Synergistic ultrasound pulsed electric field extraction of litchi peel polyphenols and determination of their properties

Tan, Ming-Jun; Li, Ying; Zhao, Si-Qi; Yue, Fu-Hao; Cai, Die-Jia; Wu, Jin-Tao; Zeng, Xin-An; Li, Jian; Han, Zhong

doi:10.1016/j.ijbiomac.2024.129613

Cited by 5 publications

(2 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, excessive temperature would cause TPC degradation, as most polyphenols are heat-sensitive. Ming-Jun et al proved that high temperatures were detrimental to the extraction of polyphenols [ 38 ]. Alimpia et al [ 39 ] explored that the optimal extraction temperature for polyphenols was 60 °C, but further increases in the extraction temperature did not increase the same.…”

Section: Resultsmentioning

confidence: 99%

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

Li,

Lv,

Wang

et al. 2024

Molecules

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

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

Li,

Lv,

Wang

et al. 2024

Molecules

View full text Add to dashboard Cite

show abstract

“…Gallic acid was used to prepare a calibration standard curve (y = 3.7993x − 0.0077, R 2 = 0.99) using 10 different concentrations in methanol ranging from 0.01 to 600 ppm, and dilution factors of 2 and 10 with three replicates at each concentration. The results were expressed as milligrams of gallic acid equivalents per gram of dry weight of the herbal matrix (mg GAE/g DW) [45].…”

Section: Total Polyphenol Contentmentioning

confidence: 99%

Optimization and Validation of Procyanidins Extraction and Phytochemical Profiling of Seven Herbal Matrices of Nutraceutical Interest

Keivani,

Piccolo,

Marzocchi

et al. 2024

Antioxidants

View full text Add to dashboard Cite

Several medicinal herbal plants are extensively used as sources of bioactive compounds with beneficial effects on human health. This study assessed the procyanidin and polyphenol profiles together with the antioxidant potential of seven herbal medical matrices. To achieve this aim, procyanidin extraction from grape pomace was optimized and validated by monitoring monomeric-trimeric procyanidins. The proposed quantification method was applied to the seven medical herbs, and it proved to be a very efficient protocol for procyanidin-rich extracts analysis. In addition, the Paullinia cupana Kunth. seed was identified as a very rich source of procyanidins (about 5 mg/g dry matrix of each dimeric and about 3 mg/g dry matrix trimeric) with high antioxidant properties. The polyphenolic profile was assessed by HPLC-HESI-MS/MS analysis. The in vitro antioxidant activity was evaluated by DPPH assay to explore the antioxidant properties of the extracts, which were substantially higher in Peumus boldus Molina leaves extracts (935.23 ± 169 μmol of Trolox equivalent/g of dry weight) concerning the other matrices. Moreover, a high Pearson coefficient value was observed between the total flavonoid content (TFC) and DPPH in comparison with the total polyphenol content (TPC) and DPPH, indicating flavonoids as the principal bioactive with antioxidant activity in the extracts.

show abstract

Antioxidant and prooxidant activity of acid‐hydrolyzed phenolic extracts of sugar beet leaves in oil‐in‐water emulsions

Ebrahimi,

Bayram,

Lante

et al. 2024

J Americ Oil Chem Soc

View full text Add to dashboard Cite

This study aimed to enhance the oxidative stability of soybean oil‐in‐water emulsions using acid‐hydrolyzed and unhydrolyzed extracts obtained from sugar beet leaves. The optimum extraction process, which includes 8 min of ultrasonication followed by a 2‐h acid hydrolysis, released new phenolics (e.g., catechin, myricetin, etc.) and increased the total phenolic content (TPC) from 586.24 ± 11.45 to 982.42 ± 6.61 μmol gallic acid equivalent (GAE)/L, and 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) radical inhibition from 46.63 ± 1.39 to 60.87 ± 1.12%. Acid hydrolysis increased the cupric chelating activity of the extracts while decreasing ferrous chelating activity and trans‐ferulic acid concentration significantly (p < 0.05). The acid‐hydrolyzed extract at a TPC of 100 μmol GAE/L prolonged the lag phase of hexanal accumulation in the emulsion from 0 to 8 days, while 400 μmol GAE/L TPC of unhydrolyzed extract increased the lag phase to 12 days. The results show that acid‐hydrolyzed extracts in high concentrations may act as prooxidants.

show abstract

Synergistic ultrasound pulsed electric field extraction of litchi peel polyphenols and determination of their properties

Cited by 5 publications

References 29 publications

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

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

Optimization and Validation of Procyanidins Extraction and Phytochemical Profiling of Seven Herbal Matrices of Nutraceutical Interest

Antioxidant and prooxidant activity of acid‐hydrolyzed phenolic extracts of sugar beet leaves in oil‐in‐water emulsions

Contact Info

Product

Resources

About