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21 Results Found

  • Review
  • Open Access
1 Citations
1,090 Views
7 Pages

Identification and Isolation of an Azoreductase from Enterococcus faecium

  • Susan R. Macwana,
  • Sumit Punj,
  • John Cooper,
  • Evan Schwenk and
  • Gilbert H. John

Azo dyes are commonly used in many commercial industries. Some of the azo dyes can produce carcinogenic compounds after being metabolized by azoreductase. Several human intestinal microbiota possess azoreductase activity which plays an important role...

  • Review
  • Open Access
2 Citations
1,306 Views
8 Pages

Azoreductases reduce the azo bond (N=N) in azo dyes to produce colorless amine products. Crude cell extracts from Enterococcus faecalis have been shown to utilize both NADH and NADPH as electron donors for azo dye reduction. An azoreductase was purif...

  • Article
  • Open Access
47 Citations
6,444 Views
26 Pages

Biodegradation, Decolorization, and Detoxification of Di-Azo Dye Direct Red 81 by Halotolerant, Alkali-Thermo-Tolerant Bacterial Mixed Cultures

  • Islam M. Kamal,
  • Nourtan F. Abdeltawab,
  • Yasser M. Ragab,
  • Mohamed A. Farag and
  • Mohammed A. Ramadan

Azo dyes impact the environment and deserve attention due to their widespread use in textile and tanning industries and challenging degradation. The high temperature, pH, and salinity used in these industries render industrial effluent decolorization...

  • Article
  • Open Access
17 Citations
3,791 Views
15 Pages

High Throughput Sediment DNA Sequencing Reveals Azo Dye Degrading Bacteria Inhabit Nearshore Sediments

  • Mei Zhuang,
  • Edmond Sanganyado,
  • Liang Xu,
  • Jianming Zhu,
  • Ping Li and
  • Wenhua Liu

Estuaries and coastal environments are often regarded as a critical resource for the bioremediation of organic pollutants such as azo dyes due to their high abundance and diversity of extremophiles. Bioremediation through the activities of azoreducta...

  • Article
  • Open Access
2,242 Views
14 Pages

An Innovative Inhibitor with a New Chemical Moiety Aimed at Biliverdin IXβ Reductase for Thrombocytopenia and Resilient against Cellular Degradation

  • Hoe-Myung Jung,
  • Jung-Hye Ha,
  • Mark Vincent C. dela Cerna,
  • Joseph A. Burlison,
  • Joonhyeok Choi,
  • Bo-Ram Kim,
  • Jeong Kyu Bang,
  • Kyoung-Seok Ryu and
  • Donghan Lee

Biliverdin IXβ reductase (BLVRB) has emerged as a promising therapeutic target for thrombocytopenia due to its involvement in reactive oxygen species (ROS) mechanisms. During the pursuit of inhibitors targeting BLVRB, olsalazine (OSA) became app...

  • Review
  • Open Access
34 Citations
5,448 Views
26 Pages

29 May 2022

Hypoxia is one of the hallmarks of the tumor microenvironment and can be used in the design of targeted therapies. Cellular adaptation to hypoxic stress is regulated by hypoxia-inducible factor 1 (HIF-1). Hypoxia is responsible for the modification o...

  • Article
  • Open Access
3 Citations
2 Views
5 Pages

Reduction of Azo Dyes by Flavin Reductase from Citrobacter freundii A1

  • Mohd Firdaus Abdul-Wahab,
  • Giek Far Chan,
  • Abdull Rahim Mohd Yusoff and
  • Noor Aini Abdul Rashid

18 December 2012

Citrobacter freundii A1 isolated from a sewage treatment facility was demonstrated to be able to effectively decolorize azo dyes as pure and mixed culture. This study reports on the investigation on the enzymatic systems involved. An assay performed...

  • Article
  • Open Access
2 Citations
1,761 Views
17 Pages

6 September 2024

Human intestinal bacteria are the primary producers of azo reductase, and the content of azo reductase is closely associated with various intestinal diseases, including ulcerative colitis (UC). The rapid detection of changes in azo reductase levels i...

