Dauksas E, Venskutonis P R, Povilaityte V, Sivik B
Kaunas University of Technology, Faculty of Chemical Technology, Department of Food Technology, Radvilenu pl 19, LT-3028 Kaunas, Lithuania.
Nahrung. 2001 Oct;45(5):338-41. doi: 10.1002/1521-3803(20011001)45:5<338::AID-FOOD338>3.0.CO;2-T.
Sage herb (Salvia officinalis L.) was extracted at supercritical fluid extraction (SFE) conditions with carbon dioxide at different parameters and the extracts tested on their antioxidant activity (AA). SFE of sage herb at 35 MPa pressure was found to be an effective method to obtain pure extracts. The yields of the extracts were substantially increased by using 1% of entrainer solvent ethanol. The fractionation of sage extract was a complex procedure in terms of extract distribution between separators operating at various pressure and temperature conditions. It was also proved by testing the AA of the extracts in rapeseed oil. The effect of the extracts on the rapeseed oil weight gain varied in a wide range (from 'very low' to 'high') depending on the fractionation conditions. Preliminary results showed that to obtain more effective antioxidant fractions separation steps should be started at 10 MPa lower pressure than that used for the extraction.
在超临界流体萃取（SFE）条件下，使用二氧化碳在不同参数下对鼠尾草（Salvia officinalis L.）进行萃取，并对提取物的抗氧化活性（AA）进行测试。发现在35MPa压力下对鼠尾草进行超临界流体萃取是获得纯提取物的有效方法。使用1%夹带剂乙醇可大幅提高提取物的产率。就提取物在不同压力和温度条件下运行的分离器之间的分布而言，鼠尾草提取物的分馏是一个复杂的过程。通过测试菜籽油中提取物的抗氧化活性也证明了这一点。提取物对菜籽油重量增加的影响在很大范围内变化（从“非常低”到“高”），这取决于分馏条件。初步结果表明，为了获得更有效的抗氧化级分，分离步骤应在比萃取压力低10MPa的压力下开始。
