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One of the agro-industry’s side streams that is widely met is the-keratin rich fibrous material that is becoming a waste product without valorization. Its management as a waste is costly, as the incineration of this type of waste constitutes high environmental concern. Considering these facts, the keratin-rich waste can be considered as a treasure for the producers interested in the valorization of such slowly-biodegradable by-products. As keratin is a protein that needs harsh conditions for its degradation, and that in most of the cases its constitutive amino acids are destroyed, we review new extraction methods that are eco-friendly and cost-effective. The chemical and enzymatic extractions of keratin are compared and the optimization of the extraction conditions at the lab scale is considered. In this study, there are also considered the potential applications of the extracted keratin as well as the reuse of the by-products obtained during the extraction processes.
Simona Perța-Crișan; Claudiu Ursachi; Simona Gavrilaș; Florin Oancea; Florentina-Daniela Munteanu. Closing the Loop with Keratin-Rich Fibrous Materials. Polymers 2021, 13, 1896 .
AMA StyleSimona Perța-Crișan, Claudiu Ursachi, Simona Gavrilaș, Florin Oancea, Florentina-Daniela Munteanu. Closing the Loop with Keratin-Rich Fibrous Materials. Polymers. 2021; 13 (11):1896.
Chicago/Turabian StyleSimona Perța-Crișan; Claudiu Ursachi; Simona Gavrilaș; Florin Oancea; Florentina-Daniela Munteanu. 2021. "Closing the Loop with Keratin-Rich Fibrous Materials." Polymers 13, no. 11: 1896.
Benzene, toluene, and total BTEX (benzene, toluene, ethylbenzene, and xylene) concentrations registered for one year (2016) have been determined every month for one high-density traffic area. The assessment was performed in Arad City, Romania, to evaluate these pollutants and their influence on the inhabitants’ health. The contaminants were sampled using a static sampling method and analyzed by gas chromatography coupled with mass spectrometry. Benzene was the most dominant among the BTEX compounds—the average concentrations ranged from 18.00 ± 1.32 µg m−3 in December to 2.47 ± 0.74 µg m−3 in August. The average toluene concentration over the year was 4.36 ± 2.42 µg m−3 (with a maximum of 9.60 ± 2.39 µg m−3 in November and a minimum of 1.04 ± 0.29 µg m−3 in May). The toluene/benzene ratio (T/B) was around 0.5, indicating substantial contributions from mobile sources (vehicles). The emission and accumulation of different aromatic compounds (especially benzene) could deteriorate the urban air quality. The lifetime cancer risk (LTCR) for benzene was found to be more than 10−5 in winter, including the inhabitants in the “probable cancer risk” category.
Corina Popitanu; Gabriela Cioca; Lucian Copolovici; Dennis Iosif; Florentina-Daniela Munteanu; Dana Copolovici. The Seasonality Impact of the BTEX Pollution on the Atmosphere of Arad City, Romania. International Journal of Environmental Research and Public Health 2021, 18, 4858 .
AMA StyleCorina Popitanu, Gabriela Cioca, Lucian Copolovici, Dennis Iosif, Florentina-Daniela Munteanu, Dana Copolovici. The Seasonality Impact of the BTEX Pollution on the Atmosphere of Arad City, Romania. International Journal of Environmental Research and Public Health. 2021; 18 (9):4858.
Chicago/Turabian StyleCorina Popitanu; Gabriela Cioca; Lucian Copolovici; Dennis Iosif; Florentina-Daniela Munteanu; Dana Copolovici. 2021. "The Seasonality Impact of the BTEX Pollution on the Atmosphere of Arad City, Romania." International Journal of Environmental Research and Public Health 18, no. 9: 4858.
