Aqueous two-phase systems based on acetonitrile and carbohydrates and their application to the extraction of vanillin

Sugaring-out-assisted aqueous two-phase extraction of fructooligosaccharides from yacon (Smallanthus sonchifolius)

“…[17] This new extraction technique has been successfully applied to extract furfural, 5-hydroxymethyl furfural (HMF), ferulic acid, syringic acid, para-coumaric acid, phenolics, and vanillin. [18][19][20] In previous experiments, we observed the stable two-phase system when adding acetonitrile into the water extract of yacon roots. It is interesting to find that most of FOS was extracted into the ACN-top phase, due to the high sugar concentration in the water extract of yacon roots, with no extra sugar needed to be added.…”

Enantioselective extraction of phenylsuccinic acid in aqueous two-phase systems based on acetone and β -cyclodextrin derivative: Modeling and optimization through response surface methodology

“…Binodal curve, which divides acetone-ˇ-CD derivative-water system into two parts (a mixed phase system and a two-phase system), was determined by the turbidimetric titration method [17]. Firstly, -CD derivatives were dissolved in 5 mL water to prepare stock solutions with different weight percentages (5.0-40.0 wt %).…”

Current applications of different type of aqueous two-phase systems

“…A technique to use mono-and disaccharides to prepare novel ATPS has been developed recently. One of these studies was carried out by de Brito Cardoso et al (2013) where acetonitrile and carbohydrates are used to prepare ATPS. Acetonitrile is a colourless aprotic solvent and it forms homogeneous mixture when it is mixed with water.…”

“…The carbohydrates molecules [general formula of (CH 2 O)x] are non-charged. They are biodegradable, non-toxic and renewable feedstock and show an inherent salting-out character (de Brito et al 2013). The acetonitrile/carbohydrate system has been applied to partition the common antioxidant, vanillin.…”