Effect of the pre-treatment of the samples on the natural substances extraction from Helianthus annuus L. using supercritical carbon dioxide

被引：24

作者：

Casas, L

Mantell, C

Rodríguez, M

Gordillo, MD

Torres, A

Macías, FA

de la Ossa, EM

机构：

[1] Univ Cadiz, Fac Sci, Dept Chem Engn Food Technol & Environm Technol, Cadiz 11510, Spain

[2] Univ Cadiz, Fac Sci, Dept Organ Chem, Cadiz 11510, Spain

来源：

TALANTA | 2005年 / 67卷 / 01期

关键词：

sunflower; Helianthus annuus L; natural product; supercritical carbon dioxide; extraction; bioactive;

D O I：

10.1016/j.talanta.2005.02.031

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The extraction of bioactive compounds from sunflowers (Helianthus annuus L.) with supercritical carbon dioxide has been studied. The samples were treated in four different ways and the effects of two factors (pressure and temperature) were investigated at 100, 500 bar and 35, 50 degrees C. The best yields were obtained using a high temperature and a high pressure (50 degrees C and 500 bar). The dry samples produced better extraction yields than the moist samples. The bioactivities of the extracts were compared for the samples treated in different ways. The best activity profiles were obtained for the moist samples extracted at 35 degrees C and 500 bar. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：175 / 181

页数：7

共 19 条

[1] Allelopathy as a tool in the management of biotic resources in agroecosystems [J].