Liquid-liquid extraction of phenolic compounds in systems based on acetonitrile + water + polyvinylpyrrolidone at 298.15 K

Antioxidant Compound Adsorption in Polyvinylpolypyrrolidone from Chilean Carménère, Cabernet Sauvignon, and Merlot Grape Pomaces as Potential By-Products

“…Synthetic polymers have been used to retain flavan-3-ol extracted from the variety Tempranillo GPs and for ultrafiltration to fractionate the PCs, allowing recoveries higher than 96% [ 45 ]. The liquid–liquid extraction using an aqueous two-phase system (ATPS) composed of acetonitrile/PVP/water has also been proposed for the partition of polyphenols using a mixture of pure compounds [ 46 ]. The ATPS is a promising alternative to separate polyphenol extracts but further studies must be done to favor the extraction of these compounds from GP residues.…”

Anion Effects on the Liquid-Liquid Equilibrium Behavior of Pluronic L64 + Water + Sodium Salts at Different pH: Determination of Thermodynamic Parameters

“…In those systems, phase separation occurs due to rapid mass transfer caused by low surface tension, providing selective separation without or with little denaturation [7]. Therefore, it is a non-aggressive technique for extracting biocompounds and does not influence the product of interest, presenting a favorable environment for biological compounds [8].…”

Graphene Oxide–Crospolyvinylpyrrolidone Hybrid Microspheres for the Efficient Adsorption of 2,4,6-Trichlorophenol

“… 1 − 3 PVP has also been shown to exhibit excellent adsorption properties for proteins and phenol compounds for food processing. 4 − 7 Consequently, cross-linked PVP (crospolyvinylpyrrolidone or PVPP) can be prepared from N -vinylpyrrolidone (NVP) and has been explored as an adsorbent for wastewater treatment. 8 PVPP hydrogels or copolymers of NVP and other monomers have also been investigated to remove pollutants from wastewater.…”

“…Polyvinylpyrrolidone (PVP) has been widely used in pharmaceutical and cosmetic industries because of its biocompatibility and nontoxicity. − PVP has also been shown to exhibit excellent adsorption properties for proteins and phenol compounds for food processing. − Consequently, cross-linked PVP (crospolyvinylpyrrolidone or PVPP) can be prepared from N -vinylpyrrolidone (NVP) and has been explored as an adsorbent for wastewater treatment . PVPP hydrogels or copolymers of NVP and other monomers have also been investigated to remove pollutants from wastewater. − Additionally, metal–organic frameworks were dispersed in PVPP to improve the adsorption efficiency for sewage treatment …”