The working conditions in a slaughterhouse are difficult because of the low temperatures, high humidity, and little natural light. Therefore, in these facilities, there is a high demand in the maintenance of strict hygiene rules. Lately, the new SARS-CoV-2 pandemic situation has brought new challenges in the meat industry, as this sector has to maintain its operability to supply the meat and meat products demanded by the consumers. In this challenging period, the safety of the workers is as important as keeping the high demands for the safety of the meat and meat products along with consumer confidence. This paper aims to give an overview of the risks associated with the SARS-CoV-2 virus transmission between the workers in slaughterhouses and to evaluate the stability and infectivity in the working environment of these facilities. Considering the persistence of this virus on different surfaces and the environmental conditions affecting its stability (temperature, relative humidity, and natural light), in the study we proposed several short-, medium-, and long-term preventive measures for minimizing the potential threats of the actual pandemic.
Claudiu Ursachi; Florentina-Daniela Munteanu; Gabriela Cioca. The Safety of Slaughterhouse Workers during the Pandemic Crisis. International Journal of Environmental Research and Public Health 2021, 18, 2633 .
AMA StyleClaudiu Ursachi, Florentina-Daniela Munteanu, Gabriela Cioca. The Safety of Slaughterhouse Workers during the Pandemic Crisis. International Journal of Environmental Research and Public Health. 2021; 18 (5):2633.
Chicago/Turabian StyleClaudiu Ursachi; Florentina-Daniela Munteanu; Gabriela Cioca. 2021. "The Safety of Slaughterhouse Workers during the Pandemic Crisis." International Journal of Environmental Research and Public Health 18, no. 5: 2633.
The efficacy and security of food supplements are largely used terms nowadays, giving rise to controversies regarding the safety or risks that may occur in consuming such products. In the international literature, there are studies regarding the consumption of dietary supplements from a medical or sociological point of view. The present study focused on the analysis of the Romanian population’s opinion regarding the safety of dietary supplements (from the consumer protection point of view), also identifying the profile of the Romanian consumers in terms of consuming supplements, the perception of the consumer concerning the safety of these products and the main factors which determine the behaviour of supplements consumers. The background of the study includes a literature review and some controversies regarding how efficient it is to consume food supplements. The classification tree was used as a pertinent, rigorous, structured and easily readable method. A survey was performed among 333 Romanian respondents who belong to different social classes. The present study draws conclusions related to the importance of mass media, friends’ advice and the effects of using dietary supplements in drawing up a clear opinion of the Romanian consumers’ perception regarding the safety of using supplements.
Valentin Burcă; Luiela Magdalena Csorba; Florentina-Daniela Munteanu; Sergiu Rusu. The Romanian consumers’ perception regarding the safety of dietary supplements. Journal of Public Health 2021, 1 -20.
AMA StyleValentin Burcă, Luiela Magdalena Csorba, Florentina-Daniela Munteanu, Sergiu Rusu. The Romanian consumers’ perception regarding the safety of dietary supplements. Journal of Public Health. 2021; ():1-20.
Chicago/Turabian StyleValentin Burcă; Luiela Magdalena Csorba; Florentina-Daniela Munteanu; Sergiu Rusu. 2021. "The Romanian consumers’ perception regarding the safety of dietary supplements." Journal of Public Health , no. : 1-20.
Meat products represent an important component of the human diet, their consumption registering a global increase over the last few years. These foodstuffs constitute a good source of energy and some nutrients, such as essential amino acids, high biological value proteins, minerals like iron, zinc, selenium, manganese and B-complex vitamins, especially vitamin B12. On the other hand, nutritionists have associated high consumption of processed meat with an increased risk of several diseases. Researchers and processed meat producers are involved in finding methods to eliminate nutritional deficiencies and potentially toxic compounds, to obtain healthier products and at the same time with no affecting the sensorial quality and safety of the meat products. The present review aims to summarize the newest trends regarding the most important methods that can be applied to obtain high-quality products. Nutritional enrichment with natural bioactive plant compounds (antioxidants, dietary fibers) or probiotics, reduction of harmful components (salt, nitrate/nitrite, N-nitrosamines) and the use of alternative technologies (high-pressure processing, cold plasma, ultrasounds) are the most used current strategies to accomplish this aim.