  • Article
  • Open Access
2,361 Views
19 Pages

Molecular Periphery Design Allows Control of the New Nitrofurans Antimicrobial Selectivity

  • Lyubov Vinogradova,
  • Alexey Lukin,
  • Kristina Komarova,
  • Maxim Zhuravlev,
  • Artem Fadeev,
  • Mikhail Chudinov,
  • Elizaveta Rogacheva,
  • Lyudmila Kraeva,
  • Maxim Gureev and
  • Tatiana Vinogradova
  • + 2 authors

17 July 2024

A series of 13 new 3-substituted 5-(5-nitro-2-furyl)-1,2,4-oxadiazoles was synthesized from different aminonitriles. All compounds were screened in the disc diffusion test at a 100 μg/mL concentration to determine the bacterial growth inhibition z...

  • Article
  • Open Access
2 Citations
2,038 Views
19 Pages

You Win Some, You Lose Some: Modifying the Molecular Periphery of Nitrofuran-Tagged Diazaspirooctane Reshapes Its Antibacterial Activity Profile

  • Lyubov Vinogradova,
  • Kristina Komarova,
  • Alexey Lukin,
  • Maxim Zhuravlev,
  • Dmitry Deniskin,
  • Anastasia Poliakova,
  • Mikhail Chudinov,
  • Maxim Gureev,
  • Marine Dogonadze and
  • Viktor Korzhikov-Vlakh
  • + 4 authors

29 December 2024

The use of the concept of privileged structures significantly accelerates the search for new leads and their optimization. 6-(methylsulfonyl)-8-(4-methyl-4H-1,2,4-triazol-3-yl)-2-(5-nitro-2-furoyl)-2,6-diazaspiro[3.4]octane 1 has been identified as a...

  • Article
  • Open Access
13 Citations
3,611 Views
13 Pages

Azocalix[4]arene-Rhodamine Supramolecular Hypoxia-Sensitive Systems: A Search for the Best Calixarene Hosts and Rhodamine Guests

  • Diana Mironova,
  • Vladimir Burilov,
  • Farida Galieva,
  • Mohamed Ali Mohamed Khalifa,
  • Sofia Kleshnina,
  • Alsu Gazalieva,
  • Ramil Nugmanov,
  • Svetlana Solovieva and
  • Igor Antipin

7 September 2021

A potential hypoxia-sensitive system host-guest complex of three calixarenes (including two with four anionic carboxyl and sulphonate azo fragments on the upper rim and a newly synthesized bis-azo adduct of calixarene in the cone configuration with a...

  • Article
  • Open Access
55 Citations
6,444 Views
12 Pages

The Impact of Cholecystectomy on the Gut Microbiota: A Case-Control Study

  • Won Jae Yoon,
  • Han-Na Kim,
  • Eunkyo Park,
  • Seungho Ryu,
  • Yoosoo Chang,
  • Hocheol Shin,
  • Hyung-Lae Kim and
  • Sun Young Yi

11 January 2019

Cholecystectomy alters the bile flow into the intestine and the enterohepatic circulation of the bile acids; this may affect the gut microbiota. We assessed the gut microbiota composition of patients who had undergone cholecystectomy and compared wit...

  • Feature Paper
  • Article
  • Open Access
12 Citations
6,114 Views
14 Pages

Biotransformation and Detoxification of Xylidine Orange Dye Using Immobilized Cells of Marine-Derived Lysinibacillus sphaericus D3

  • Prabha Devi,
  • Solimabi Wahidullah,
  • Farhan Sheikh,
  • Rochelle Pereira,
  • Niteen Narkhede,
  • Divya Amonkar,
  • Supriya Tilvi and
  • Ram Murthy Meena

8 February 2017

Lysinibacillus sphaericus D3 cell-immobilized beads in natural gel sodium alginate decolorized the xylidine orange dye 1-(dimethylphenylazo)-2-naphthol-6-sulfonic acid sodium salt in the laboratory. Optimal conditions were selected for decolorization...

  • Article
  • Open Access
121 Views
20 Pages

16 January 2026

Industrial synthetic dyes are among the most common and hazardous pollutants in manufacturing wastewater. In this study, effective dye-decolorizing fungi were isolated from industrial discharge and evaluated for their decolorization efficiency for va...

  • Article
  • Open Access
44 Citations
11,203 Views
26 Pages

Environmental release of benzidine-based dyes is a matter of health concern. Here, a microbial consortium was enriched from textile dye contaminated soils and investigated for biodegradation of the carcinogenic benzidine-based dye Trypan Blue using w...

