Abstract
<p>A high value medicinal plant <em>W. somnifera </em>L. Indian Ginseng; Ashwagandha investigated for the antioxidant and influence of physico-chemical properties of soil on antioxidant along the topographical gradients in Kullu Valley, North Western Indian Himalaya. Total phenolic and flavonoid contents in methanol extracts of fruits, leaves, stems and roots were quantified and their antioxidant activities were evaluated using the <em>in-vitro</em> assays such as DPPH, ABTS and FRAP. The study revealed that fruits, leaves, stems and roots of <em>W. somnifera</em> were potent source of natural phenolics and flavonoids and possesses antioxidant activities, which were significantly affected by the changes in altitude (p ≤0.05). Total phenolic and flavonoid contents in different parts of <em>W. somnifera</em> showed significant correlations with soil properties. The study conclude that changes in topographical gradients particularly altitude influenced antioxidant activities of <em>W. somnifera</em> and suggest that antioxidant rich population of a desired medicinal plant should be identified for their conservation management and sustainable utilization in pharmaceutical and food industries.</p><p> </p>
Highlights
Withania sominifera Dunal (Solanaceae), known as Indian Ginseng, Ashwagandha or Winter Cherry, is a small, erect, evergreen, woody shrub that grows up to a height of one meter
Keeping the medicinal importance of W. somnifera species in view, the present study was carried out in Kullu Valley of Himachal Pradesh, India to assess the spatial patterns of total phenolic contents, total flavonoid contents and antioxidant properties of different parts of W. somnifera plants
The present study reports the spatial trends and intra specific variations in total phenolic and flavonoid contents in menthol extracts from different parts of W. somnifera and their antioxidant activities commonly found in the mid hill region of Himachal Pradesh
Summary
Withania sominifera Dunal (Solanaceae), known as Indian Ginseng, Ashwagandha or Winter Cherry, is a small, erect, evergreen, woody shrub that grows up to a height of one meter. It is one of the most valuable plants in Traditional Indian Systems of Medicine. The entire plant is used for the treatment of tuberculosis, rheumatism, inflammatory conditions, and cardiac diseases. Keeping the medicinal importance of W. somnifera species in view, the present study was carried out in Kullu Valley of Himachal Pradesh, India to assess the spatial patterns of total phenolic contents, total flavonoid contents and antioxidant properties of different parts of W. somnifera plants. The generated data were correlated with soil properties to assess the influence of soil properties on antioxidant properties of W. somnifera plants
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