Isolation and characterization of an acrylamide‐degrading yeast <i>Rhodotorula</i> sp. strain MBH23 KCTC 11960BP

Rahim, Mohd. Badrin Hanizam Abd; Syed, Mohd Arif; Shukor, Mohd Yunus

doi:10.1002/jobm.201100116

Cited by 23 publications

(27 citation statements)

References 31 publications

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“…Polyacrylamide is made from this component. Stabilizing tunnels and dams, as well as sewage-flocculating agents, and industrial adhesive applications are just some of the ways this polymer may be put to use (Rahim et al 2012). Cows and fish have died in Sweden owing to acute acrylamide poisoning caused by environmental pollution [25].…”

Section: Resultsmentioning

confidence: 99%

“…[29] and the yeast Rhodotorula sp. Rahim et al [18] and Pseudonocardia thermophilic [30]. Tropical soils often have lower pH levels due to vigorous metabolic activity, such as the generation of organic acid and the production of carbon dioxide.…”

Section: Discussionmentioning

confidence: 99%

“…Rhodococcus rhodochrous [37], Bacillus clausii and Burkholderia sp. [18], Pseudomonas sp. [36] and Bacillus cereus [3] require glucose at concentrations ranging from 0.5 to 2.0% (w/v).…”

Section: Discussionmentioning

confidence: 99%

“…Microorganisms that have been reported as capable of utilizing acrylamide include the yeast Rhodotorula sp. [18], Pseudomonas sp. [19], the fungi Aspergillus oryzae [20], the bacterium Enterobacter aerogenes [21], Burkholderia sp.…”

Section: Introductionmentioning

confidence: 99%

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An Acrylamide-degrading Bacterial Consortium Isolated from Volcanic Soi

Rusnam

Gusmanizar

2021

J Biochem Microbiol Biotechnol

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In soil, polyacrylamide is a key source of acrylamide because it slowly decomposes into acrylamide. There has been a modest but steady rise in worldwide interest in microbe-mediated acrylamide decomposition as a bioremediation method. A bacterial consortium isolated from the volcanic soil of Mount Marapi, West Sumatra, Indonesia, was able to thrive on acrylamide in this study. Acrylamide-degrading bacteria grew best in the presence of 1 %(w/v) glucose with acrylamide as the sole nitrogen source. Optimum growth occurs in between 300 and 500 mg/L of acrylamide, pH between 6.5 and 8.0, and temperatures between 30 and 35 °C. The consortium can also grow on acetamide as the sole nitrogen source. Toxic heavy metals, such as mercury, silver and copper slowed down the growth of this consortium on acrylamide. This is the first report of an acrylamide-degrading consortium isolated from volcanic soils.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Rhodococcus rhodochrous [37], Bacillus clausii and Burkholderia sp. [18], Pseudomonas sp. [36] and Bacillus cereus [3] require glucose at concentrations ranging from 0.5 to 2.0% (w/v).…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Acrylamide-degrading Bacterial Consortium Isolated from Volcanic Soi

Rusnam

Gusmanizar

2021

J Biochem Microbiol Biotechnol

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“…It is the building block for the polymer, polyacrylamide. This polymer has many uses such as stabilising tunnels and dams, as sewage-flocculating agents, and as industrial adhesives [32]. It has been reported in Sweden that acrylamide poisoning caused by environmental contamination has caused the death of cows and fish [33], among other animals.…”

Section: Introductionmentioning

confidence: 99%

Isolation of A Molybdenum-reducing Bacillus sp. strain Zeid 15 and Modeling of its Growth on Amides

Zeid

Rahman

Shukor

2021

Bull Environ Sci Sust Manage

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More and more people are looking at bioremediation as a cheaper option to physhiochemical techniques for cleaning up pollution from farming, mines, and other chemical industries. Toxic effects of molybdenum on spermatogenesis harm not only humans but also livestock and aquatic life. As a result, efforts are being made to remove it from the ecosystem. A microorganism that can convert soluble molybdenum into colloidal molybdenum blue has been discovered. Phosphate concentrations were optimum between 2.5 and 5, molybdate concentrations between 15 and 20, pH between 6, and temperature between 25 and 34 degrees Celsius for the bacteria to thrive. Absorption spectrum of Mo-blue shows a peak at 865 nm and a shoulder at 700 nm, which indicates that it is in fact reduced phosphomolybdate. Copper, mercury, silver, copper, and chromium are all hazardous heavy metals that hinder the synthesis of Mo-blue. Bacillus sp. strain Zeid 15 is the most likely candidate for the bacterium's identity. As part of our screening, we look for the bacterium's capacity to employ different nitriles and amides as potential electron donors for molybdenum reduction or as substrates for growth. A microplate format was used for the screening. The bacterium was able to use the amides acrylamide and propionamide as sources of electron donor for reduction. Mo-blue production was best supported by acrylamide between 750 and 1250 mg/L, and propionamide between 750 and 1000 mg/L. In addition, these amides including acetamide could support the growth of the bacterium. The modified Gompertz model was utilized to model the growth of this bacterium on amides. The model’s growth parameters obtained were lag periods of 1.372, 1.562 and 1.639 d and maximum specific growth rates of 1.38, 0.95 and 0.734 d-1, for acrylamide, acetamide and propionamide, respectively. The capacity of this bacterium to decontaminate simultaneously amides and molybdenum is a novel characteristic that will be very beneficial in bioremediation.

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Biodegradation of Polyacrylamide and Its Derivatives

Joshi

Abed

2017

Environ. Process.

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Isolation and characterization of an acrylamide‐degrading yeast Rhodotorula sp. strain MBH23 KCTC 11960BP

Cited by 23 publications

References 31 publications

An Acrylamide-degrading Bacterial Consortium Isolated from Volcanic Soi

An Acrylamide-degrading Bacterial Consortium Isolated from Volcanic Soi

Isolation of A Molybdenum-reducing Bacillus sp. strain Zeid 15 and Modeling of its Growth on Amides

Biodegradation of Polyacrylamide and Its Derivatives

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