FRACTIONATION OF BIOLOGICALLY ACTIVE COMPONENTS OF GRAPE SEED (VITIS VINIFERA) BY SUPERCRITICAL FLUID EXTRACTION

被引：8
作者：
Calvo, A. [1 ]
Morante, J. [2 ]
Plander, Sz [1 ]
Szekely, E. [1 ]
机构：
[1] Budapest Univ Technol & Econ, Dept Chem & Environm Proc Engn, Muegyetem Rkp 3, H-1111 Budapest, Hungary
[2] Univ Valladolid, Dept Chem Engn & Environm Technol, Plaza Sta Cruz 8, E-47002 Valladolid, Spain
来源：
ACTA ALIMENTARIA | 2017年 / 46卷 / 01期
关键词：
supercritical fluid extraction; grape seed; Vitis vinifera; proanthocyanidins; antioxidants; DPPH; OIL; ANTIOXIDANTS;
D O I：
10.1556/066.2017.46.1.4
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
Supercritical fluid extraction (SFE) was used for fractionation of grape seed to be applied in natural products of the food, cosmetic, or pharmaceutical industry. A two-step process was developed, consisting of conventional alcoholic extraction followed by SFE with carbon dioxide. The effects of pressure and concentration of co-solvent (ethanol) at constant temperature and solvent to feed-ratio were evaluated. The antioxidant activity of extracts and raffinates was measured with the DPPH* free radical scavenging assay. It was observed that supercritical carbon dioxide can be used in the described process for fractionation of an alcoholic grape seed extract to obtain a product with noticeably high antioxidant activity and a second one with no antioxidant activity or pro-oxidant activity.
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页码：27 / 34
页数：8
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