Biodegradation Kinetics of Four Substituted Chlorobenzoic Acids by<i>Enterobacter aerogenes</i>

Tarawneh, Khaled A.; Irshaid, Fawzi I.; Ajlundi, Isam H.; Abboud, Muayad M.; Mohammed, V. Noor; Khleifat, Ali M.

doi:10.1080/10889861003745676

Cited by 9 publications

(5 citation statements)

References 33 publications

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“…However, the chloride production increase was not stiochemetricaly symmetrical to the degradation of chlorobenzoic acid compounds (Figure 1). This could be attributed to the precipitation of the AgCl precipitate as well as to the loss of some chloride atom in other forms not measured in the procedure used her (Tarawneh et al, 2010). Environmental factors such as pH, temperature, and other conditions in the environment may affect the growth of C. jeikeium and their ability to degrade the 3,4-DCBA.…”

Section: Discussionmentioning

confidence: 99%

Optimizing the Biodegradation of 3,4-Dichlorobenzoic Acid by Corynebacterium jeikeium

Alqudah¹,

Tarawneh²,

Alkafaween³

et al. 2014

IJB

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Chlorinated benzoic acids (CBA) have been intentionally released to the environment due to their use in agriculture as herbicides or pesticides, or unintentionally because they are common metabolites in the aerobic transformation of many chlorinated pollutants. The biodegradation of 3,4-dichlorobenzoic acid compound was investigated by using Corynebacterium jeikeium bacteria, which was isolated from Petra wastewater plant in Jordan. 3,4-dichlorobenzoic acid compound (3,4-DCBA) was used as a sole carbon and energy source in minimal salt media (MSM). 3,4-DCBA was the most degradable compound among the Chlorobenzoic acid compounds tested by this bacteria. Different conditions such as substrate concentration, temperature, pH, agitation rate, carbon starvation and carbon adaptation were used to obtain optimal Biodegradation. The optimal conditions for the biodegradation were 3mM as substrate concentration and the culture conditions were also showed a significant impact on the ability of these cells to remove 3,4-DCBA. The optimum solution, temperature and agitation rate were 7.5, 37 °C and 150 rpm, respectively. Adaptation of the cells to 3,4-DCBA for 24 hr and 48 hr and cells starvation for 24 hr and 48 hr increased the initial degradation rate. The degradation ability was monitored through disappearance of the substrate from the medium and the measuring the accompanying chloride release. Corynebacterium jeikeium dioxygenases were physiologically induced by 3,4-DCBA compound. They were analyzed for both ortho or meta ring-cleavage of this aromatic compound. Only 1,2-dioxygenase activity was detected which mean that the cleavage is through the ortho pathway. This microorganism can be a valuable and promising candidate for use in the biotreatment of wastewater samples contaminated with 3,4-DCBA.

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Section: Discussionmentioning

confidence: 99%

Optimizing the Biodegradation of 3,4-Dichlorobenzoic Acid by Corynebacterium jeikeium

Alqudah¹,

Tarawneh²,

Alkafaween³

et al. 2014

IJB

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“…In the last two decades, an increasing interest has been observed for utilizing microorganisms such as bacteria for removal of various aromatic compounds from the environment [9] [12] [13]. This was due to the fact that bacteria can adapt quickly to various conditions, reproduce quickly, and have simple growth and storing requirements.…”

Section: Introductionmentioning

confidence: 99%

“…This was due to the fact that bacteria can adapt quickly to various conditions, reproduce quickly, and have simple growth and storing requirements. Several studies demonstrated that bacteria such as Arthrobacter sp., Acinetobacter calcoaceticus, Pantoea agglomerans, Enterobacter cloacae, Ewingella Americana, Kleblsiella oxytoca, Actinobacillus and Enterobacter aerogenes were capable to grow on some selected aromatic compounds as their sole carbon and energy sources or degrading them as co-metabolic substrates [13]- [17].…”