Claudiu Ștefan Ursachi; Simona Perța-Crișan; Florentina-Daniela Munteanu. Strategies to Improve Meat Products’ Quality. Foods 2020, 9, 1883 .
AMA StyleClaudiu Ștefan Ursachi, Simona Perța-Crișan, Florentina-Daniela Munteanu. Strategies to Improve Meat Products’ Quality. Foods. 2020; 9 (12):1883.
Chicago/Turabian StyleClaudiu Ștefan Ursachi; Simona Perța-Crișan; Florentina-Daniela Munteanu. 2020. "Strategies to Improve Meat Products’ Quality." Foods 9, no. 12: 1883.
This paper presents an enzyme biocatalytic method for grafting lignin (grafting bioprocess) with aniline, leading to an amino-derivatized polymeric product with modified properties (e.g., conductivity, acidity/basicity, thermostability and amino-functionalization). Peroxidase enzyme was used as a biocatalyst and H2O2 was used as an oxidation reagent, while the oxidative insertion of aniline into the lignin structure followed a radical mechanism specific for the peroxidase enzyme. The grafting bioprocess was tested in different configurations by varying the source of peroxidase, enzyme concentration and type of lignin. Its performance was evaluated in terms of aniline conversion calculated based on UV-vis analysis. The insertion of amine groups was checked by 1H-NMR technique, where NH protons were detected in the range of 5.01–4.99 ppm. The FTIR spectra, collected before and after the grafting bioprocess, gave evidence for the lignin modification. Finally, the abundance of grafted amine groups was correlated with the decrease of the free –OH groups (from 0.030 to 0.009 –OH groups/L for initial and grafted lignin, respectively). Additionally, the grafted lignin was characterized using conductivity measurements, gel permeation chromatography (GPC), thermogravimetric analysis (TGA), temperature-programmed desorption (TPD-NH3/CO2) and scanning electron microscopy (SEM) analyses. The investigated properties of the developed lignopolymer demonstrated its disposability for specific industrial applications of derivatized lignin.
Sabina Gabriela Ion; Teodor Brudiu; Anamaria Hanganu; Florentina Munteanu; Madalin Enache; Gabriel-Mihai Maria; Madalina Tudorache; Vasile Parvulescu. Biocatalytic Strategy for Grafting Natural Lignin with Aniline. Molecules 2020, 25, 4921 .
AMA StyleSabina Gabriela Ion, Teodor Brudiu, Anamaria Hanganu, Florentina Munteanu, Madalin Enache, Gabriel-Mihai Maria, Madalina Tudorache, Vasile Parvulescu. Biocatalytic Strategy for Grafting Natural Lignin with Aniline. Molecules. 2020; 25 (21):4921.
Chicago/Turabian StyleSabina Gabriela Ion; Teodor Brudiu; Anamaria Hanganu; Florentina Munteanu; Madalin Enache; Gabriel-Mihai Maria; Madalina Tudorache; Vasile Parvulescu. 2020. "Biocatalytic Strategy for Grafting Natural Lignin with Aniline." Molecules 25, no. 21: 4921.
Alpha-cypermethrin is a synthetic pyrethroid that was extensively used for insect control, since the early 1980s. However, it is known that its presence in the environment has toxic effects on humans and aquatic life forms. For this reason, it is commendable for it to be removed completely from the contaminated environment. In this study, we evaluated the adsorption capacity of a marine alga for the removal of cypermethrin from water. The adsorption experiments were performed based on the batch equilibrium technique. The samples containing the pesticide were analyzed using gas chromatography with an electron capture detector, after liquid-liquid extraction in hexane. The results obtained from the kinetic adsorption studies showed that the equilibrium time was attained after 40 min. The adsorption parameters at equilibrium concentrations, obtained through the Langmuir, Freundlich, and Temkin models, showed that the used brown marine alga has a maximum amount of adsorbed cypermethrin of 588.24 µg/g. The correlation coefficients obtained for each model prove that the Langmuir model best fits the experimental data.
