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Marieli Rosseto Cesar Vinicius Toniciolli Rigueto Karolynne Sousa Gomes Daniela Dal Castell Krein Raquel Aparecida Loss Aline Dettmer Neila Silvia Pereira dos Santos Richards 《Journal of the science of food and agriculture》2024,104(6):3185-3196
In the cheese industry, whey, which is rich in lactose and proteins, is underutilized, causing adverse environmental impacts. The fractionation of its components, typically carried out through filtration membranes, faces operational challenges such as membrane fouling, significant protein loss during the process, and extended operating times. These challenges require attention and specific methods for optimization and to increase efficiency. A promising strategy to enhance industry efficiency and sustainability is the use of enzymatic pre-treatment with the enzyme transglutaminase (TGase). This enzyme plays a crucial role in protein modification, catalyzing covalent cross-links between lysine and glutamine residues, increasing the molecular weight of proteins, facilitating their retention on membranes, and contributing to the improvement of the quality of the final products. The aim of this study is to review the application of the enzyme TGase as a pretreatment in whey protein filtration. The scope involves assessing the enzyme's impact on whey protein properties and its relationship with process performance. It also aims to identify both the optimization of operational parameters and the enhancement of product characteristics. This study demonstrates that the application of TGase leads to improved performance in protein concentration, lactose permeation, and permeate flux rate during the filtration process. It also has the capacity to enhance protein solubility, viscosity, thermal stability, and protein gelation in whey. In this context, it is relevant for enhancing the characteristics of whey, thereby contributing to the production of higher quality final products in the food industry. © 2023 Society of Chemical Industry. 相似文献
43.
In this work, the use of a laboratory twin-screw extruder was evaluated to process ultrahigh molar mass polyethylene and composites with carbon nanotubes (CNTs). Commercial polymer samples with lubricant (1%) and different percentages (0.01%, 0.05%, and 0.1%) of pure, oxidized, and chemically surface treated multi-walled carbon nanotubes (MWCNTs) were evaluated. The results showed that polymer melting and crystallization temperatures were not affected by CNTs, although an increase in the degree of crystallinity in all nanocomposites was observed along with a decrease in crystal size. Therefore, CNTs behaved as nucleating agents. All ultrahigh molar mass polyethylene (UHMWPE)/CNT samples showed increased initial degradation temperature, although this was not very great when introducing acetylated and stearic acid modified CNTs. Both oxidized CNTs and stearic acid CNTs did not markedly improve the composites' mechanical properties. Therefore, the nanocomposites containing pure CNTs and most of those with acetylated CNTs resulted in higher reinforcement for UHMWPE. The addition of the lubricant allowed the polymer matrix to be processed in the extruder, whereas the increase in CNT content in UHMWPE improved the stiffness of the material. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47459 相似文献
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Carrara Gabriel R. Burle Leonardo M. Medeiros Dianne S. V. de Albuquerque Célio Vinicius N. Mattos Diogo M. F. 《电信纪事》2020,75(3-4):163-174
Annals of Telecommunications - Blockchain is a disruptive technology that relies on the distributed nature of the peer-to-peer network while performing an agreement, or consensus, a mechanism to... 相似文献
46.
Costa José Arnaldo S. Costa Vinicius C. Pereira-Filho Edenir R. Paranhos Caio M. 《SILICON》2020,12(8):1895-1903
Silicon - A previously synthesized PABA-MCM-41 mesoporous material was used to remove Cr(VI) in leather samples. The optimization step was performed using univariate method for the following... 相似文献
47.
Chiappim William Fraga Mariana Amorim Furlan Humber Ardiles David César Pessoa Rodrigo Sávio 《Microsystem Technologies》2022,28(7):1561-1580
Microsystem Technologies - The wearable sensors have attracted a growing interest in different markets, including health, fitness, gaming, and entertainment, due to their outstanding... 相似文献
48.
Marcus A. OMara Sean P. Ogilvie Matthew J. Large Aline Amorim Graf Anne C. Sehnal Peter J. Lynch Jonathan P. Salvage Izabela Jurewicz Alice A. K. King Alan B. Dalton 《Advanced functional materials》2020,30(32)
Here, an approach is presented to incorporate graphene nanosheets into a silicone rubber matrix via solid stabilization of oil‐in‐water emulsions. These emulsions can be cured into discrete, graphene‐coated silicone balls or continuous, elastomeric films by controlling the degree of coalescence. The electromechanical properties of the resulting composites as a function of interdiffusion time and graphene loading level are characterized. With conductivities approaching 1 S m?1, elongation to break up to 160%, and a gauge factor of ≈20 in the low‐strain linear regime, small strains such as pulse can be accurately measured. At higher strains, the electromechanical response exhibits a robust exponential dependence, allowing accurate readout for higher strain movements such as chest motion and joint bending. The exponential gauge factor is found to be ≈20, independent of loading level and valid up to 80% strain; this consistent performance is due to the emulsion‐templated microstructure of the composites. The robust behavior may facilitate high‐strain sensing in the nonlinear regime using nanocomposites, where relative resistance change values in excess of 107 enable highly accurate bodily motion monitoring. 相似文献
49.
Nobre F. X. Muniz R. do Nascimento E. R. Amorim R. S. Silva R. S. Almeida A. Moreira J. Agostinho Tavares P. B. Brito W. R. Couceiro P. R. C. Leyet Y. 《Journal of Materials Science: Materials in Electronics》2021,32(8):9776-9794
Journal of Materials Science: Materials in Electronics - In this paper, CaWO4 nanoparticles were prepared by the hydrothermal method using the temperature of 100 (CaWO4-100), 120 (CaWO4-120), 140... 相似文献
50.
Multimedia Tools and Applications - Video summarization techniques have allowed the content analysis of large volumes of digital video sequences of different categories, such as movies,... 相似文献