Determination of Polyphenols and Vitamins in Wine-Making by-Products by Supercritical Fluid Extraction (SFE)

Aresta, Antonella; Cotugno, Pietro; Vietro, Nicoletta De; Massari, Federica; Zambonin, Carlo

doi:10.1080/00032719.2020.1749846

Cited by 34 publications

(33 citation statements)

References 35 publications

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“…On this ground, supercritical fluid extraction (SFE) used as a sample preparation and purification step for analytical purposes provides several advantages compared to conventional extraction methods since it uses supercritical fluids (SFCs), such as carbon dioxide, methanol, ethane, n-pentane, ethene, and n-butene. Their physicochemical properties can be modified by controlling pressure and temperature, with or without a cosolvent, usually ethanol [ 27 , 28 ], to recover bioactive molecules from different matrices [ 8 ]. Since carbon dioxide is not dangerous for human health, is generally recognized as safe (GRAS) by FDA (Food and Drug Administration) and EFSA (European Food Safety Authority), and is environment friendly, it is the most employed supercritical fluid, even in large-scale systems, to obtain a pure product, without traces of solvent and in a small amount of time.…”

Section: Introductionmentioning

confidence: 99%

Supercritical CO2 Extraction of Phytocompounds from Olive Pomace Subjected to Different Drying Methods

et al. 2021

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Olive pomace is a semisolid by-product of olive oil production and represents a valuable source of functional phytocompounds. The valorization of agro-food chain by-products represents a key factor in reducing production costs, providing benefits related to their reuse. On this ground, we herein investigate extraction methods with supercritical carbon dioxide (SC-CO2) of functional phytocompounds from olive pomace samples subjected to two different drying methods, i.e., freeze drying and hot-air drying. Olive pomace was produced using the two most common industrial olive oil production processes, one based on the two-phase (2P) decanter and one based on the three-phase (3P) decanter. Our results show that freeze drying more efficiently preserves phytocompounds such as α-tocopherol, carotenoids, chlorophylls, and polyphenols, whereas hot-air drying does not compromise the β-sitosterol content and the extraction of squalene is not dependent on the drying method used. Moreover, higher amounts of α-tocopherol and polyphenols were extracted from 2P olive pomace, while β-sitosterol, chlorophylls, and carotenoids were more concentrated in 3P olive pomace. Finally, tocopherol and pigment/polyphenol fractions exerted antioxidant activity in vitro and in accelerated oxidative conditions. These results highlight the potential of olive pomace to be upcycled by extracting from it, with green methods, functional phytocompounds for reuse in food and pharmaceutical industries.

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Section: Introductionmentioning

confidence: 99%

Supercritical CO2 Extraction of Phytocompounds from Olive Pomace Subjected to Different Drying Methods

et al. 2021

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“…The assay was performed according to a slightly modified literature protocol [ 62 ]. An aliquot (0.05 mL) of each sample in dimethyl sulfoxide (i.e., either raw milk (diluted 1:10, v / v ) or the lipid fractions obtained by the solvent or the nonsolvent method at levels of 50 and 200 mg/mL, respectively)) was transferred to a test tube containing 0.95 mL of an ethanolic solution of 0.08 mM DPPH (2,2-diphenyl-1-picrylhydrazyl, Sigma-Aldrich, St. Louis, MO, USA) (S) or pure ethanol (B).…”

Section: Methodsmentioning

confidence: 99%

Determination of Commercial Animal and Vegetable Milks’ Lipid Profile and Its Correlation with Cell Viability and Antioxidant Activity on Human Intestinal Caco-2 Cells

et al. 2021

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Lipids from milk are important nutritional components, although their health effects, especially for animal milks, are still questioned. Four types of commercial milks, two semi-skimmed animal milks (bovine and goat) and two vegetable ones (soy and rice), along with their total and free lipid fractions recovered by sequential centrifugation or by ethyl acetate extraction, respectively, have been analyzed. A higher antioxidant ability, reported as Trolox equivalent antioxidant capacity, was found for all raw milks compared to that of rice. This trend was confirmed, except for soy milk, as ROS reduction in Caco-2 cells. The free lipid fraction was shown to have the highest antioxidant potential in both chemical and biological tests. Moreover, goat and soy raw milks positively regulated Caco-2 cell viability after an inflammatory stimulus. This effect was lost when their total lipid fraction was tested. Finally, only the free lipid fraction from rice milk preserved the Caco-2 viability after LPS stimulation. Our data demonstrated that the lipid profile of each milk, characterized by GC-MS analysis, could contribute to dictate its biological effects, and, although additional in vitro and in vivo studies are needed, they could support the literature re-evaluating the health effects of animal-based versus plant-based milks in the intestinal cellular model.

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“…The extraction rate of polyphenols was 3.25% and the content was 14.56 mg/g. Aresta et al [56] found that SFE showed higher recoveries when compared to the conventional solid-liquid extraction processes (including transresveratrol, β-sitosterol, α-tocopherol (vitamin E), and ascorbic acid (vitamin C)), except for β-sitosterol and α-tocopherol from seeds, which require a concentrated extraction cycle. Phan et al [57] used SFE to extract polyphenols from Vietnamese Callisia fragrans (C. fragrans) with the following optimal extraction conditions: ethanol concentration of 14%, CO 2 flow rate of 20 g/min, extraction temperature of 45°C, and pressure of 200 bar, and reported that SFE is suitable for industrial production.…”

Section: Supercritical Fluid Extractionmentioning

confidence: 99%

Recent Technologies for the Extraction and Separation of Polyphenols in Different Plants: A Review

Hu¹,

Yan²,

Chen³

et al. 2022

Journal of Renewable Materials

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Determination of Polyphenols and Vitamins in Wine-Making by-Products by Supercritical Fluid Extraction (SFE)

Cited by 34 publications

References 35 publications

Supercritical CO2 Extraction of Phytocompounds from Olive Pomace Subjected to Different Drying Methods

Supercritical CO2 Extraction of Phytocompounds from Olive Pomace Subjected to Different Drying Methods

Determination of Commercial Animal and Vegetable Milks’ Lipid Profile and Its Correlation with Cell Viability and Antioxidant Activity on Human Intestinal Caco-2 Cells

Recent Technologies for the Extraction and Separation of Polyphenols in Different Plants: A Review

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