Phase equilibrium and protein partitioning in aqueous mixtures of maltodextrin with polypropylene glycol

被引：21
|
作者：
da Silva, LHM [1 ]
Meirelles, AJA [1 ]
机构：
[1] Univ Estadual Campinas, Food Engn Dept FEA, Phys Separat Lab, BR-13083970 Campinas, SP, Brazil
来源：
CARBOHYDRATE POLYMERS | 2001年 / 46卷 / 03期
基金：
巴西圣保罗研究基金会;
关键词：
aqueous two-phase systems; maltodextrin; polypropylene glycol; non random two-liquid; partitioning protein;
D O I：
10.1016/S0144-8617(00)00324-6
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Equilibrium data were obtained for polypropylene glycol, PPG (400 and 3500)/maltodextrin, MD (1000 and 2000) aqueous two-phase systems at 25 degreesC. Four tie lines were measured for each system. The MD concentration in top phase is very small, and in some cases MD is almost excluded from this phase. The non random two-liquid (NRTL) model was used to correlate the equilibrium data. The partitioning behaviour of bovine serum albumin (BSA), alpha -lactoalbumin (alpha -La) and beta -lactoglobulin (beta -Lg) was studied in PPG 400/MD systems at 25 degreesC. For most cases the proteins partition preferentially to the top phase. (C) 2001 Elsevier Science Ltd. All fights reserved.
引用
收藏
页码：267 / 274
页数：8
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