Violeta Năstuneac; Mirela Panainte-Lehăduș; Emilian Florin Moșneguțu; Simona Gavrilaș; Gabriela Cioca; Florentina-Daniela Munteanu. Removal of Cypermethrin from Water by Using Fucus Spiralis Marine Alga. International Journal of Environmental Research and Public Health 2019, 16, 3663 .
AMA StyleVioleta Năstuneac, Mirela Panainte-Lehăduș, Emilian Florin Moșneguțu, Simona Gavrilaș, Gabriela Cioca, Florentina-Daniela Munteanu. Removal of Cypermethrin from Water by Using Fucus Spiralis Marine Alga. International Journal of Environmental Research and Public Health. 2019; 16 (19):3663.
Chicago/Turabian StyleVioleta Năstuneac; Mirela Panainte-Lehăduș; Emilian Florin Moșneguțu; Simona Gavrilaș; Gabriela Cioca; Florentina-Daniela Munteanu. 2019. "Removal of Cypermethrin from Water by Using Fucus Spiralis Marine Alga." International Journal of Environmental Research and Public Health 16, no. 19: 3663.
The impact of the antibiotics in the environment is not well understood yet. Moreover, the total amount of antibiotics that are ending up in the environment as solid waste is not known and cannot be rigorously determined as many variables are influencing the determination of their concentration. The present article is focused on the estimation of the amount of non-prescribed antibiotics that are used in different European countries. Particular attention is paid to the class of beta-lactams, as they are responsible for a considerate share of the antimicrobial resistance. The primary purpose was the estimation of the quantity of non-prescribed antibiotics that might reach the environment as solid waste. For the present study, we used the ECDC and EUROSTAT reported data.
Gabriela Cioca; Florentina-Daniela Munteanu. Estimation of the Amount of Disposed Antibiotics. Sustainability 2019, 11, 1800 .
AMA StyleGabriela Cioca, Florentina-Daniela Munteanu. Estimation of the Amount of Disposed Antibiotics. Sustainability. 2019; 11 (6):1800.
Chicago/Turabian StyleGabriela Cioca; Florentina-Daniela Munteanu. 2019. "Estimation of the Amount of Disposed Antibiotics." Sustainability 11, no. 6: 1800.
Tau is a microtubule-associated protein that promotes microtubule assembly and stability. This protein is implicated in several neurodegenerative diseases, including Alzheimer’s. To date, the three-dimensional (3D) structure of tau has not been fully solved, experimentally. Even the most recent information is sometimes controversial in regard to how this protein folds, interacts, and behaves. Predicting the tau structure and its profile sheds light on the knowledge about its properties and biological function, such as the binding to microtubules (MT) and, for instance, the effect on ionic conductivity. Our findings on the tau structure suggest a disordered protein, with discrete portions of well-defined secondary structure, mostly at the microtubule binding region. In addition, the first molecular dynamics simulation of full-length tau along with an MT section was performed, unveiling tau structure when associated with MT and interaction sites. Electrostatics and conductivity were also examined to understand how tau affects the ions in the intracellular fluid environment. Our results bring a new insight into tau and tubulin MT proteins, their characteristics, and the structure–function relationship.
Tarsila Castro; Florentina-Daniela Munteanu; Artur Cavaco-Paulo. Electrostatics of Tau Protein by Molecular Dynamics. Biomolecules 2019, 9, 116 .
AMA StyleTarsila Castro, Florentina-Daniela Munteanu, Artur Cavaco-Paulo. Electrostatics of Tau Protein by Molecular Dynamics. Biomolecules. 2019; 9 (3):116.
Chicago/Turabian StyleTarsila Castro; Florentina-Daniela Munteanu; Artur Cavaco-Paulo. 2019. "Electrostatics of Tau Protein by Molecular Dynamics." Biomolecules 9, no. 3: 116.
