Efficient separation of phenolic compounds from model oil by the formation of choline derivative-based deep eutectic solvents

Zhang, Yue; Li, Zhiyong; Wang, Jianji; Xuan, Xiaopeng

doi:10.1016/j.seppur.2016.03.014

Cited by 86 publications

(34 citation statements)

References 54 publications

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“…Hence, from a food safety point of view, many studies were carried out to address this problem in which organic acids were substituted for mineral acids in the pectin extraction process [5]. It was also inferred that deep eutectic solvents (DESs) are an excellent choice for extraction because they are non-volatile at room temperature and non-toxic [6], and the majority of DESs are water-miscible [7] depending on their components. Hydrophobic DESs were also used for industrial processes, for example, as extracting agents for furfural and its derivatives [8] and for separation [9].…”

Section: Introductionmentioning

confidence: 99%

Natural Deep Eutectic Solvent-Assisted Pectin Extraction from Pomelo Peel Using Sonoreactor: Experimental Optimization Approach

Elgharbawy

Hayyan

et al. 2019

Processes

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Background: Natural deep eutectic solvents (NADESs) can be used for extracting a wide range of biomaterials, such as pectin. This study introduces a new generation of natural solvents for pectin extraction which could replace the conventional solvents in the food industry. Methods: In this study, NADESs were used for pectin extraction from pomelo (Citrus grandis (L.) Osbeck) peels using a sonoreactor. Definitive screening design (DSD) was used to screen the influence of time, temperature, solid/liquid ratio, and NADES/water ratio on the pectin yield and degree of esterification (DE). Results: The primary screening revealed that the best choices for the extraction were choline chloride–malonic acid (ChCl-Mal) and choline chloride–glucose–water (ChCl:Glc:W). Both co-solvents yielded 94% pectin and 52% DE after optimization at 80 °C, with 60 min of sonication, pH < 3.0, and a NADES-to-water ratio of 1:4.5 (v/v). Morphological screening showed a smooth and compact surface of the pectin from ChCl-Mal where glucose-based pectin had a rough surface and lower DE. Conclusions: NADESs proved to be promising co-solvents for pectin extraction with a high degree of esterification (>55%).

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Section: Introductionmentioning

confidence: 99%

Natural Deep Eutectic Solvent-Assisted Pectin Extraction from Pomelo Peel Using Sonoreactor: Experimental Optimization Approach

Elgharbawy

Hayyan

et al. 2019

Processes

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“…With chlorophenol derivatives, the successfulness of the DES synthesis may be subjected to the different positions of chlorine atoms as HBD. The presence of a chlorine atom in the phenolic compounds reduced the electron density of the hydroxyl group thus increasing its acidity [ 29 ]. This will further enhance the ability to form hydrogen bonds with choline chloride.…”

Section: Resultsmentioning

confidence: 99%

Deep eutectic solvent-based emulsification liquid–liquid microextraction for the analysis of phenoxy acid herbicides in paddy field water samples

et al. 2021

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An emulsification liquid–liquid microextraction (ELLME) method was successfully developed using phenolic-based deep eutectic solvent (DES) as an extraction solvent for the determination of phenoxy acid herbicides, 3,6-dichloro-2-methoxybenzoic acid (dicamba) and 2-methyl-4-chlorophenoxyacetic acid (MCPA) in environmental water samples. Five different phenolics-based DESs were successfully synthesized by using phenol (DES 1), 2-chlorophenol (DES 2), 3-chlorophenol (DES 3), 4-chlorophenol (DES 4) and 3,4-dichlorophenol (DES 6) as the hydrogen-bond donor (HBD) and choline chloride as the hydrogen-bond acceptor (HBA). The DESs were mixed at 1 : 2 ratio. A homogeneous solution (clear solution) was observed upon the completion of successful synthesis. The synthesized DESs were characterized by using Fourier transform infrared and nuclear magnetic resonance (NMR). Under optimum ELLME conditions (50 µl of DES 2 as extraction solvent; 100 µl of THF as emulsifier solvent; pH 2; extraction time 5 min), enrichment factor obtained for dicamba and MCPA were 43.1 and 59.7, respectively. The limit of detection and limit of quantification obtained for dicamba were 1.66 and 5.03 µg l −1 , respectively, meanwhile for MCPA were 1.69 and 5.12 µg l −1 , respectively. The developed ELLME-DES method was applied on paddy field water samples, with extraction recoveries in the range of 79–91% for dicamba and 82–96% for MCPA.

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“…used choline derivative salts as new extractants for the separation of 26 kinds of phenolic compounds from model oil (toluene) by forming deep eutectic solvents (DESs). Only 16 kinds of phenolic compounds can be removed from toluene with a single‐step removal efficiency from 28.1 to 94.7%, which is strongly dependent on the chemical structure of phenolic compounds . In addition, DESs are also applied to the LLE of aromatics from an organic solvent mixture.…”

Section: Application Of Deep Eutectic Solvents In Separation and Extrmentioning

confidence: 99%

Development of deep eutectic solvents applied in extraction and separation

Row

2016

J of Separation Science

380

158

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Deep eutectic solvents, as an alternative to ionic liquids, have greener credentials than ionic liquids, and have attracted considerable attention in related chemical research. Deep eutectic solvents have attracted increasing attention in chemistry for the extraction and separation of various target compounds from natural products. This review highlights the preparation of deep eutectic solvents, unique properties of deep eutectic solvents, and synthesis of deep-eutectic-solvent-based materials. On the other hand, application in the extraction and separation of deep eutectic solvents is also included in this report. In this paper, the available data and references in this field are reviewed to summarize the applications and developments of deep eutectic solvents. Based on the development of deep eutectic solvents, an exploitation of new deep eutectic solvents and deep eutectic solvents-based materials is expected to diversify into extraction and separation.

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Efficient separation of phenolic compounds from model oil by the formation of choline derivative-based deep eutectic solvents

Cited by 86 publications

References 54 publications

Natural Deep Eutectic Solvent-Assisted Pectin Extraction from Pomelo Peel Using Sonoreactor: Experimental Optimization Approach

Natural Deep Eutectic Solvent-Assisted Pectin Extraction from Pomelo Peel Using Sonoreactor: Experimental Optimization Approach

Deep eutectic solvent-based emulsification liquid–liquid microextraction for the analysis of phenoxy acid herbicides in paddy field water samples

Development of deep eutectic solvents applied in extraction and separation

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