Catechol biodegradation kinetics using Candida parapsilopsis

Rigo, Maurício; Alegre, Ranulfo Monte; Bezerra, José Raniere Mazile Vidal; Coelho, Narjara; Bastos, Reinaldo Gaspar

doi:10.1590/s1516-89132010000200029

Cited by 14 publications

(5 citation statements)

References 15 publications

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“…Pyrocatechol concentrations in each experiment were determined by DR4000 spectrophotometer by analyzing color with wavelength 600nm (26,27). Concentration of pyrocatechol wasmeasured after 2, 4, 6, 8, 10, 12, and 14 days ofexposure.…”

Section: Lab Studiesmentioning

confidence: 99%

Pyrocatechol Removal From Aqueous Solutions by Using Azolla Filiculoides

2013

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Azolla with different biomass (0.3, 0.6, 0.9, 1.2 g) has been cultured in solutionwhichwas contained 5, 10, 25, and 50 ppm Pyrocatechol. Each exam repeated twice. Samples were collected every 2 days from all of containers. The analytical determination of Pyrocatechol was performed by using DR4000 spectrophotometer by analyzing the color resulting with the wavelength of 600nm. Results:The results showed that Azolla has high ability to remove Pyrocatechol from aqueous solutions. The Pyrocatechol removal was 60-90%. The removal efficiency wasincreasing with decreasing Pyrocatechol concentration, and increasing biomass amount, and vice versa. The removal efficiency was more than 90% when Pyrocatechol concentration was 5 ppm, and amount of biomass was 0.9 gr. Conclusions: It is concluded that Azolla is able to accumulate and remove Pyrocatechol from the aqueous solutions. Since conventional methods of Pyrocatechol removal need high cost and energy, Phytoremediation by Azolla as a natural treatment system can decrease those issues, and it can be a useful and beneficial method for theremoval of Pyrocatechol.

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Section: Lab Studiesmentioning

confidence: 99%

Pyrocatechol Removal From Aqueous Solutions by Using Azolla Filiculoides

2013

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“… Pyne et al (2018) obtained a high-yield S. cerevisiae strain using CA 1,2-dioxygenase gene transfer and Aro1p engineering degradation technology. However, previous studies have revealed that CA can cause lethal toxicity in people and inhibit the growth and metabolism of microorganisms ( Kumar et al, 2005 ; Rigo et al, 2010 ; Maini Rekdal et al, 2020 ). Such harm manifests itself as NADH uncoupling and generation of large amounts of hydrogen peroxide when CA concentration rises as well as CA-induced irreversible damage to biological molecules such as DNA, proteins, and membranes in organisms.…”

Section: Introductionmentioning

confidence: 99%

Genome-wide identification of resistance genes and response mechanism analysis of key gene knockout strain to catechol in Saccharomyces cerevisiae

Liao,

Li,

Chen

et al. 2024

Front. Microbiol.

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Engineering Saccharomyces cerevisiae for biodegradation and transformation of industrial toxic substances such as catechol (CA) has received widespread attention, but the low tolerance of S. cerevisiae to CA has limited its development. The exploration and modification of genes or pathways related to CA tolerance in S. cerevisiae is an effective way to further improve the utilization efficiency of CA. This study identified 36 genes associated with CA tolerance in S. cerevisiae through genome-wide identification and bioinformatics analysis and the ERG6 knockout strain (ERG6Δ) is the most sensitive to CA. Based on the omics analysis of ERG6Δ under CA stress, it was found that ERG6 knockout affects pathways such as intrinsic component of membrane and pentose phosphate pathway. In addition, the study revealed that 29 genes related to the cell wall-membrane system were up-regulated by more than twice, NADPH and NADP+ were increased by 2.48 and 4.41 times respectively, and spermidine and spermine were increased by 2.85 and 2.14 times, respectively, in ERG6Δ. Overall, the response of cell wall-membrane system, the accumulation of spermidine and NADPH, as well as the increased levels of metabolites in pentose phosphate pathway are important findings in improving the CA resistance. This study provides a theoretical basis for improving the tolerance of strains to CA and reducing the damage caused by CA to the ecological environment and human health.

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“…Phenolic compounds such as catechol have been listed as priority-pollutants by EPA, USA [2,3]. Catechol is fatally toxic to fish at concentrations of 5–25 mg/L and it inhibits biological growth in microorganisms [4,5]. It has been detected in wastewater from coal conversion processes, crude wood tar, and drainage water from bituminous shale and in the outflow from coal-tar chemical production.…”

Section: Introductionmentioning

confidence: 99%

“…Many groups of aerobic bacteria are capable of using aromatic compounds as sole carbon and energy sources. There have been several reports on the biodegradation of catechol by some microbial strains under aerobic conditions such as Pseudomonas putida [4], Aspergillus awamori [14] and Candida parapsilopsis [5]. The bacterial strain Pseudomonas putida in a basal salt medium (BSM) at 29.9°C and pH 7 demonstrated the complete degradation of 500 mg/L of catecholin 94 h [4].…”

Section: Introductionmentioning

confidence: 99%

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Biological degradation of catechol in wastewater using the sequencing continuous-inflow reactor (SCR)

Aghapour

Moussavi

Yaghmaeian

2013

J Environ Health Sci Engineer

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Catechol is used in many industries. It can be removed from wastewater by various methods but biological processes are the most superior and commonly used technology. The SCR is a modified form of SBR used to degrade catechol. The objective of this study was to investigate the performance of SCR for biodegradation and mineralization of catechol under various inlet concentrations (630–1500 mg/L) and hydraulic retention times (HRT) (18–9 h). This study used a bench scale SCR setup to test catechol degradation. The acclimation time of biomass for catechol at degradation at 630 mg/L was 41 d. The SCR operating cycle time was 6 h and the consecutive times taken for aerating, settling and decanting were 4, 1.5 and 0.5 h, respectively. This study investigated the effects of inlet catechol concentration (630–1560 mg/L) and HRT (18–9 h). The average catechol removal efficiencies in steady-state conditions of 630, 930, 12954 and 1559 mg/L of catechol were 98.5%, 98.5%, 98.2% and 96.9% in terms catechol and 97.8%, 97.7%, 96.4% and 94.3% for COD, respectively. SCR with acclimated biomasses could effectively remove the catechol and the corresponding COD from wastewater with concentrations of up to 1560, at the loading rate of 5.38 kg COD/m3.d and at a HRT of up to 13 h. The HRT was determined as an important variable affecting catechol removal from wastewater. Reducing the HRT to below 13 h led to reduced removal of catechol and COD.

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Catechol biodegradation kinetics using Candida parapsilopsis

Abstract: ABSTRACT

Cited by 14 publications

References 15 publications

Pyrocatechol Removal From Aqueous Solutions by Using Azolla Filiculoides

Pyrocatechol Removal From Aqueous Solutions by Using Azolla Filiculoides

Genome-wide identification of resistance genes and response mechanism analysis of key gene knockout strain to catechol in Saccharomyces cerevisiae

Biological degradation of catechol in wastewater using the sequencing continuous-inflow reactor (SCR)

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