The intensive use of toxic and remanent pesticides in agriculture has prompted research into novel performant, yet cost-effective and fast analytical tools to control the pesticide residue levels in the environment and food. In this context, biosensors based on enzyme inhibition have been proposed as adequate analytical devices with the added advantage of using the toxicity of pesticides for detection purposes, being more “biologically relevant” than standard chromatographic methods. This review proposes an overview of recent advances in the development of biosensors exploiting the inhibition of cholinesterases, photosynthetic system II, alkaline phosphatase, cytochrome P450A1, peroxidase, tyrosinase, laccase, urease, and aldehyde dehydrogenase. While various strategies have been employed to detect pesticides from different classes (organophosphates, carbamates, dithiocarbamates, triazines, phenylureas, diazines, or phenols), the number of practical applications and the variety of environmental and food samples tested remains limited. Recent advances focus on enhancing the sensitivity and selectivity by using nanomaterials in the sensor assembly and novel mutant enzymes in array-type sensor formats in combination with chemometric methods for data analysis. The progress in the development of solar cells enriched the possibilities for efficient wiring of photosynthetic enzymes on different surfaces, opening new avenues for development of biosensors for photosynthesis-inhibiting herbicides.
Bogdan Bucur; Florentina-Daniela Munteanu; Jean-Louis Marty; Alina Vasilescu. Advances in Enzyme-Based Biosensors for Pesticide Detection. Biosensors 2018, 8, 27 .
AMA StyleBogdan Bucur, Florentina-Daniela Munteanu, Jean-Louis Marty, Alina Vasilescu. Advances in Enzyme-Based Biosensors for Pesticide Detection. Biosensors. 2018; 8 (2):27.
Chicago/Turabian StyleBogdan Bucur; Florentina-Daniela Munteanu; Jean-Louis Marty; Alina Vasilescu. 2018. "Advances in Enzyme-Based Biosensors for Pesticide Detection." Biosensors 8, no. 2: 27.
This review provides a brief overview of the fabrication and properties of screen-printed electrodes and details the different opportunities to apply them for the detection of antibiotics, detection of bacteria and antibiotic susceptibility. Among the alternative approaches to costly chromatographic or ELISA methods for antibiotics detection and to lengthy culture methods for bacteria detection, electrochemical biosensors based on screen-printed electrodes present some distinctive advantages. Chemical and (bio)sensors for the detection of antibiotics and assays coupling detection with screen-printed electrodes with immunomagnetic separation are described. With regards to detection of bacteria, the emphasis is placed on applications targeting viable bacterial cells. While the electrochemical sensors and biosensors face many challenges before replacing standard analysis methods, the potential of screen-printed electrodes is increasingly exploited and more applications are anticipated to advance towards commercial analytical tools.
Florentina-Daniela Munteanu; Ana Maria Titoiu; Jean-Louis Marty; Alina Vasilescu. Detection of Antibiotics and Evaluation of Antibacterial Activity with Screen-Printed Electrodes. Sensors 2018, 18, 901 .
AMA StyleFlorentina-Daniela Munteanu, Ana Maria Titoiu, Jean-Louis Marty, Alina Vasilescu. Detection of Antibiotics and Evaluation of Antibacterial Activity with Screen-Printed Electrodes. Sensors. 2018; 18 (3):901.
Chicago/Turabian StyleFlorentina-Daniela Munteanu; Ana Maria Titoiu; Jean-Louis Marty; Alina Vasilescu. 2018. "Detection of Antibiotics and Evaluation of Antibacterial Activity with Screen-Printed Electrodes." Sensors 18, no. 3: 901.
