Nutrient optimization for the production of citric acid by Aspergillus niger NRRL 567 grown on peat moss enriched with glucose

Kim, J.-W.; Barrington, Suzelle; Sheppard, John D.; Lee, B.

doi:10.1016/j.procbio.2005.12.021

Cited by 30 publications

(10 citation statements)

References 23 publications

(32 reference statements)

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“…Their ability of secreting organic acids has been successfully applied in Pb remediation (Whitelaw, 2000;Coutinho et al, 2012;Li et al, 2016b). However, these processes would be influenced by pH, temperature, humidity, and nutrient supply (Kapoor et al, 1999;Mandal and Banerjee, 2005;Kim et al, 2006;Amini et al, 2008). For example, it showed that the Pb remediation by A. niger had the maximal effect at pH of approximately 5 (Amini et al, 2008) and P. oxalicum worked to the highest Pb removal at pH of approximately 4 when incubated with apatite (Tian et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

A new insight into lead (II) tolerance of environmental fungi based on a study of Aspergillus niger and Penicillium oxalicum

Tian

Jiang

et al. 2019

Environmental Microbiology

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Summary Environmental microorganisms have been widely applied in heavy metal remediation. This study explored the mechanisms of lead tolerance of two typical filamentous fungi, Aspergillus niger and Penicillium oxalicum. It is shown that the mechanisms of reducing Pb toxicity by these two fungi have three major pathways. The secreted oxalic acid can react with Pb (II) to form insoluble Pb minerals, primarily lead oxalate. Then, the enhanced biosorption via forming new border of cell wall prevents the transportation of Pb (II) into hypha. In addition, the fungal activity could be maintained even at high Pb concentration due to the intracellular accumulation. It was confirmed that A. niger has the higher Pb tolerance (up to 1500 mg l−1 Pb level) compared with P. oxalicum (up to 1000 mg l−1). Meanwhile, Pb levels below 1000 mg l−1 partially stimulate the bioactivity of A. niger, which was confirmed by its elevated respiration (from 53 to 63 mg C l−1 medium h−1). This subsequently enhanced microbial functions of A. niger to resist Pb toxicity. A better understanding of Pb tolerance of these two fungi sheds a bright future of applying them to remediate lead‐contaminated environments.

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Section: Introductionmentioning

confidence: 99%

A new insight into lead (II) tolerance of environmental fungi based on a study of Aspergillus niger and Penicillium oxalicum

Tian

Jiang

et al. 2019

Environmental Microbiology

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“…Due to especially high fermentable sugar content, these extracts may be also used in the production of other microbial substances such as organic acids, ethanol, biopolymer and single cell protein. On the other hand, many investigators reported that the culture media based on substrates of agro‐industrial origin could be enriched with some additional carbon and mineral sources 33–35. Hence, the modification of LKE or DLKE with additional substances may make these extracts more suitable for industrial fermentation studies.…”

Section: Resultsmentioning

confidence: 99%

Production of carotenoids by Rhodotorula glutinis MT-5 in submerged fermentation using the extract from waste loquat kernels as substrate

Taşkın

Erdal

2011

J. Sci. Food Agric.

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“…A. niger spores were produced on a potato dextrose agar (Sigma, St. Louis, MO, USA) plates kept at 30 o C. After ten days of incubation on potato dextrose agar plates, 10 ml of 0.1% Tween 80 (Sigma, St. Louis, MO, USA) was added to each plate to harvest the spores. Diluted spore suspensions of 4.0×10 6 spores/ml were counted with a hemocytometer and prepared as inoculum as described by Kim et al [12].…”

Section: Microorganismmentioning

confidence: 99%

Optimization of citric acid production by Aspergillus niger NRRL 567 grown in a column bioreactor

Barrington

Kim

Wang

et al. 2009

Korean J. Chem. Eng.

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Citric acid production using Aspergillus niger NRRL 567 grown on peat moss has been optimized in a column bioreactor using a statistically based method. A 2 3 full factorial design with eight fermentation conditions was applied to evaluate significance on citric acid production and their interactions between variables, where the three independent variables evaluated were aeration rate, bed depth and temperature. Aeration rate and fermentation temperature were identified to be significant variables. Citric acid production markedly increases with aeration rate and fermentation temperature; however, the bed depth of solid substrate showed an insignificant effect on citric acid production. The optimum fermentation condition for citric acid production in a column bioreactor consisted of aeration rate of 0.84 vvm, bed depth of 22 cm and fermentation temperature of 32 o C. Under a given condition, a maximum citric acid production of 120.6 g/l was predicted and matched well with the experimental value of 123.9 g/kg.

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Nutrient optimization for the production of citric acid by Aspergillus niger NRRL 567 grown on peat moss enriched with glucose

Cited by 30 publications

References 23 publications

A new insight into lead (II) tolerance of environmental fungi based on a study of Aspergillus niger and Penicillium oxalicum

A new insight into lead (II) tolerance of environmental fungi based on a study of Aspergillus niger and Penicillium oxalicum

Production of carotenoids by Rhodotorula glutinis MT-5 in submerged fermentation using the extract from waste loquat kernels as substrate

Optimization of citric acid production by Aspergillus niger NRRL 567 grown in a column bioreactor

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