Bianca Santinon Scopel

Universidade de Caxias do Sul

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Aline Dettmer

Universidade de Passo Fundo

Camila Baldasso

Universidade de Caxias do Sul

Ruth Marlene Campomanes Santana

Universidade Federal do Rio Grande do Sul

Marcelo Godinho

Universidade de Caxias do Sul

Daniele Perondi

Universidade de Caxias do Sul

Elizete Baggio

Universidade de Caxias do Sul

Gabriela Carvalho Collazzo

Universidade Federal de Santa Maria

César Vinicius Toniciolli Rigueto

Universidade Federal de Santa Maria

Danielle Restelatto

Universidade de Caxias do Sul

Marieli Rosseto

Universidade Federal de Santa Maria

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Universidade de Caxias do Sul

Universidade Federal do Rio Grande do Sul

University of Rio Grande and Rio Grande Community College

Universidade de Passo Fundo

Universidade Federal de Santa Maria

Universidade Federal do Rio Grande

John Wiley & Sons (Germany)

Governo do Estado do Rio Grande do Sul

Max-Planck-Institut für Nachhaltige Materialien

Departamento de Ciência e Tecnologia

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Transglutaminase Effect on the Gelatin-Films Properties

Research Square (Research Square) (2021)

Elizete Baggio Bianca Santinon Scopel Marieli Rosseto Aline Dettmer Camila Baldasso

Abstract BACKGROUND : The development of biodegradable materials, especially those from renewable sources, is important to reduce the impact of plastic waste on the environment. On the other hand, protein-based films have high solubility in water, in addition to limited mechanical properties, which makes their application in high humidity environments a challenge. The enzyme transglutaminase (TGase) can reduce the interaction of gelatin films with water, improving these properties, while improving the mechanical properties. Therefore, this study aimed to determine the best condition for using the TGase enzyme, through variations in the gelatin and enzyme mass, in addition to the time that the enzyme acts on the gelatin, evaluating the properties tensile strength, elongation, and solubility in water. In a second set of experiments gelatin amount was kept fixed at 4%, and other proportions of an enzyme (1% and 5% w/w gelatin) were studied, evaluating beyond these properties the degradation in simulated soil through thermogravimetry analysis and Fourrier Transform Infrared Spectrometer (FTIR). RESULTS : It was concluded that the higher concentration of TGase (5%) promoted a greater reduction in the solubility of the films, making the films more resistant to biodegradation, facilitating their application due to the increase in their useful life. CONCLUSION : At the end of the degradation test, it was noticed that the films were degraded, presenting the potential for substitution of polymers of fossil origin, which could be an alternative to the problem of polymeric residues in the environment.

Gelatin

Tissue transglutaminase

Degradation

Elongation

10.21203/rs.3.rs-179633/v1

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Hydrolysis of Chromium Tanned Leather Waste: Turning Waste into Valuable Materials – A Review

Journal of the American Leather Chemists Association (2018)

Bianca Santinon Scopel Camila Baldasso Aline Dettmer Ruth Marlene Campomanes Santana

Among the reuse and/or disposal possibilities for chromiumtanned leather waste (CTLW), one in particular stands out:hydrolysis. This process not only allows chromium recovery, butalso the extraction of its protein, as collagen hydrolysate or asgelatin. CTLW hydrolysis has been performed for decades.However, industrial application of this important alternative hasnot been widespread. Thus, this review presents how CTLWalkaline hydrolysis has been evolving over the years; how theprocess can be adjusted to increase protein extraction yield andto produce better quality products. Finally, it reviews in whichareas its products have already been tested. Here, researchersmay find practical process information that might allow them tofocus on the most important current issue for CTLW hydrolysis:how to upgrade this process to an industrial scale.

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Gelatina extraída de resíduo de couro curtido ao cromo por meio de hidrólise alcalina assistida por explosão a vapor e sua aplicação em filmes poliméricos aplicados na agroindústria

Bianca Santinon Scopel

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Steam Explosion in alkaline medium for gelatine extraction from chromium-tanned leather wastes: time reduction and process optimization

Environmental Technology (2018)

Bianca Santinon Scopel Danielle Restelatto Camila Baldasso Aline Dettmer Ruth Marlene Campomanes Santana

Alkaline hydrolysis of chromium-tanned leather wastes (CTLW) is a well-known process that allows the extraction of its most valuable portion: the protein. However, alkaline hydrolysis is time-consuming. It usually takes from 2 to 10 h to be completed. In this work, alkaline hydrolysis was performed in a steam explosion reactor, using CaO as the alkalinizing agent and aiming at a short-time process. Three different temperatures and residence times were tested: 130, 140, and 150°C; 5, 10, and 15 min. When performed at 140°C for 10 min, the steam explosion in alkaline medium resulted in the optimum combination of protein extraction yield (30%) and gelatine quality (viscosity of 2.4 cP at 25°C in a 24.6 g/L protein solution – 39 kDa of molecular mass M¯w). Not only a high extraction yield was achieved, but when compared to traditional methods, steam explosion in alkaline medium reduced the process time by a factor that varied from 12 to 36 times. It also reduced chromium content in the gelatine by a factor that varied from 16 to 96 times. Finally, to produce a high quality product, the ash content of the gelatine was reduced from 11.8% (dry basis) to 1.2% (dry basis) through diafiltration. This purification allows the application of the gelatine, for example, in the production of polymeric films.

