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Countercurrent assisted quantitative recovery of metabolites from plant-associated natural deep eutectic solvents.

Abstract：

:NAtural Deep Eutectic Solvents (NADES) are chemically simple but physiologically important plant constituents that exhibit unique solubilizing properties of other metabolites, including bioactive constituents. The high polarity of NADES introduces a challenge in the ability of conventional solid-support based chromatography to recover potential bioactive metabolites. This complicates the systematic explanation of the NADES' functions in botanical extracts. The present study utilizes countercurrent separation (CCS) methodology to overcome the recovery challenge. To demonstrate its feasibility, Glucose-Choline chloride-Water (GCWat, 2:5:5, mole/mole) served as a model NADES, and four widely used marker flavonoids with different polarities (rutin, quercetin, kaempferol, and daidzein) were chosen as model target analytes. In order to prepare GCWat with high consistency, a water drying study was performed. The unique capabilities of the recently introduced CherryOne system, offering volumetric phase metering, were used to monitor the CCS operations. The collected fractions were analyzed using UHPLC and NMR/quantitative NMR. CCS was able to recover the analytes from the NADES matrix with quantitative recoveries of 95.7%, 94.6%, 97.0%, and 96.7% for rutin, quercetin, kaempferol, and daidzein respectively. The CCS strategy enables recovery of target metabolites from NADES-containing crude extracts as well as from other chemical mixtures, and moreover offers a means of using NADES as environmentally friendly extraction solvents.

journal_name

Fitoterapia

journal_title

Fitoterapia

authors

Liu Y,Garzon J,Friesen JB,Zhang Y,McAlpine JB,Lankin DC,Chen SN,Pauli GF

doi

10.1016/j.fitote.2016.04.019

subject

Has Abstract

pub_date

2016-07-01 00:00:00

pages

30-37

eissn

0367-326X

issn

1873-6971

pii

S0367-326X(16)30093-4

journal_volume

112

pub_type

杂志文章

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