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Metabolic Characterization of Withania Somnifera From Different Regions of India Using NMR Spectroscopy
Posted by Admin, Senior Editor in Ashwagandha
Authored by PubMed
Topics: Ashwagandha Withania Somnifera

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Ashwagandha is an exotic Indian herb which has remarkable stress-relieving properties. In addition to its excellent protective effects on the nervous system, ashwaganDHA may be a promising alternative treatment for a variety of degenerative diseases such as Alzheimer's and Parkinson's. AshwaganDHA has powerful antioxidant properties that seek and destroy the free radicals that have been implicated in aging and numerous disease states. Even more remarkable, emerging evidence suggests that ashwaganDHA has anti-cancer benefits as well.

Namdeo AG, Sharma A, Yadav KN, Gawande R, Mahadik KR, Lopez-Gresa MP, Kim HK, Choi YH, Verpoorte R. Metabolic characterization of Withania somnifera from different regions of India using NMR spectroscopy. 1. Planta Med. 2011 Nov;77(17):1958-64. Epub 2011 Jul 4.
Withania somnifera (L.) Dun. (Solanaceae), known as Indian ginseng, is one of the most popular medicinal plants in India. Considering the importance and common use of this plant, it is necessary to investigate its holistic metabolite profile. However, with existing analytical methods which are based on TLC and HPLC?UV (or MS), it is difficult to obtain information of the whole range of compounds appropriately. In this study, the metabolic characterization of Withania somnifera leaves, stems, and roots collected in six different regions in India was performed using ?H NMR spectroscopy followed by principal component analysis (PCA) and hierarchical clustering analysis (HCA). Of the parts of Withania somnifera analyzed in this study, the leaf was found to have the widest range of metabolites, including amino acids, flavonoids, lipids, organic acids, phenylpropanoids, and sugars, as well as the main secondary metabolites of the plant, withanolides. The ?H NMR spectra revealed the presence of two groups of withanolides: 4-OH and 5,6-epoxy withanolides (withaferin A-like steroids) and 5- OH and 6,7-epoxy withanolides (withanolides Alike steroids). The ratio of these two withanolides was found to be a key discriminating feature of Withania somnifera leaf samples from different origins.

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