In living systems, protein disulphide isomerase (PDI, EC 5.3.4.1) regulates the formation of new disulphide bonds in proteins (oxidase activity) and catalyzes the rearrangement of non-native disulphide bonds (isomerase activity), leading proteins towards their native configuration. In this study, PDI was used to attach cysteine-containing compounds (CCCs) onto hair, to enhance compound migration within hair fibre and to trigger protein release. A fluorescent (5(6)-TAMRA)-labelled keratin peptide was incorporated into hair by using PDI. Similarly, PDI promoted the grafting of a cysteine-functionalized dye onto wool, as suggested by matrix-assisted laser desorption and ionization time-of-flight results. These reactions were thought to involve oxidation of disulphide bonds between CCCs and wool or hair cysteine residues, catalyzed by the oxidized PDI active site. On the other hand, PDI was demonstrated to enhance the migration of a disulphide bond-functionalized dye within the keratin matrix and trigger the release of RNase A from wool fibres’ surface. These observations may indicate that an isomerisation reaction occurred, catalyzed by the reduced PDI active site, to achieve the thiol-disulphide exchange, i.e. the rearrangement of disulphide bonds between CCCs and keratin. The present communication aims to highlight promising biotechnological applications of PDI, derived from its almost unique properties within the isomerase family.
Margarida M. Fernandes; Andreia C. Gomes; Andreia Vasconcelos; Florentina-Daniela Munteanu; Tzanko Tzanov; Maria Sameiro T. Gonçalves; Nicole End; Kai-Uwe Schoening; Georg M. Guebitz; Artur Cavaco-Paulo. Protein disulphide isomerase-assisted functionalization of keratin-based matrices. Applied Microbiology and Biotechnology 2011, 90, 1311 -1321.
AMA StyleMargarida M. Fernandes, Andreia C. Gomes, Andreia Vasconcelos, Florentina-Daniela Munteanu, Tzanko Tzanov, Maria Sameiro T. Gonçalves, Nicole End, Kai-Uwe Schoening, Georg M. Guebitz, Artur Cavaco-Paulo. Protein disulphide isomerase-assisted functionalization of keratin-based matrices. Applied Microbiology and Biotechnology. 2011; 90 (4):1311-1321.
Chicago/Turabian StyleMargarida M. Fernandes; Andreia C. Gomes; Andreia Vasconcelos; Florentina-Daniela Munteanu; Tzanko Tzanov; Maria Sameiro T. Gonçalves; Nicole End; Kai-Uwe Schoening; Georg M. Guebitz; Artur Cavaco-Paulo. 2011. "Protein disulphide isomerase-assisted functionalization of keratin-based matrices." Applied Microbiology and Biotechnology 90, no. 4: 1311-1321.
The results obtained using Trametes versicolor laccase modified graphite electrodes for detection of eleven different commercially reactive dyes are presented for the first time herein. The increase in current upon injection of the analyzed substrate was shown to be approximated by Michaelis–Menten type dependence. The calculated kinetic constants were used to evaluate the applicability of the laccase modified graphite electrode for the detection of reactive dyes in textile effluents.
Florentina-Daniela Munteanu; Artur Cavaco-Paulo. Biosensors Based on Laccase for Detection of Commercially Reactive Dyes. Analytical Letters 2010, 43, 1126 -1131.
AMA StyleFlorentina-Daniela Munteanu, Artur Cavaco-Paulo. Biosensors Based on Laccase for Detection of Commercially Reactive Dyes. Analytical Letters. 2010; 43 (7):1126-1131.
Chicago/Turabian StyleFlorentina-Daniela Munteanu; Artur Cavaco-Paulo. 2010. "Biosensors Based on Laccase for Detection of Commercially Reactive Dyes." Analytical Letters 43, no. 7: 1126-1131.
Aryl-alcohol oxidase (AAO) electrochemistry studies, using graphite-modified electrodes, are presented for the first time herein. The increase in current upon injection of the analyzed substrate was shown to be approximated by Michaelis–Menten type dependence. The calculated kinetic constants were used to characterize the native (non-mutated) recombinant AAO expressed in Escherichia coli, as well as the native enzyme and the F501Y and F501A variants expressed in Emericella nidulans. Results from cyclic voltammetry experiments conducted with the enzymes adsorbed on graphite electrodes or with the enzymes in solution (using glassy carbon electrode as working electrode) gave information on the redox potential of these enzymes.
