| abstract |
The present invention relates to the plant vegetative somunifera, more particularly advantageous levels of withanolide glucosides and oligosaccharides, minimal polysaccharides, and substantially low levels of free vitaferin A and equivalents (Witaa). A high-purity extract composition that improves the user's cognitive improvement effect, and an extraction method for obtaining such a composition, and its medicinal product, nutritional supplement product, and personal care product . |