Ionic liquid-based cloud-point extraction of quercetin for its sensitive HPLC–UV determination in juice samples

Rasoolzadeh, Fahimeh; Hashemi, Payman; Serenjeh, Fariba Nazari

doi:10.1556/1326.2016.28205

Cited by 13 publications

(5 citation statements)

References 27 publications

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“…The performance of this proposed method was evaluated by a comparison with different extraction methods developed with HPLC in terms of the LOD, LOQ, average recovery, and linear range (Table 3) [32,33,34,35].…”

Section: Resultsmentioning

confidence: 99%

Application of Natural Deep Eutectic Solvents in the Extraction of Quercetin from Vegetables

Dai

Row

2019

Molecules

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Quercetin is a phytochemical with disease prevention and health promotion activities that has attracted significant research attention. In this study, choline chloride and betaine-based natural deep eutectic solvents were prepared using a heating method. Their physical and chemical properties were also tested. Then, they were applied to extract quercetin from onion and broccoli with ultrasonic-assisted solid liquid method coupled with HPLC. Three factors (temperature, amount, and time) were considered for the optimization of the extraction assays. In the optimal conditions, the extraction recoveries were 88.91–98.99%, 88.45–99.01%, and 89.56–98.74% for quercetin, isorhamnetin, and kaempferol. Tailor-made natural deep eutectic solvents could be applied as sustainable and safe extraction media for biochemical applications.

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Section: Resultsmentioning

confidence: 99%

Application of Natural Deep Eutectic Solvents in the Extraction of Quercetin from Vegetables

Dai

Row

2019

Molecules

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“…The surfactant concentration is a critical factor for CPE and directly affects the extraction efficiency . When the concentration is low, the extraction would be incomplete; however, the increase of the concentration may disturb the subsequent determination .…”

Section: Resultsmentioning

confidence: 99%

“…The surfactant concentration is a critical factor for CPE and directly affects the extraction efficiency. 27 When the concentration is low, the extraction would be incomplete; however, the increase of the concentration may disturb the subsequent determination. 22 The relationship between the concentration of the surfactant and the extraction recovery was studied carefully, and the results are shown in Figure 2a.…”

Section: Resultsmentioning

confidence: 99%

Facile Cloud Point Extraction for the Separation and Determination of Phenolic Acids from Dandelion

et al. 2021

ACS Omega

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It is significantly crucial to develop a robust pretreatment for the quantitative analysis of herbs. However, the traditional strategies are time-consuming, tedious, and not eco-friendly. In this work, cloud point extraction (CPE) is engineered for the simultaneous separation and enrichment of ferulic acid (FA), chlorogenic acid (CLA), and caffeic acid (CA) from dandelion prior to its determination by high-performance liquid chromatography (HPLC). A famous nonionic surfactant of Triton X-114 was selected as an extractant of CPE, and parameters affecting the extraction, such as surfactant concentration, salt content, pH value, temperature, and incubation time, were investigated carefully. Furthermore, the well-designed CPE with ultrasonic assistance combined with HPLC was developed for the detection of the target analytes in dandelion. The established method having a good linearity in the range of 0.15–26.2 mg L–1 with R 2 more than 0.9979 and the spiked recoveries ranging from 81 to 96% was applied to test real samples of dandelion. The contents of CA in samples were consistent with those assayed by the method (Chinese Pharmacopoeia 2015). The proposed method afforded good analytical performances, shorter pretreatment time (65 min), and less organic solvent consumption (less than 1.0 mL). It was proved that the developed method presented a facile, inexpensive, efficient, and environment-friendly pretreatment and can be used for the quantitative analysis of CLA, CA, and FA in dandelion. As expected, the proposed method would be a promising potential for the quality analysis of herbal medicines.

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“…Since it directly affects extraction efficiency, surfactant concentration is a crucial factor in CPE [35,36]. e extraction is only partially effective when the concentration is low, but raising the concentration could affect the outcome of the analysis [37].…”

Section: Properties Of Dilute Phase and Coacervatementioning

confidence: 99%

Experimental Design and Optimization of Decolourization of Reactive Black-5 Dye Using Cloud Point Extraction

Ramachandran

Tolesa

Abdulkadir

et al. 2022

Journal of Chemistry

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A two-phase separation method called cloud point extraction (CPE) does not use hazardous or flammable organic solvents. The efficient removal of the dye Reactive Black-5 (RB-5) from an aqueous solution using Triton X-114, a nonionic surfactant, is described in this study. Three-level factorial design and response-surface methods were used to quantify the impact of process variables on the CPE process, such as operating temperature and surfactant concentration. Investigations were conducted into how these process variables affected the ratio between the phase volumes, the concentration of dye in the surfactant-rich phase, and the residual amounts of dye in the diluted phase. As a result, ANOVA was used to create and validate mathematical models. The findings demonstrated that the correlation coefficients (R2) exceeded 0.98. The acquired findings showed that the suggested extraction process is efficient, and the proposed CPE approach removes 98% of the RB-5 dye under optimal conditions.

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Ionic liquid-based cloud-point extraction of quercetin for its sensitive HPLC–UV determination in juice samples

Cited by 13 publications

References 27 publications

Application of Natural Deep Eutectic Solvents in the Extraction of Quercetin from Vegetables

Application of Natural Deep Eutectic Solvents in the Extraction of Quercetin from Vegetables

Facile Cloud Point Extraction for the Separation and Determination of Phenolic Acids from Dandelion

Experimental Design and Optimization of Decolourization of Reactive Black-5 Dye Using Cloud Point Extraction

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