Electric-field-assisted extraction of antioxidants from bearberry leaves

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• 作者：N. Yu. Gribova ; N. I. Belaya ; T. A. Filippenko ; A. N. Nikolaevskii ; A. V. Belyi and V. A. Zaets
• 刊名：Pharmaceutical Chemistry Journal
• 出版年：2008
• 出版时间：March, 2008
• 年：2008
• 卷：42
• 期：3
• 页码：127-129
• 全文大小：120.6 KB

文摘

Conditions for improving the extraction of substances with antioxidant properties from bearberry (Arctostaphylos Adams) leaves have been studied. It is established that the natural antioxidants are most completely extracted by maceration in a constant electric field (U = 35 V, I = 250 mA) for 2 h at 303 K with stirring. The optimum extractant is 1 % aqueous acetic acid with added surfactant (Tween-80, 8.8 ¡Á 10− 4 M). This extract increases the stability (storage time) of sunflower oil more than four times. The proposed method of electroextraction increases the yield of extracted substances with antioxidant properties and decreases the yield of ballast substances without complicating the procedure and increasing the consumption of materials.