Journal
JOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume 68, Issue 9, Pages 2398-2406Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jced.3c00383
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By introducing carbohydrates as adjuvants, the concentration of the ionic liquid (IL) as a phase-forming component was significantly reduced in a polypropylene glycol (PPG#400)-based aqueous biphasic system (ABS). The ABS tailored with D-mannitol as an adjuvant was chosen for further extraction of polyphenols (rutin and morin), where approximately 75% of rutin and 91% of morin were extracted in the PPG#400-rich phase of the ABS.
Polypropylene glycol (PPG#400) and an ionic liquid (IL),tris(2-hydroxyethyl)methylammonium methylsulfate-based aqueous biphasic system (ABS) has beenconstructed. The high concentration of the IL as one of the phase-formingcomponents can make the ABS toxic and at the same time expensive.Thus, to decrease the phase-forming concentration of the IL, carbohydrateshave been introduced as adjuvants. By tailoring the ABS with the helpof carbohydrates, a dramatic decrease in the phase-forming concentrationof IL was observed. The required concentration of the IL reduced from80% (w/w) to & LE;20% (w/w) to form an ABS with PPG#400. Theseobservations are justified on the basis of theoretical calculations.The ABS tailored with d-mannitol as an adjuvant was chosenfor further applications. The present work reports on the use of thenewly designed ABS toward extraction of polyphenols such as rutinand morin. & SIM;75% of rutin and & SIM;91% of morin were extractedin the PPG#400-rich phase of ABS.
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