Electric-field-assisted extraction of antioxidants from bearberry (Arctostaphylos adans) leaves

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• 作者：N. I. Belaya ; T. A. Filippenko ; A. V. Belyi ; N. Yu. Gribova ; A. N. Nikolaevskii and A. A. Biryukova
• 刊名：Pharmaceutical Chemistry Journal
• 出版年：2006
• 出版时间：September, 2006
• 年：2006
• 卷：40
• 期：9
• 页码：504-506
• 全文大小：127 KB

文摘

The influence of extraction conditions on the yield of natural antioxidants from leaves of bearberry (Arctostaphylos adans) has been studied. It is established that more complete extraction is ensured by maceration with water in a constant electric field (U = 35 V and I = 250 mA) for 2 h at a temperature of 30¡ãC with continuous stirring. The proposed method of obtaining extracts with antioxidant properties increases the efficiency and rate of extraction of phenolic compounds, reduces the process temperature, and decreases the time of thermal processing of the extract. At a concentration of 0.1 wt. % , the bearberry extract obtained under such conditions ensures a twofold increase in the resistance of sunflower oil to oxidation.