Comparison of the Biodegradation Capacity of Two Fungal Strains Toward a Mixture of Phenol and Cresol by Mathematical Modeling

Yemendzhiev, Husein; Златева, Пламена; Alexieva, Zlatka

doi:10.5504/bbeq.2012.0062

Cited by 7 publications

(6 citation statements)

References 8 publications

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“…niger B60 to be active at low phenol concentrations. Similar or even higher K S values concerning degradation of phenolics by fungal (50–300 mg/L) and bacterial species (1–130 mg/L) , have been also reported.…”

Section: Resultssupporting

confidence: 74%

“…The value of q m in WW was 2-fold higher than that in L (0.297 vs 0.129 1/h), indicating that the degradation rate was positively related to the initial TPP content. However, the lower K I values in TOPWs (113–120 mg/L) compared with the respective values reported for this fungus in synthetic medium containing a mixture of phenol and p -cresol as the only inhibitor (450–600 mg/L) indicated a lower tolerance level in the target waste streams. This is probable because of the presence of high levels of other inhibitory factors (i.e., NaOH) that stimulate further the inhibitory effects in TOPWs.…”

Section: Resultscontrasting

confidence: 57%

See 1 more Smart Citation

Changes in Phenolic Compounds and Phytotoxicity of the Spanish-Style Green Olive Processing Wastewaters by Aspergillus niger B60

Papadaki

Tsimidou

Mantzouridou

2018

J. Agric. Food Chem.

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This study systematically investigated the degradation kinetics and changes in the composition of phenolic compounds in Spanish-style Chalkidiki green olive processing wastewaters (TOPWs) during treatment using Aspergillus niger B60. The fungal growth and phenol degradation kinetics were described sufficiently by the Logistic and Edward models, respectively. The maximum specific growth rate (2.626 1/d) and the maximum degradation rate (0.690 1/h) were observed at 1500 mg/L of total polar phenols, indicating the applicability of the process in TOPWs with a high concentration of phenolic compounds. Hydroxytyrosol and the other simple phenols were depleted after 3-8 days. The newly formed secoiridoid derivatives identified by HPLC-DAD-FLD and LC-MS are likely produced by oleoside and oleuropein aglycon via the action of fungal β-glucosidase and esterase. The treated streams were found to be less phytotoxic with reduced chemical oxygen demand by up to 76%. Findings will provide useful information for the subsequent treatment of residual contaminants.

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Section: Resultssupporting

confidence: 74%

Section: Resultscontrasting

confidence: 57%

Changes in Phenolic Compounds and Phytotoxicity of the Spanish-Style Green Olive Processing Wastewaters by Aspergillus niger B60

Papadaki

Tsimidou

Mantzouridou

2018

J. Agric. Food Chem.

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“…for cell growth on phenol and p-cresol. Adding these terms makes the dynamics (1)-(3) more complicated, but as shown in [17], see also [5], the SKIP model (4) describes the trend of experimental data much better than other kinetic models.…”

Section: Model Descriptionmentioning

confidence: 99%

“…The review paper [2] reports on hundreds of isolated bacteria capable of degrading aromatic compounds, among them different strains of Aspergillus awamori, Arthrobacter, Burkholderia, Mycobacterium, Pseudomonas, Rhodococcus, Staphylococcus, Trametes hirsute etc. The biodegradation of one or all chemical components depends on the composition of the particular mixture and the used microorganisms [3][4][5]. The adequate analysis of interactions between the compounds and their influence on microbial growth is very important for understanding the simultaneous metabolism of phenolic mixtures [6].…”

Section: Introductionmentioning

confidence: 99%

Global Stability Analysis of a Bioreactor Model for Phenol and Cresol Mixture Degradation

Dimitrova

Златева

2021

Processes

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We propose a mathematical model for phenol and p-cresol mixture degradation in a continuously stirred bioreactor. The model is described by three nonlinear ordinary differential equations. The novel idea in the model design is the biomass specific growth rate, known as sum kinetics with interaction parameters (SKIP) and involving inhibition effects. We determine the equilibrium points of the model and study their local asymptotic stability and bifurcations with respect to a practically important parameter. Existence and uniqueness of positive solutions are proved. Global stabilizability of the model dynamics towards equilibrium points is established. The dynamic behavior of the solutions is demonstrated on some numerical examples.

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“…27 28 Many microorganisms are isolated and studied as phenol-degrading organisms such as Pseudomonas sp., 4 29-31 Acinetobacter sp., 4 32 Serratia marcescens, 33 Bacillus sp., 34 35 Alcaligenes faecalis, 36 Candida tropicalis 37 and Aspergillus awamori. 38 Another part of the investigations has shown that the bacteria of the genus Pseudomonas possess an exclusively flexible metabolism and play the role of dominant microorganisms in the communities specializing in biodegradation of arylcontaining xenobiotics. 4 The aim of the present study is to investigate the regulatory effect of nanodiamonds on phenol biodegradation (on the effectiveness and the rate of biodegradation and key enzyme activities-oxygenases and succinate dehydrogenase), accomplished by a dominant in industrially polluted sediments microbial culture of the genus Pseudomonas.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Nanodiamonds on Phenol Biodegradation by <I>Pseudomonas sp</I>. Strain Isolated from Polluted Sediments

Yotinov¹,

Todorova²,

Irina³

et al. 2016

j nanosci nanotechnol

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Carbon nanoparticles, which include nanodiamonds (ND), are used in a number of technological and medical applications. The influence of ND on the mechanisms and regulation of the degradation of xenobiotics in bioremediation technologies and in particular the biodegradation of aromatic hydrocarbons, however, remains unexplored. The aim of this paper is to investigate the effect of ND on the biodegradation of phenol in model conditions. The process of degradation was realized with a microbial culture of Pseudomonas sp. isolated from contaminated sediments. It was found that ND had a stimulating effect on the initial phase of biodegradation of phenol. ND led to an increase in all important parameters of biological detoxification-rate of phenol biodegradation by 154.86%, effectiveness of phenol detoxification by 151.15%. The stimulating effect was also found with regard to the enzyme activity of key oxygenases responsible for the complete degradation of phenol-phenol 2-monooxygenase, catechol-1,2-dioxygenase, catechol-2,3-dioxygenase. The study has proved that nanodiamonds can be used as a potential nanoregulator of detoxification and biodegradation processes.

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Comparison of the Biodegradation Capacity of Two Fungal Strains Toward a Mixture of Phenol and Cresol by Mathematical Modeling

Cited by 7 publications

References 8 publications

Changes in Phenolic Compounds and Phytotoxicity of the Spanish-Style Green Olive Processing Wastewaters by Aspergillus niger B60

Changes in Phenolic Compounds and Phytotoxicity of the Spanish-Style Green Olive Processing Wastewaters by Aspergillus niger B60

Global Stability Analysis of a Bioreactor Model for Phenol and Cresol Mixture Degradation

The Effect of Nanodiamonds on Phenol Biodegradation by <I>Pseudomonas sp</I>. Strain Isolated from Polluted Sediments

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