  • Review
  • Open Access
6 Citations
4,170 Views
37 Pages

Systematic Evaluation of Biodegradation of Azo Dyes by Microorganisms: Efficient Species, Physicochemical Factors, and Enzymatic Systems

  • Domingo Cesar Carrascal-Hernández,
  • Erney José Orozco-Beltrán,
  • Daniel Insuasty,
  • Edgar Márquez and
  • Carlos David Grande-Tovar

18 August 2025

Modern culture, strongly influenced by the growth of sectors such as the fashion and textile industries, has generated an environmental trend that is difficult to reverse. It is estimated that between 60 and 70% of the dyes used in these sectors are...

  • Feature Paper
  • Review
  • Open Access
42 Citations
8,799 Views
29 Pages

Advancing Dye Degradation: Integrating Microbial Metabolism, Photocatalysis, and Nanotechnology for Eco-Friendly Solutions

  • Anjuman Ayub,
  • Atif Khurshid Wani,
  • Chirag Chopra,
  • Devinder Kumar Sharma,
  • Owais Amin,
  • Ab Waheed Wani,
  • Anjuvan Singh,
  • Subaya Manzoor and
  • Reena Singh

Textile dyes pose a major environmental threat due to their toxicity, persistence in water bodies, and resistance to conventional wastewater treatment. To address this, researchers have explored biological and physicochemical degradation methods, foc...

  • Article
  • Open Access
274 Views
17 Pages

Part II: The Influence of Crosslinking Agents on the Properties and Colon-Targeted Drug Delivery Efficacy of Dextran-Based Hydrogels

  • Tamara Erceg,
  • Miloš Radosavljević,
  • Milorad Miljić,
  • Aleksandra Cvetanović Kljakić,
  • Sebastian Baloš,
  • Katarina Mišković Špoljarić,
  • Ivan Ćorić,
  • Ljubica Glavaš-Obrovac and
  • Aleksandra Torbica

28 December 2025

In this study, dextran-based hydrogels were synthesized in dimethyl sulfoxide via free-radical polymerization with three structurally different crosslinking agents: divinyl benzene (DVB), diethylene glycol diacrylate (DEGDA), and 4,4′-di(methac...

  • Article
  • Open Access
40 Citations
4,812 Views
27 Pages

5 January 2022

Methyl orange (MO) is categorized among the recalcitrant and refractory xenobiotics, representing a significant burden in the ecosystem. To clean-up the surrounding environment, advances in microbial degradation have been made. The main objective of...

  • Feature Paper
  • Article
  • Open Access
77 Citations
7,775 Views
16 Pages

Biological Mineralization of Methyl Orange by Pseudomonas aeruginosa

  • Asad Ullah Khan,
  • Muhammad Zahoor,
  • Mujaddad Ur Rehman,
  • Abdul Bari Shah,
  • Ivar Zekker,
  • Farhat Ali Khan,
  • Riaz Ullah,
  • Ghadeer M. Albadrani,
  • Roula Bayram and
  • Hanan R. H. Mohamed

12 May 2022

Due to its recalcitrant and carcinogenic nature, the presence of methyl orange (MO) in the environment is a serious threat to human and animal life and is also toxic to plants. MO being recalcitrant cannot be effectively reclaimed from industrial eff...

  • Feature Paper
  • Article
  • Open Access
108 Citations
10,030 Views
23 Pages

Biological Degradation of the Azo Dye Basic Orange 2 by Escherichia coli: A Sustainable and Ecofriendly Approach for the Treatment of Textile Wastewater

  • Muhammad Ikram,
  • Mohammad Naeem,
  • Muhammad Zahoor,
  • Marlia Mohd Hanafiah,
  • Adeleke Abdulrahman Oyekanmi,
  • Riaz Ullah,
  • Dunia A. Al Farraj,
  • Mohamed S. Elshikh,
  • Ivar Zekker and
  • Naila Gulfam

28 June 2022

In this study, initially 11 different bacterial strains were tested for the degradation capabilities against Basic Orange 2 dye. In initial screening with 78.90% degradation activity, Escherichia coli emerged as the most promising strain to degrade t...