JPC - Journal of Planar Chromatography - Modern TLC
Volume/Issue:
Volume 22: Issue 4

Development of a new method for identification and estimation of Withania somnifera root, and a method for quantitative analysis of withaferin A in young and old roots

Authors:
Jigar Patel L.M. College of Pharmacy Department of Pharmacognosy Navarangpura Ahmedabad (Gujarat) 380009 India

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,
Suman Lahiri L.M. College of Pharmacy Department of Pharmacognosy Navarangpura Ahmedabad (Gujarat) 380009 India

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, and
Mamta Shah L.M. College of Pharmacy Department of Pharmacognosy Navarangpura Ahmedabad (Gujarat) 380009 India

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Pages:
283–286
Online Publication Date:
09 Oct 2009
Publication Date:
01 Aug 2009
Article Category:
Research Article
DOI:
https://doi.org/10.1556/jpc.22.2009.4.8
Keywords:
Withania somnifera ; Young root; Old root; Withaferin A; HPTLC
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Withania somnifera , commonly known as Ashwagandha, is a valued herb in Ayurvedic medicine. Root leaves, and preparations of the plant are traditionally used as tonic, hypnotic, sedative and diuretic. W. somnifera mainly contains withanolides which are specific to the Solanaceae family. The biological activity of withanolides, especially withaferin A, has been studied extensively. Methods for analysis of withaferin A and withnolide D require acetylation before analysis, or separation time is extremely long. The main problem in identification of withaferin Awith other separated withanolides is that all withanolides absorb UV light, so without comparison with a standard it is not possible to identify withaferin A. The objectives of this paper are to present a new method of identification of withaferin A, using a destructive reagent, and an HPTLC method for quantification of the compound. Chromatography on silica with toluene-ethyl acetate-acetone 2:3:3 as mobile phase enabled good resolution of withaferin A without interference from other compounds present in W. somnifera . After spraying with anisaldehyde-sulfuric acid reagent and heating for 15 min at 105°C, characteristic orange fluorescence was observed for withaferin Aonly among all the spots resolved. When scanned at 214 nm the RF of withaferin A was 0.62. Interestingly, old root did not contain withaferin A whereas young root contained a large amount. The method was validated for accuracy, precision, specificity, linearity, and limits of detection and quantification. The method is simple, sensitive, and precise, and can be used for routine quality-control testing of W. somnifera .

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Cover JPC - Journal of Planar Chromatography - Modern TLC
JPC - Journal of Planar Chromatography - Modern TLC
Print ISSN:
0933-4173
Online ISSN:
1789-0993

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Journal of Planar Chromatography - Modern TLC
Language English
Size A4
Year of
Foundation		 1988
Volumes
per Year		 1
Issues
per Year		 6
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0933-4173 (Print)
ISSN 1789-0993 (Online)

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