Biorefining brewery spent grain polysaccharides through biotuning of ionic liquids

Outeiriño, David; Costa-Trigo, Iván; Paz, Alicia; Deive, Francisco J.; Rodríguez, Ana; Domínguez, José Manuel

doi:10.1016/j.carbpol.2018.09.042

Cited by 27 publications

(18 citation statements)

References 46 publications

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“…One option in this respect may be pretreatment with ion fluids, followed by enzymatic hydrolysis. Delignification with cholinium-based ionic liquids was achieved with a yield of 75.89% compared to traditional delignification with imidazole with a yield of 40.18% [39].…”

Section: Bsg Used As a Substratementioning

confidence: 96%

Brewer’s Spent Grains: Possibilities of Valorization, a Review

Chetrariu

Dabija

2020

Applied Sciences

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This review was based on updated research on how to use brewer’s spent grains (BSG). The use of BSG was considered both in food, as an ingredient or using value-added components derived from brewer’s spent grain, or in non-food products such as pharmaceuticals, cosmetics, construction, or food packaging. BSG is a valuable source of individual components due to its high nutritional value and low cost that is worth exploiting more to reduce food waste but also to improve human health and the environment. From the bioeconomy point of view, biological resources are transformed into bioenergetically viable and economically valuable products. The pretreatment stage of BSG biomass plays an important role in the efficiency of the extraction process and the yield obtained. The pretreatments presented in this review are both conventional and modern extraction methods, such as solvent extractions or microwave-assisted extractions, ultrasonic-assisted extractions, etc.

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Section: Bsg Used As a Substratementioning

confidence: 96%

Brewer’s Spent Grains: Possibilities of Valorization, a Review

Chetrariu

Dabija

2020

Applied Sciences

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“…This is likely a consequence of effective lignin removal which provided more surface for enzymes to digest. 88…”

Section: Applicationsmentioning

confidence: 99%

Design and applications of biocompatible choline amino acid ionic liquids

Miao

Warr

2022

Green Chem.

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“…Such waste is usually not reinserted in the process, making it a potentially viable source for the exploration of new resources, such as for the production of animal feed, due to its high nutritional value and its low acquisition cost, in the production of handcrafted bread, among other destinations (LOPES et al, 2015). Additionally, several studies have proposed alternatives to convert this residue to add value, such as in biogas production (PANJIČKO et al, 2017), detoxification of liquid waste (MAITI et al, 2017), in obtaining biofuels in biorefineries (OUTEIRIÑO et al, 2019), in biodegradable foam trays (MELLO; MALI, 2014), as well as studies involving its use as an adsorbent in dyes (FONTANA;CECHINEL, 2016;FRANCISKI et al, 2018;MILDEMBERG, 2019;SAFARIK;HORSKA;SAFARIKOVA, 2011).…”

Section: Introductionmentioning

confidence: 99%

Preliminary study on the characterization of in natura malt residue from a brewery for potential use as an adsorbent in removing Reactive red 120 from aqueous solution

Bortoli

Bachmann

Beltrame

2022

CeN

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Malt residue is the main by-product of the brewing process and representing around 85% of the by-products generated in this segment. Due to its abundance and considering the high development of the beer market in recent years in Brazil and worldwide, there is also great concern regarding environmental issues to its final disposal, making it necessary to develop alternatives that generate products of greater added value and that can reduce environmental impacts. Given the growing demand for alternative adsorbents, especially for agro-industrial residues, this study aimed to carry out a preliminary characterization of malt residue to assess its potential as in natura adsorbent, to add value to the residue as well and to contribute to the mitigation of impacts on the environment. The malt residue was dried, ground, and classified, and this material was given the name of fresh malt residue (RMIN). For the characterization of RMIN, pH stability test analysis, zero charge point (pHPCZ), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) were performed. After characterization, preliminary adsorption tests were carried out to remove a textile dye, in this case, Reactive red 120. As a result of the characterization analyses, the malt has a relatively stable pH when in aqueous suspension and the value pHPCZ found, was close to neutral, thus demonstrating the potential for removal of acidic substances. The result of the thermogravimetric analysis shows mass losses in temperature ranges characteristic of the presence of lignocellulosic compounds that make up the malt, which is corroborated by the results of the FTIR analysis, since the spectra revealed the presence of functional groups, such as group hydroxyl, carbonyl group, alkanes, and alkenes, related to the presence of cellulose, hemicellulose, and lignin. These functional groups can interact with the groups of the Reactive red dye 120 molecule, helping to remove them from an aqueous solution. Through SEM analysis it was possible to observe morphological changes when comparing the adsorbent particles before and after the adsorption process. The potential as an in natura adsorbent was evaluated through preliminary tests of adsorption, followed by filtration, whose system showed 30% removal. However, studies to determine the optimal adsorption conditions, kinetic and isotherm studies, and thermodynamic studies are still necessary to better understand the phenomenon. Studies to determine the useful life of the RMIN, as well as studies in pilot units or continuous systems, are also still needed to enable its use on a larger scale.

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Biorefining brewery spent grain polysaccharides through biotuning of ionic liquids

Cited by 27 publications

References 46 publications

Brewer’s Spent Grains: Possibilities of Valorization, a Review

Brewer’s Spent Grains: Possibilities of Valorization, a Review

Design and applications of biocompatible choline amino acid ionic liquids

Preliminary study on the characterization of in natura malt residue from a brewery for potential use as an adsorbent in removing Reactive red 120 from aqueous solution

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