Florentina-Daniela Munteanu; Patricia Ferreira; Francisco J. Ruiz-Duenas; Angel T Martínez; Artur Cavaco-Paulo. Bioelectrochemical investigations of aryl-alcohol oxidase from Pleurotus eryngii. Journal of Electroanalytical Chemistry 2008, 618, 83 -86.
AMA StyleFlorentina-Daniela Munteanu, Patricia Ferreira, Francisco J. Ruiz-Duenas, Angel T Martínez, Artur Cavaco-Paulo. Bioelectrochemical investigations of aryl-alcohol oxidase from Pleurotus eryngii. Journal of Electroanalytical Chemistry. 2008; 618 (1-2):83-86.
Chicago/Turabian StyleFlorentina-Daniela Munteanu; Patricia Ferreira; Francisco J. Ruiz-Duenas; Angel T Martínez; Artur Cavaco-Paulo. 2008. "Bioelectrochemical investigations of aryl-alcohol oxidase from Pleurotus eryngii." Journal of Electroanalytical Chemistry 618, no. 1-2: 83-86.
In this paper are presented the possibilities of using matrix assisted laser desorption ionization time of flight (MALDI-TOF) mass spectrometry in textile industry. MALDI-TOF mass spectrometry it is a convenient, versatile method for characterization and identification of dyes and pigments, and also for characterization of fibers and contaminants of the fabrics.
Florentina-Daniela Munteanu; Nicolae Dinca; Artur Cavaco-Paulo. MALDI-TOF Mass Spectrometry in Textile Industry. Nanomaterials for Security 2008, 193 -203.
AMA StyleFlorentina-Daniela Munteanu, Nicolae Dinca, Artur Cavaco-Paulo. MALDI-TOF Mass Spectrometry in Textile Industry. Nanomaterials for Security. 2008; ():193-203.
Chicago/Turabian StyleFlorentina-Daniela Munteanu; Nicolae Dinca; Artur Cavaco-Paulo. 2008. "MALDI-TOF Mass Spectrometry in Textile Industry." Nanomaterials for Security , no. : 193-203.
The effects of ultrasound on 2,2′-Azinobis(3-ethylbenzothiazoline-6-sulfonate) enzymatic oxidation by laccase (Trametes villosa) has been studied by means of cyclic voltammetry. The reaction was allowed to proceed in the presence of a piece of wool and the coloration depth of the wool fabric was measured by means of K/S. It was observed that cyclic voltammetry is influenced the dyeing process and higher K/S values were obtained when the cyclic voltammetry was combined with the ultrasonic irradiation. Moreover, the K/S value is the sum of the values obtained when the wool staining is done in just the presence of cyclic voltammetry or in just the presence of ultrasound. The results obtained on the indigo carmine decolourization gives information on the importance of controlling the amount of ABTS+ formed during the ultrasonication process.
Florentina-Daniela Munteanu; Carlos Basto; Georg M. Gübitz; Artur Cavaco-Paulo. Staining of wool using the reaction products of ABTS oxidation by Laccase: Synergetic effects of ultrasound and cyclic voltammetry. Ultrasonics Sonochemistry 2007, 14, 363 -367.
AMA StyleFlorentina-Daniela Munteanu, Carlos Basto, Georg M. Gübitz, Artur Cavaco-Paulo. Staining of wool using the reaction products of ABTS oxidation by Laccase: Synergetic effects of ultrasound and cyclic voltammetry. Ultrasonics Sonochemistry. 2007; 14 (3):363-367.
Chicago/Turabian StyleFlorentina-Daniela Munteanu; Carlos Basto; Georg M. Gübitz; Artur Cavaco-Paulo. 2007. "Staining of wool using the reaction products of ABTS oxidation by Laccase: Synergetic effects of ultrasound and cyclic voltammetry." Ultrasonics Sonochemistry 14, no. 3: 363-367.