Overview of neoteric solvents as extractants in food industry: A focus on phenolic compounds separation from liquid streams

Cañadas, Raquel; González‐Miquel, María; González, Emilio J.; Díaz, Ismael; Rodríguez, Manuel

doi:10.1016/j.foodres.2020.109558

Cited by 54 publications

(22 citation statements)

References 167 publications

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“…Figure 6 shows the membrane process technology used for isolating polyphenolic compounds from a food sample. Studies done for polyphenol recovery from artichoke (Conidi et al 2014), wine lees (Giacobbo et al 2017) and other natural compounds (Cañadas et al 2020) have shown variation in improved recoveries with greater efficiencies. The processing of juices and liquid foods has also yielded useful health benefits and given higher recoveries when treated with membrane technology (Avram et al 2017).…”

Section: Membrane Separationmentioning

confidence: 99%

Techniques and modeling of polyphenol extraction from food: a review

et al. 2021

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There is a growing demand for vegetal food having health benefits such as improving the immune system. This is due in particular to the presence of polyphenols present in small amounts in many fruits, vegetables and functional foods. Extracting polyphenols is challenging because extraction techniques should not alter food quality. Here, we review technologies for extracting polyphenolic compounds from foods. Conventional techniques include percolation, decoction, heat reflux extraction, Soxhlet extraction and maceration, whereas advanced techniques are ultrasound-assisted extraction, microwave-assisted extraction, supercritical fluid extraction, high-voltage electric discharge, pulse electric field extraction and enzyme-assisted extraction. Advanced techniques are 32-36% more efficient with approximately 15 times less energy consumption and producing higher-quality extracts. Membrane separation and encapsulation appear promising to improve the sustainability of separating polyphenolic compounds. We present kinetic models and their influence on process parameters such as solvent type, solid and solvent ratio, temperature and particle size.

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Section: Membrane Separationmentioning

confidence: 99%

Techniques and modeling of polyphenol extraction from food: a review

et al. 2021

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“…For instance, according to standards for drinking water quality, the maximal permissible concentration of volatile phenols in aqueous solution is 0.002 mg L −1 in China, and 0.005 mg L −1 in Japan. In addition, the maximal accepted concentration of phenol in wastewater is 1 mg L −1 under European Union rules [8].…”

Section: Introductionmentioning

confidence: 99%

Amino Acid-Based Natural Deep Eutectic Solvents for Extraction of Phenolic Compounds from Aqueous Environments

Liu

et al. 2021

Processes

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The environmental pollution of phenol-containing wastewater is an urgent problem with industrial development. Natural deep eutectic solvents provide an environmentally friendly alternation for the solvent extraction of phenol. This study synthesized a series of natural deep eutectic solvents with L-proline and decanoic acid as precursors, characterized by in situ infrared spectrometry, Fourier transform infrared spectrometry, hydrogen nuclear magnetic resonance spectrometry, and differential thermogravimetric analysis. Natural deep eutectic solvents have good thermal stability. The high-efficiency extraction of phenol from wastewater by natural deep eutectic solvents was investigated under mild conditions. The effects of natural deep eutectic solvents, phenol concentration, reaction temperature, and reaction time on phenol extraction were studied. The optimized extraction conditions of phenol with L-prolin/decanoic acid were as follows: molar ratio, 4.2:1; reaction time, 60 min; and temperature, 50 °C. Extraction efficiency was up to 62%. The number of extraction cycles can be up to 6, and extraction rate not less than 57%. The promising results demonstrate that natural deep eutectic solvents are efficient in the field of phenolic compound extraction in wastewater.

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“…The most commonly used traditional organic solvents are ethanol, methanol, acetone, ethyl acetate and hexane. Taking the characteristics of this technique into consideration, it was seen that it could be used for the removal of phenolic compounds from wastewater, where the choice of solvent occurs according to the physicochemical properties of the phenolic compounds [65].…”

Section: Reprocessing Waste Containing Phenolic Compounds In Its Composition As a Sustainability Initiativementioning

confidence: 99%

“…Called neoteric solvents, their use minimizes environmental impacts, reuse of the solvent itself, reducing process costs, in addition to increasing the efficiency of removal of residual compounds. Neoteric solvents encompass ionic liquids, eutectic solvents, biologically-based solvents and supercritical fluids [65].…”

Section: Reprocessing Waste Containing Phenolic Compounds In Its Composition As a Sustainability Initiativementioning

confidence: 99%

Brazilian Caatinga: Phenolic Contents, Industrial and Therapeutic Applications

Amorim¹,

Cruz²,

Filho³

et al. 2022

Phenolic Compounds - Chemistry, Synthesis, Diversity, Non-Conventional Industrial, Pharmaceutical and Therapeutic Applications

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Phenolic compounds, mainly represented by flavonoids, tannins and coumarins, bioactive molecules with various applications, have antioxidant, photoprotective, antimicrobial, anti-inflammatory and even antitumor properties. The main mechanism of action of phenolic compounds is due to the transfer of electrons to free radicals, which leads to the interruption of oxidative reactions. The flora of the Brazilian caatinga is full of species with high concentrations of these compounds, which are possibilities for researching new pharmaceutical products and functional foods, and may even generate technological and economic impact, contributing directly or indirectly to the development of communities that are inserted in this context. This is extremely important, considering the large amount of ecotoxic residues resulting from the industrial chain, where it is necessary to use methods to reduce this impact on the environment, such as adsorption, oxidation, biotransformation, liquid–liquid partition and hybrid techniques. This shows the need to reuse this waste and even improve production processes in order to make the most of the content of these compounds with varied applications that sometimes end up being underused. This chapter brings some of the main species involved in this context, their contributions to health and possible applications at a technological, industrial and even sustainable level.

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Overview of neoteric solvents as extractants in food industry: A focus on phenolic compounds separation from liquid streams

Cited by 54 publications

References 167 publications

Techniques and modeling of polyphenol extraction from food: a review

Techniques and modeling of polyphenol extraction from food: a review

Amino Acid-Based Natural Deep Eutectic Solvents for Extraction of Phenolic Compounds from Aqueous Environments

Brazilian Caatinga: Phenolic Contents, Industrial and Therapeutic Applications

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