Steam explosion

Alkaline hydrolysis

Diafiltration

10.1080/09593330.2018.1551430

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Mechanical and Water Interaction Properties of Polymeric Films Produced with Starch and Gelatin Extracted from Leather Waste as Affected by Different Composition

Journal of the American Leather Chemists Association (2019)

Bianca Santinon Scopel Laís Bavaresco Júlia Mascarello Aline Dettmer Camila Baldasso

In this work, gelatin extracted from chromed leather wastes (CLW) was used to produce polymeric films with starch. Different compositions (glycerol or sorbitol as plasticizers, 0, 10 and 20% of plasticizer and 6.4, 8.0 and 9.6 g of starch for each 2.4 g of gelatin) were evaluated. Water solubility ranged from 17 to28% and elongation at break from 6.5 to 133.8%. The oppositeeffect was noticed for tensile strength. Small amounts ofchromium (2.4 – 2.9 mg/kg of film) would allow the filmsapplication in agriculture, where nitrogen released after filmsdegradation would act as a nutrient.

Plasticizer

Gelatin

Elongation

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Enhancement of biogas and methane production by anaerobic digestion of swine manure with addition of microorganisms isolated from sewage sludge

Process Safety and Environmental Protection (2016)

Jayna Pessuto Bianca Santinon Scopel Daniele Perondi Marcelo Godinho Aline Dettmer

Biogas

Sewage sludge

Cow dung

10.1016/j.psep.2016.08.020

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Citronella essential oil microencapsulation by complex coacervation with leather waste gelatin and sodium alginate

Journal of environmental chemical engineering (2018)

Eric F. de Matos Bianca Santinon Scopel Aline Dettmer

Gelatin

Coacervate

Sodium alginate

10.1016/j.jece.2018.03.002

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Citations (55)

Starch-Leather Waste Gelatin Films Cross-Linked with Glutaraldehyde

Journal of Polymers and the Environment (2020)

Bianca Santinon Scopel Gian Lucas Pretto Júlia Isadora Postiglione Corrêa Camila Baldasso Aline Dettmer

Gelatin

Glutaraldehyde

Cross-link

Elongation

10.1007/s10924-020-01736-5

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Citations (36)

ANÁLISE CROMATOGRÁFICA DOS GASES PRODUZIDOS NA CO-PIRÓLISE DE PNEUS EM LEITO FLUIDIZADO COM SUPORTE DE AREIA DE FUNDIÇÃO

Bianca Santinon Scopel Daniele Perondi Gabriela Carvalho Collazzo Aline Dettmer Marcelo Godinho

A co-pirólise é uma vantajosa alternativa para a disposição de resíduos industriais visto que permite o aproveitamento dos produtos gerados. A utilização do gás pirolítico como fonte de energia depende diretamente de sua caracterização, uma vez que a composição determina o seu potencial como combustível. O objetivo deste trabalho consistiu no desenvolvimento e avaliação de metodologia para a análise qualitativa e quantitativa do gás proveniente da co-pirólise de pneus em leito fluidizado com suporte de areia de fundição. Os ensaios foram realizados a 500°C e amostras do gás foram analisadas por cromatografia gasosa (CG). Foram empregadas duas configurações de análise com uma coluna Porapak Q e dois detectores: condutividade térmica e ionização de chama. A análise qualitativa do gás pirolítico indicou a presença de H2, CO, CO2, O2, CH4, C2H6, C2H4 e hidrocarbonetos com cadeias de 3 carbonos. Foram determinadas altas concentrações, em base molar, de H2 e CH4, 47,69 % e 33,09 %, respectivamente, e poder calorífico do gás igual a 53 MJ/kg, indicando que este pode ser utilizado como combustível.

10.5151/chemeng-cobeq2014-1968-16628-136445

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Steam explosion as pretreatment to increase gelatin extraction yield from chromium tanned leather wastes

Environmental Progress & Sustainable Energy (2018)

Bianca Santinon Scopel Danielle Restelatto Camila Baldasso Aline Dettmer Ruth Marlene Campomanes Santana

Alkaline hydrolysis of chromium tanned leather wastes (CTLW) is a promising process that allows turning this waste into valuable materials, especially into protein, recovered as gelatin. Steam explosion, which is a fast, chemical‐free, and efficient process, was tested in this work as a pretreatment to open up the fibrous structure of CTLW and ease gelatin extraction through subsequent alkaline hydrolysis, increasing the process yield. Two steam explosion temperatures (130 °C and 150 °C) and residence times (5 and 15 min) were tested. The gelatin extracted in aqueous medium was characterized according to its dry mass content, ash content, viscosity, protein content, chromium content, and helix‐to‐coil transition temperature. CTLW steam exploded in more aggressive conditions (150 °C, 15 min) allowed the extraction of three times more protein when compared to CTLW without any pretreatment. However, samples treated at 150 °C produced lower‐quality (partially degraded) gelatin. Steam explosion performed at 130 °C for 15 min almost doubled protein extraction and resulted in a better quality gelatin. This is a promising process for the proper use of CTLW as raw material for the production of high added‐value products. © 2018 American Institute of Chemical Engineers Environ Prog, 38: 367–373, 2019

Gelatin

Steam explosion

10.1002/ep.12956

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Citations (16)