents: beta-Maaliene, 9-aristolene, calarene, patchouli alcohol.
N. grandiflora major constituents: aromadendrene, cube-11-ene, epi-alpha-selinene, spirojatamol, valeranone.
Beta-maaliene and 9-aristolene peaks in GC profiles effectively distinguished the two species.

Conclusions:

Distinct volatile profiles exist between Nardostachys chinensis and Nardostachys grandiflora.
Specific compounds, beta-maaliene and 9-aristolene, serve as reliable markers for species identification.