Extraction and consecutive purification of anthocyanins from grape pomace using ionic liquid solutions

被引：56
|
作者：
Lima, Alvaro Silva [1 ]
Faria Soares, Cleide Mara [1 ]
Paltram, Renate [2 ]
Halbwirth, Heidi [2 ]
Bica, Katharina [3 ]
机构：
[1] Univ Tiradentes, Postgrad Program Proc Engn, Av Murilo Dantas 300, BR-49032490 Aracaju, SE, Brazil
[2] Vienna Univ Technol, Inst Chem Environm & Biol Engn, Getreidemarkt 9-166, A-1060 Vienna, Austria
[3] Vienna Univ Technol, Inst Appl Synthet Chem, Getreidemarkt 9-166, A-1060 Vienna, Austria
来源：
FLUID PHASE EQUILIBRIA | 2017年 / 451卷
关键词：
Ionic liquids; Biomass; Anthocyanins; Solid-liquid extraction; Aqueous two-phase systems; MICROWAVE-ASSISTED EXTRACTION; AQUEOUS 2-PHASE SYSTEMS; PHENOLIC-COMPOUNDS; ANTIOXIDANT ACTIVITY; VITIS-VINIFERA; L; OPTIMIZATION; SEPARATION; KINETICS; BIOMASS;
D O I：
10.1016/j.fluid.2017.08.006
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The global wine industry generates approximately 8.5 million tons of waste annually, which contains several biomolecules of high value. The present study focuses on the extraction of anthocyanins from grape pomace via solid/liquid extraction with aqueous solutions of the ionic liquid 1-ethyl-3-methylimidzaolium acetate [(C(2)mim]OAc) and sequential purification in aqueous two-phase systems (ATPS) with additional salts. The optimum conditions for solid/liquid extraction were obtained using response surface methodology and yielded up to 3.58 mg g(-1) anthocyanins. During ATPS formation, the highest purification factor (PF = 16.2 fold) was obtained in the bottom and salt-rich phase using K2CO3 (29.41 wt%) and [C(2)mim]OAc (29.28 wt%) at 35 degrees C and atmospheric pressure. The partition process is exothermic, spontaneous and governed by enthalpy forces. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：68 / 78
页数：11
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