Section: Introductionmentioning

confidence: 99%

Toluene Biodegradation by Novel Bacteria Isolated from Polluted Soil Surrounding Car Body Repair and Spray Painting Workshops

Jacob

Irshaid

2015

JEP

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Toluene can enter the environment due to various industrial activities. Toluene exposure may cause serious health risks to human and other living organisms. Thus, removal of toluene from the environment is exceptionally important in toluene-contaminated habitats. The aim of present study was to isolate and characterize toluene-utilizing bacteria from contaminated soil surrounding car body repair and painting workshops in Irbid industrial city, Jordan. Therefore, polluted soil samples (10 g) were transferred to flasks containing 99 ml of Stanier's medium supplemented with 1% toluene and aerobically incubated at 30˚C for 72 h. Subsequently, four morphologically different toluene-utilizing bacteria, designated as T1, T2, T3, and T4, were isolated. The cells of T1, T2 and T3 were Gram-positive, rod-shaped, aerobic, and positive for oxidase and catalase. However, the cells of T4 were Gram-negative, round-shaped, aerobic, negative for oxidase, and positive for catalase. Based on 16S rDNA sequencing data, isolates T1, T2 and T3 had high homology (97%-98%) with Lysinibacillus boronitolerans, Bacillus subtilis and Rhodococcus pyridinivorans, respectively, whereas the isolate T4 had a homology of 89% with Acinetobacter schindleri, and could represent a distinct lineage within the genus Acinetobacter. The generated 16S rDNA sequences were deposited in GenBank database. After testing different physicochemical conditions, the isolates appeared to grow best at 1% toluene, 30˚C and pH 6.8, with the generation times ranged between 8-11 h. In conclusion, we reported for the first time the identification of four novel soil bacterial species with the capacity to utilize toluene as sole source of carbon and energy from soil sites surrounding car painting workshops. The beneficial effect of the four isolates in the bioremediation of toluene from toluene polluted soil areas must be examined under in situ and ex situ conditions.

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“…As long as the majority of the world's population (60-80%) depend on medications to treat diseases (Tarawneh et al, 2010;Zeidan et al, 2013;Majali et al, 2015;Alrawashdeh et al, 2019; . However, in addition to the environmental activity, which is the disposal of these organic pollutions by microbes, they are useful as models for identifying many of various active biological compounds of medicinal plants ( (Tarawneh et al, 2011;Tarawneh et al, 2019).…”

Section: Mechanism Of Phenol Degradation Via Bacteriamentioning

confidence: 99%

Biodegradation of Phenol: Mini Review

et al. 2022

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This paper is a comprehensive review related to the biological degradation of phenol by microorganisms. The aromatic compound, phenol or hydroxybenzene, is produced industrially or naturally. Many microorganisms that are able to biodegrade phenol have been isolated and at the same time, the metabolic pathways responsible for these metabolic processes have been determined. A large number of bacteria were studied in detail especially, pure cultures as well as the pathways of aerobic phenol metabolism and the enzymes involved. Phenol oxygenation occurred as the initial steps through phenol hydroxylase enzymes leading to formation of catechol, pursued by the splitting of the adjacent ring or in between the two groups of catechol hydroxyls. Thus, the physical and chemical environments plus the chemical structures that affecting biodegradation processes are important determining factors for combating of pollution. This nature of chemical structure for the other aromatic compounds is also a main decisive factor of biodegradability.

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Biodegradation Kinetics of Four Substituted Chlorobenzoic Acids byEnterobacter aerogenes

Cited by 9 publications

References 33 publications

Optimizing the Biodegradation of 3,4-Dichlorobenzoic Acid by Corynebacterium jeikeium

Optimizing the Biodegradation of 3,4-Dichlorobenzoic Acid by Corynebacterium jeikeium

Toluene Biodegradation by Novel Bacteria Isolated from Polluted Soil Surrounding Car Body Repair and Spray Painting Workshops

Biodegradation of Phenol: Mini Review

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