Subcritical Water for the Extraction and Hydrolysis of Protein and Other Fractions in Biorefineries from Agro-food Wastes and Algae: a Review

Álvarez-Viñas, Milena; Rodríguez-Seoane, Paula; Flórez‐Fernández, Noelia; Torres, María Dolores; Díaz-Reinoso, Beatriz; Moure, Andrés; Domı́nguez, Herminia

doi:10.1007/s11947-020-02536-4

Cited by 60 publications

(18 citation statements)

References 140 publications

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“…In general, in comparison with conventional alkali or enzymatic hydrolysis, SW provides comparable or higher yields in shorter times. In a very recent contribution, Álvarez-Viñas et al (2021) reviewed the most important features in the SWE/hydrolysis of proteins, the different modes of operation, and analyzed the effect of process conditions on the product properties [22]. The authors highlighted the necessity of establishing optimal conditions as a compromised solution for processing proteins derived from agro-food wastes and algal biomass, suggesting that could be desirable in the stage wise operation to sequentially obtain high-valued fractions.…”

Section: Subcritical Water Extraction (Swe)mentioning

confidence: 99%

A Review on the Extraction and Processing of Natural Source-Derived Proteins through Eco-Innovative Approaches

2021

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In addition to their nutritional and physiological role, proteins are recognized as the major compounds responsible for the rheological properties of food products and their stability during manufacture and storage. Furthermore, proteins have been shown to be source of bioactive peptides able to exert beneficial effects on human health. In recent years, scholarly interest has focused on the incorporation of high-quality proteins into the diet. This fact, together with the new trends of consumers directed to avoid the intake of animal proteins, has boosted the search for novel and sustainable protein sources and the development of suitable, cost-affordable, and environmentally friendly technologies to extract high concentrations of valuable proteins incorporated into food products and supplements. In this review, current data on emergent and promising methodologies applied for the extraction of proteins from natural sources are summarized. Moreover, the advantages and disadvantages of these novel methods, compared with conventional methods, are detailed. Additionally, this work describes the combination of these technologies with the enzymatic hydrolysis of extracted proteins as a powerful strategy for releasing bioactive peptides.

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Section: Subcritical Water Extraction (Swe)mentioning

confidence: 99%

A Review on the Extraction and Processing of Natural Source-Derived Proteins through Eco-Innovative Approaches

2021

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“…Physical methods of protein extraction include ultrasound-assisted, microwave-assisted, hydrothermal, , supercritical fluid, mechanical fractionation, and ultrafine milling with electrostatic separation as the most conventional method for lignocellulosic materials . Contreras et al reviewed physical protein extraction methods from agricultural and food residues based on dry and nondry extraction conditions and use of different protein extraction/recovery methods .…”

Section: Upstream Nitrogen Recovery From Biomassmentioning

confidence: 99%

“…Protein yields, enzymes used, and optimized extraction parameters were reviewed by Contreras et al and Nadar et al A combination of enzyme-assisted extraction with physical extraction often increases extraction efficiency (and economic viability) depending on cell wall rigidity, chemical composition, protein structure, and storage conditions . Enzyme-assisted processes can be performed under mild conditions (pH of 6–8 and temperatures of 40–60 °C) without the presence of toxic chemicals and to the desired degree of hydrolysis …”

Section: Upstream Nitrogen Recovery From Biomassmentioning

confidence: 99%

“…Extraction of the protein allowed for a higher C/N ratio and lower ash content in the hydrochar . Integrated protein extraction with pyrolysis has been explored for microalgae and sewage sludge with promising results, ,,, but little is available on the pretreatment of lignocellulosic biomass to remove protein before pyrolysis.…”

Section: Conversion Pathways For Low-cost N-containing Biomassmentioning

confidence: 99%

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Recovery of Nitrogen from Low-Cost Plant Feedstocks Used for Bioenergy: A Review of Availability and Process Order

et al. 2021

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The cost of feedstock is often a major barrier to commercialization for lignocellulosic biofuels. Much of the research on biofuel and biobased chemical production has focused on the carbohydrate, lignin, and lipid components of biomass. There are numerous opportunities for the use of lower-cost feedstocks if more attention were devoted to the recovery and utilization of the protein and other N-containing components. This review compiles data from the last two decades on nonedible/ nonpalatable agricultural residues, deoiled seedcakes, bioethanol and biogas residues, and food wastes, with a focus on the amounts and types of N-containing components. Given the challenges of removing N-containing compounds from biofuel intermediates postconversion, a case is made for the extraction and purification of proteins (and other N-containing compounds) from low-cost lignocellulosic biomass before conversion to fuel. The goal of such processes is to avoid difficult fuel upgrading steps while enhancing the opportunities for additional biorefinery products and sustainable nitrogen cycles.

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“…The integration of this process in a biorefinery process would allow the valorization of the exhausted solids [ 27 ]. Subcritical water processing has been proposed as a green technique suitable for the extraction of protein, polysaccharides and phenolics from vegetal and algal biomass [ 28 ]. Furthermore, intensification with microwave heating has proved successful for the rapid extraction of carrageenan and phenolic compounds from Mastocarpus stellatus [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Fatty Acids and Phenolics from Mastocarpus stellatus Using Pressurized Green Solvents

et al. 2021

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Polyunsaturated fatty acids are well known for their protective properties in relation to different skin diseases. Although seaweeds possess a low lipid fraction, they could act as an alternative renewable source of polyunsaturated fatty acids whenever other valuable seaweed components are also valorized. In this study, a biorefinery process using Mastocarpus stellatus as a model seaweed was proposed. The process started with the supercritical carbon dioxide extraction of the lipid and phenolic fractions. The influence of pressure during extraction with pure supercritical CO2 was studied while operating at a selected temperature and solvent flow rate. Kinetic data obtained during the ethanol-modified supercritical CO2 extraction were fitted to the spline model. Sequential processing was proposed with (i) pure CO2 to obtain a product with 30% PUFA content and ω-3:ω-6 ratio 1:1, (ii) ethanol-modified CO2 to extract phenolics, and (iii) microwave-assisted subcritical water extraction operating under previously optimized conditions for the extraction of phenolics, carrageenan and protein fractions. The composition of the supercritical extracts showed potential for use in both dietary and topical applications in skin care products. The remaining solids are suitable for the extraction of other valuable fractions.

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Subcritical Water for the Extraction and Hydrolysis of Protein and Other Fractions in Biorefineries from Agro-food Wastes and Algae: a Review

Cited by 60 publications

References 140 publications

A Review on the Extraction and Processing of Natural Source-Derived Proteins through Eco-Innovative Approaches

A Review on the Extraction and Processing of Natural Source-Derived Proteins through Eco-Innovative Approaches

Recovery of Nitrogen from Low-Cost Plant Feedstocks Used for Bioenergy: A Review of Availability and Process Order

Extraction of Fatty Acids and Phenolics from Mastocarpus stellatus Using Pressurized Green Solvents

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