| 摘要 |
<p>The subject of the invention is a procedure of preparation and method of application of extracts from the fir and spruce bark, which are obtained according to a special extraction procedure, in which crushed bark is extracted with water first, then the water extract is extracted with ethylacetate and finally polyphenols are precipitated from ethylacetate under addition of pentane. The extract obtained contains between 30 and 96% of polyphenols and exhibits an antioxidant activity equivalent to 30 and 96% of the pyrogallol standard. The extract is used especially as a food supplement for achieving a required quantity of antioxidants in everyday food, as a medicament for pathophysiological states, indirectly or directly connected with the lack of polyphenols or their activity, and as an additive in nutrition and cosmetics.</p> |
