Properties of Laccase of Bacillus marisflavi Strain BB4 and its Synthetic Dyes Decolorization Analysis

2021 ◽  
Author(s):  
Anu Sharma ◽  
M. Muthupriya ◽  
Radharaman Raj ◽  
Zainah Shameen ◽  
Veena SM ◽  
...  
Keyword(s):  
Synthetic Dyes ◽  
Dyes Decolorization

scholarly journals Biodecolorization of Remazol Brilliant Blue–R dye by Tropical White-Rot Fungi and Their Enzymes in The Presence of Guaiacol

2021 ◽  
Vol 12 (2) ◽  
Author(s):  
Sita Heris Anita ◽  
Fitria Ningsih ◽  
Dede Heri Yuli Yanto
Keyword(s):  
Manganese Peroxidase ◽  
White Rot Fungi ◽  
Static Condition ◽  
White Rot ◽  
Brilliant Blue ◽  
Synthetic Dyes ◽  
Trametes Hirsuta ◽  
Remazol Brilliant Blue R ◽  
Dyes Decolorization

The ability of the tropical white-rot fungi and their enzyme to decolorize synthetic dyes was investigated. Production of lignin-modifying enzymes (LMEs) from the three new isolated fungi, namely Trametes hirsuta D7, Ceriporia sp. BIOM 3, and Cymatoderma dendriticum WM01 were observed for 9 days incubation under static condition. The results showed that the LMEs production enhanced in the present of guaiacol. T. hirsuta D7 produced only laccase (Lac), with the highest activity was 22.6 U/L on the 5th-day of the cultivation. At the same time, Ceriporia sp. BIOM 3 and C. dendriticum WM01 secreted both laccases (Lac) with the activities 0.2 U/L and 1.0 U/L, respectively, and manganese peroxidase (MnP) with the activities 0.1 U/L and 1.0 U/L, respectively. Among the fungi, T. hirsuta D7 efficiently degraded 65% Remazol Brilliant Blue–R (RBBR) dye within 72 h using the only laccase. This study shows that laccase may have a major role in synthetic dyes' decolorization process, followed by MnP and LiP.

Production of the Phanerochaete flavido-alba laccase in Aspergillus niger for synthetic dyes decolorization and biotransformation

2013 ◽  
Vol 30 (1) ◽  
pp. 201-211 ◽  
Author(s):  
Lamiae Benghazi ◽  
Eric Record ◽  
Antonio Suárez ◽  
José A. Gomez-Vidal ◽  
José Martínez ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Synthetic Dyes ◽  
Dyes Decolorization

Synthetic dyes decolorization potential of agroindustrial waste-derived thermo-active laccase from Aspergillus species

2020 ◽  
Vol 29 ◽  
pp. 101800
Author(s):  
Kingsley O. Omeje ◽  
Nonso E. Nnolim ◽  
Benjamin O. Ezema ◽  
Juliet N. Ozioko ◽  
Sabinus O.O. Eze
Keyword(s):  
Aspergillus Species ◽  
Synthetic Dyes ◽  
Agroindustrial Waste ◽  
Dyes Decolorization ◽  
Active Laccase

Couleurs à la mode. Impressionism as an Effect of the Chemical Industry

2015 ◽  
Vol 6 (1) ◽  
pp. 159-184
Author(s):  
Wolf Kittler
Keyword(s):  
Nineteenth Century ◽  
Direct Effect ◽  
Chemical Industry ◽  
Synthetic Dyes ◽  
Modern City ◽  
Fashion Magazines ◽  
Realist Novels

"Die Erfindung von Anilin und anderen synthetischen Farbstoffen in der zweiten Hälfte des neunzehnten Jahrhunderts ist der Beginn einer neuen Epoche. Die von der noch jungen chemischen Industrie produzierten neuen Farben sind nicht nur leuchtender als die meisten der traditionellen Farbstoffe, sondern auch viel billiger. Sie verändern das Aussehen von Frauen auf den Straßen der modernen Stadt. Unter den ersten Medien, die diese Revolution bemerken und dokumentieren, sind Modezeitschriften, realistische Romane und impressionistische Gemälde. Der Beitrag zeigt, dass die strahlenden Farben der neuen Palette der impressionistischen Maler ein direkter Effekt der chemischen Industrie sind. </br></br>The invention of aniline and other synthetic dyes in the second half of the nineteenth century is the beginning of a new epoch. The new colors produced by the fledgling chemical industry are not only brighter than most of the traditional dyestuffs, but also much cheaper. They change the appearance of women on the streets of the modern city. Among the first media to notice and document this revolution are fashion magazines, realist novels, and Impressionist paintings. I argue that the bright colors on the new palette of Impressionist painters are a direct effect of the chemical industry. "

Green Synthesis of ZnO/Dy/NiO Heterostructures for Enhanced Photocatalytic Applications

2020 ◽  
Vol 1 (1) ◽  
pp. 30-36
Author(s):  
Shubha Jayachamarajapura Pranesh ◽  
Diwya Lanka
Keyword(s):  
Visible Light ◽  
Uv Light ◽  
Combustion Method ◽  
Hybrid Nanocomposites ◽  
Synthetic Dyes ◽  
Hybrid Nanostructure ◽  
Wide Range ◽  
Visible Light Active ◽  
Textile Industries ◽  
Photocatalytic Applications

