Abstract：
:Polyethylene glycol (PEG) is widely used in the polymer-salt systems. However, the low polarity of the PEG-rich phase limits the application of aqueous biphasic systems (ABS). To overcome this disadvantage, a small quantity of ionic liquid (IL) was used as an adjuvant in ABS to enlarge the polarity range. Therefore, an innovative study involving addition of 4wt% imidazolium-based ILs to the PEG 600/NaH2PO4 ABS, aiming at controlling the phase behavior and extraction ability, was carried out. The phase diagrams, the tie-lines and the partitioning behavior of l-phenylalanine and ILs were studied in these systems. The results reveal that l-phenylalanine preferentially partitions for the PEG-rich phase. The addition of 4wt% IL to ABS controls the partitioning behavior of l-phenylalanine, which depends on the type of IL employed. Moreover, it is verified that increasing temperature lead to a decrease in the partition coefficient of l-phenylalanine.
journal_name
Food Chemjournal_title
Food chemistryauthors
Yang H,Chen L,Zhou C,Yu X,Yagoub AEA,Ma Hdoi
10.1016/j.foodchem.2017.10.110subject
Has Abstractpub_date
2018-04-15 00:00:00pages
346-352eissn
0308-8146issn
1873-7072pii
S0308-8146(17)31748-Xjournal_volume
245pub_type
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