Effects of ultrasound on the extraction of antioxidants from bearberry ( Arctostaphylos adans ) leaves

详细信息    查看全文

• 作者：N. Yu. Gribova ; T. A. Filippenko ; A. N. Nikolaevskii ; E. I. Khizhan and O. V. Bobyleva
• 刊名：Pharmaceutical Chemistry Journal
• 出版年：2008
• 出版时间：October, 2008
• 年：2008
• 卷：42
• 期：10
• 页码：593-595
• 全文大小：105.4 KB

文摘

The effects of ultrasound (f = 60 kHz) on the quantity of biologically active substances extracted from bearberry leaves into a water:ethanol (1:1) mixture were studied, along with their antioxidant properties. The optimal conditions for extract preparation were identified: the raw material:extractant ratio and the duration of ultrasound exposure. Positive and negative aspects of the ultrasound extraction of antioxidants are discussed. The antioxidant activity of the extract prepared in optimum conditions was greater than that of a bearberry leaf extract prepared without ultrasound, increasing the resistance of sunflower oil to oxidation by factors of 2–2.2.