Role of microorganisms in biodegradation of food additive Azo dyes: A review

Alshehrei, Fatimah

doi:10.5897/ajb2020.17250

Cited by 11 publications

(5 citation statements)

References 22 publications

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“…Moreover, the aromatic structure of azo dyes presents challenges in terms of their degradation, leading to prolonged environmental pollution [20]. Exposure to azo dyes can result in various ailments such as edema, allergies, skin irritation, and respiratory issues [21]. To assess the efficacy of removing contaminants, the adsorption of Congo red (CR) dye was evaluated using synthesized ZnO nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of Hibiscus cannabinus L.: Wastewater Purification and Antibacterial Activity

Yang,

Cao,

Chen

et al. 2023

Separations

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The green preparation of metal oxide nanoparticles is an environmentally friendly method, which could reduce the use of toxic solvents and their impact on the environment. The purpose of this study is to investigate the green synthesis of zinc oxide (ZnO) nanoparticles using extracts of Hibiscus cannabinus leaves and to evaluate their potential applications in environmental remediation. In this work, ZnO nanoparticles were successfully prepared and thoroughly characterized using UV–vis, Fourier transform infrared analysis (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM) analysis, and scanning electron microscope (SEM) with energy dispersive x-ray analysis (EDAX). As a result, the synthesized ZnO nanoparticles showed a good adsorption capacity for Congo red (CR), and satisfactory antioxidant and antibacterial activities. They exhibited good adsorption and removal abilities for CR in aqueous solutions. With the conditions optimized, the adsorption kinetics and isotherms were fitted to the pseudo-second-order model and the Langmuir model. The ZnO nanoparticles could also effectively scavenge 2-2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-di(3-ethylbenzthiazoline sulphonate) (ABTS) radicals, and appeared to inhibit the growth of Escherichia coli and Staphylococcus aureus bacteria. Based on the identified adsorption capacity, the green synthesized ZnO nanoparticles demonstrated their potential to be used in the removal of dyeing wastewater and in the further purification of water due to their antioxidant activity and antibacterial activity.

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Section: Introductionmentioning

confidence: 99%

Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of Hibiscus cannabinus L.: Wastewater Purification and Antibacterial Activity

Yang,

Cao,

Chen

et al. 2023

Separations

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“…In an attempt to clarify the differences among the electrochemical performance of the electrodes, electrochemical impedance spectroscopy (EIS) was employed as a technique for electrochemical characterization of each electrode surface. 32 Figure 5A shows the impedance spectra represented as Nyquist plots (Z im vs Z re ) for bare GCE and ZnO NPs/GC composite film modified GCE in 0.1 mM KCl solution containing 5.0 mM Fe(CN) 6 3−/4− . The semicircle appearing in Nyquist plot indicates the parallel combination of charge transfer resistance and double layer capacitance resulting from electrode impedance.…”

Section: Resultsmentioning

confidence: 99%

“…Azo dyes have toxic effects and can cause oxidative stress response and alter gene expression of transport proteins. [2][3][4][5][6] It has been proven in many researches that consuming too much Allura Red cause adverse effects on human health such as allergies, food intolerance, cancer, multiple sclerosis, attention deficit hyperactivity disorder, brain damage, nausea, cardiac disease and asthma due to the reaction of aromatic azo compounds. 3 Thus considering the importance of food health and quality control of food products, many analytical methods have been used for the determination of Allura Red, such as thin layer chromatography, gas chromatography-mass spectrometry, HPLC, spectrophotometry, and capillary zone electrophoresis.…”

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confidence: 99%

A Novel Green Electrochemical Sensor Modified with ZnO Nanoparticles for Detection of Allura Red

Ehzari,

Darvishi

2023

J. Electrochem. Soc.

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Nowadays, the use of nano-sensors has been considered in order to detect various compounds. In the food industry, nano-sensors are used to detect toxins, microbes and various compounds. Allura red is a red azo dye that is used in health and cosmetic, pharmaceutical and food industries. Azo dyes have toxic effects and can cause oxidative stress response and change the expression of different genes. Therefore, it is important to detect and determine its concentration. In this study, a simple and novel electrochemical sensor modified with ZnO nanoparticles (ZnO NPs) synthesized by the green method was fabricated and used for electrochemical detection of Allura Red in food samples. Surface morphology and electrochemical properties of the prepared nanocomposite modified electrode were investigated by scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Under optimized conditions, the calibration plot was linear in the concentration renege of 0.01µM to 0.41 µM, and the limit of detection was found to be 0.001µM. The proposed sensor was successfully applied for determination of Allura Red in food samples.

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“…The formulas for CV and MB are C 25 H 30 ClN 3 and C 16 H 18 ClN 3 S, respectively. Dye removal methods can be separated into three main categories, biological, chemical, and physical [ 11 – 13 ]. Natural treatment using bacterial decolourisation has been reported as an economical alternative to chemical and physical treatment.…”

Section: Introductionmentioning

confidence: 99%

Decolourization of Crystal Violate and Methylene Blue Wastewater Using Anaerobic Fermented Bio-Waste

Leong

Tee

Lim

et al. 2023

Water Conserv Sci Eng

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Textile exchange is a popular term in the textile industry and has incorporated Sustainable Development Goals (SDGs) into its strategy for transformation. The advance of Industrial Revolution 4.0 digitised the textile industry and incorporated artificial intelligence (AI) into operation and supply chain to enhance production and improve product quality in different downstream processing. Malaysia’s textile industry has largely continued to contribute to the domestic economy. In the textile industry, refinement treatment is crucial to avoid water pollution derived from dye, organic pollutants, and heavy metals. Wastewater derived from textile industries must perform a pre-treat before discarding into the natural environment, as the excess dye in textile wastewater negatively impacts the environment. Untreated or inadequately treated wastewater and discharge to nearby water sources contribute to disease increase. Therefore, this study aims to elucidate microbiota biodiversity that can significantly remove or break down the dye in wastewater from the textile industry. This study selected two cationic dyes, crystal violet (CV), and methylene blue (MB). Through the findings, microbial consortium derived from the fermented bio-waste show no significant difference in the decolourisation of wastewater polluted with CV (< 13.53%). In contrast, the microbial population generated from fermented bio-waste showed remarkable outcomes on MB decolourisation up to 88.52% in 3 days of treatment. In the absence of laccase in fermented bio-waste, microbial consortium produced from the fermented bio-waste is ineffective in decolourising the wastewater containing CV compared to MB.

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Role of microorganisms in biodegradation of food additive Azo dyes: A review

Cited by 11 publications

References 22 publications

Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of Hibiscus cannabinus L.: Wastewater Purification and Antibacterial Activity

Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of Hibiscus cannabinus L.: Wastewater Purification and Antibacterial Activity

A Novel Green Electrochemical Sensor Modified with ZnO Nanoparticles for Detection of Allura Red

Decolourization of Crystal Violate and Methylene Blue Wastewater Using Anaerobic Fermented Bio-Waste

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