Background: Textile industries discharge harmful synthetic dyes to nearby water sources. These colour effluents should be treated before discharge to reduce the toxicity caused by synthetic colours. Objective: To synthesize visible light active superstructures to reduce water pollution caused by textile industries. Methods: We have successfully synthesized ZnO/Dy/NiO hybrid nanocomposites using waste curd as fuel by a simple combustion method. The obtained material was able to reduce recombination and enhanced the photocatalytic degradation of organic pollutants. The as-synthesized material was characterized by XRD, absorption spectroscopy, FESEM, EDAX, etc. The obtained hybrid nanostructure was used as a photocatalyst for the degradation of methylene blue under sunlight, UV light as well as in dark. Comparative experiments were carried out with a variation of catalytic load, pH, dye concentrations, etc. for a better understanding of the performance of the catalyst at various conditions. Results and Conclusion: The ternary compound shows wide range of absorption by expanding absorption band both in UV and visible regions. ZnO/Dy/NiO hybrid nanocomposites performed well and showed uniqueness in the activity uder visible light.

scholarly journals The Sustainable Production of a Novel Laccase from Wheat Bran by Bordetella sp. JWO16: Toward a Total Environment

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 677
Author(s):  
John Onolame Unuofin
Keyword(s):  
Wheat Bran ◽  
Contaminated Soils ◽  
Residual Activity ◽  
Dye Decolorization ◽  
Fermentation Medium ◽  
Biochemical Properties ◽  
Synthetic Dyes ◽  
High Concentrations ◽  
Capital Intensive ◽  
Agroindustrial Residue

Laccase is increasingly adopted in diverse industrial and environmental applications, due to its readily accessible requirements for efficient catalytic synthesis and biotransformation of chemicals. However, it is perceived that its industrial production might incur some unfavorable overhead, which leads to expensive market products, and the corresponding negative environmental feedback, due to the use of capital-intensive and precarious chemicals. To this end, this study was designed to evaluate the performance indicators of the valorization of wheat bran by a novel Jb1b laccase and its subsequent application in waste minimization and water management, on a laboratory scale. Optimal Jb1b laccase was produced in submerged fermentation medium containing wheat bran, an agroindustrial residue, through response surface methodology (RSM) algorithm, and was applied in dye decolorization and denim bioscouring, respectively. Results showed that the resultant enzyme manifested unique biochemical properties, such as enhanced tolerance at certain physicochemical conditions, with a residual activity of at least ca. 76%. Furthermore, phenomenally high concentrations of synthetic dyes (0.2% w v−1) were decolorized over 56 h, and a 6 h mediator-supported simultaneous denim bleaching and decolorization of wash effluent was observed. The sustainability of the production and application processes were inferred from the reusability of the fermentation sludge as a potential biofertilizer, with subsequent prospects for the biostimulation and bioaugmentation of contaminated soils, whereas the decolorized water could be adopted for other uses, amongst which horticulture and forestry are typical examples. These phenomena therefore authenticate the favorable environmental feedbacks and overhead realized in this present study.

Terephthalaldehyde as better crosslinking agent in crosslinked chitosan hydrogel for selective removal of anionic dyes

2021 ◽  
Author(s):  
Madhvi Garg ◽  
Navneet Bhullar ◽  
Bharat Bajaj ◽  
Dhiraj Sud
Keyword(s):  
Crosslinking Agent ◽  
Selective Removal ◽  
Synthetic Dyes ◽  
Anionic Dyes ◽  
Chitosan Hydrogel ◽  
Ultrasound Radiation ◽  
Radiation Induced ◽  
Crosslinked Chitosan ◽  
Chitosan Hydrogels ◽  
Crosslinking Agents

The present manuscript reports the ultrasound radiation induced synthesis of grafted chitosan hydrogels (CAAT and CAAG) using terephthalaldehyde/glutaraldehyde as crosslinking agents and its application for removal of synthetic dyes from...

scholarly journals Simple HPLC-PDA Analysis to Determine Illegal Synthetic Dyes in Herbal Medicines

2021 ◽  
Vol 11 (14) ◽  
pp. 6641
Author(s):  
Kyung-Yuk Ko ◽  
Eun-Young Choi ◽  
Se-Hee Jeong ◽  
Sohwa Kim ◽  
Choon-Kil Lee ◽  
...  
Keyword(s):  
High Performance ◽  
Hplc Analysis ◽  
Ammonium Acetate ◽  
Herbal Medicines ◽  
Positive Sample ◽  
Array Detector ◽  
Synthetic Dyes ◽  
Sunset Yellow ◽  
Herbal Medication ◽  
Relative Standard

Various synthetic dyes are artificially added to herbal medicines for the purpose of visual attraction. In order to monitor the illegal usage of synthetic dyes in herbal medication, a rapid and straightforward analysis method to determine synthetic dyes is required. The study aimed to develop and validate a high-performance liquid chromatography (HPLC) analysis to determine ten synthetic dyes in Hawthorn fruit, Cornus fruit, and Schisandra fruit. Ten synthetic dyes such as Tartrazine, Sunset yellow, Metanil yellow, Auramine O, Amaranth, Orange II, Acid red 73, Amaranth, New Coccine, Azorubine, and Erythrosine B, were extracted using 50 mM ammonium acetate in 70% MeOH; then separated by gradient elution with a mobile phase consisting of acetonitrile and 50 mM ammonium acetate in distilled water using a photodiode array detector (PDA) at 428 nm or 500 nm. In addition, this study established the LC-MS/MS method to confirm the existence of synthetic dyes in the positive sample solution. The HPLC analysis had good linearity (r2 > 0.999). The recoveries of this method ranged from 74.6~132.1%, and the relative standard deviation (RSD) values were less than 6.9%. Most of the samples fulfilled the acceptance criteria of the AOAC guideline. This study demonstrates that the HPLC analysis can be applied to determine ten synthetic dyes in herbal medication.

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