Extraction and identification of polyphenol from Camellia oleifera leaves using tailor-made deep eutectic solvents based on COSMO-RS design

Feng, Shiling; Deng, Guanfeng; Liu, Huanyao; Shi, Haiqiu; Li, Pingjin; Li, Xiao; Chen, Tao; Zhou, Lijun; Yuan, Ming; Ding, Chunbang

doi:10.1016/j.foodchem.2024.138473

Cited by 10 publications

(2 citation statements)

References 36 publications

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“…It was reported that prolonged ultrasound time can also lead to the degradation or oxidation of polyphenols, resulting in a decrease in extraction efficiency [ 35 ]. This result was in agreement with those presented in previous research reports [ 36 ]. Thus, 30 min was selected as the most suitable extraction time for our experiment.…”

Section: Resultssupporting

confidence: 94%

“…The results indicated that polyphenols extracted by NADES might have better free radical scavenging ability than those extracted by ethanol and water. This result may be related to the efficient extraction of polyphenols and other antioxidant components from CSP by NADES [40], which was consistent with the results of Shiling Feng (2024) [36].…”

Section: Comparison Of Antioxidant Capacitysupporting

confidence: 90%

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Green Extraction of Polyphenols from Elaeagnus angustifolia L. Using Natural Deep Eutectic Solvents and Evaluation of Bioactivity

Li,

Lv,

Wang

et al. 2024

Molecules

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In the study, natural deep eutectic solvents (NADESs) were used as alternatives to traditional chemical solvents for the extraction of polyphenols from Elaeagnus angustifolia L. Nine NADESs were tested for the first time and compared with ethanol and water (traditional solvents) regarding the extraction of phenolic compounds from E. angustifolia L. These solvents were particularly effective at extracting polyphenols, whose low water solubility usually requires high amounts of organic solvents. The solvent based on choline chloride and malonic acid provided optimal results and was selected for further optimization. The effects of material-to-liquid ratio, ultrasound time, and ultrasound temperature on the extraction efficiency were studied through single-factor experiments. These parameters were optimized by Box–Behnken design using response surface methodology. The optimal conditions identified were 49.86 g/mL of material-to-liquid ratio, 31.10 min of ultrasound time, and 62.35 °C of ultrasound temperature, resulting in a high yield of 140.30 ± 0.19 mg/g. The results indicated that the NADES extraction technique provided a higher yield than the conventional extraction process. The antioxidant activity of the extract of polyphenols from E. angustifolia L. was determined, and UPLC–IMS–QTOF–MS was used to analyze the phenolic compounds in it. The results revealed that the scavenging ability of 1,1-diphenyl-2-picryl-hydrazil and 2,2′-azinobis-(3-ethylbenzthiazoline-6-sulphonate) extracted by NADES was higher than that of polyphenols extracted by water and ethanol. Furthermore, a total of 24 phenolic compounds were identified in the extract. To the best of our knowledge, this is the first study in which a green and efficient NADES extraction method has been used to extract bioactive polyphenols from E. angustifolia L., which could provide potential value in pharmaceuticals, cosmetics, and food additives.

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Section: Resultssupporting

confidence: 94%

Section: Comparison Of Antioxidant Capacitysupporting

confidence: 90%