Efecto de algunos factores fisiológicos en la producción de ácido cítrico por tres aislamientos de Aspergillus niger empleando aserrín hidrolizado como fuente de carbono

Autores/as

  • Muna, B. Abdulazeez Department of pharmacy, Duhok Technical Institute, University of Duhok Polytechnic, Duhok, Iraq
  • Mustafa M. Haider Department of Biology, College of Science, University of Duhok, Duhok , Iraq

DOI:

https://doi.org/10.15649/2346075X.477

Palabras clave:

Sawdust hydrolysis, Citric acid, Aspergillus niger isolates.

Resumen

Introduction: Citric acid (2-hydroxy-propane-1, 2, 3-tricarboxylic acid) was first isolated from lemon juice in 1784. It is a primary metabolic product which is formed in the tricarboxylic acid (Krebs) cycle. It is estimated that the market value of citric acid will exceed two billion dollars in 2019. About 70% of total citric acid produced globally is utilized in food industry, while about 12% is utilized in pharmaceuticals and cosmetic industries and the remainder in other industrial purposes. The industrial production of citric acid is undertaken by fermentation process in the presence of filamentous fungi for large scale of production. Aspergillus niger is the most efficient fungus due to its ability to produce more citric acid per unit time and ferment different inexpensive raw materials. Materials and Methods: Three isolates of the fungus Aspergillus niger (An1, An2, An3) were used throughout this study using different carbon source concentration in the form of sawdust acid hydrolysis supplemented with different concentration of (NH4)2H2SO4 as a nitrogen source. The effect of hydrogen ion concentration and addition of methanol to the fermentation medium was also investigated. Results and Discussion: The results indicated that the optimization of carbon and nitrogen concentration had stimulating
effect on citric acid production by the three used isolates. Moreover, addition of methanol at concentration of 1% at pH of 3.5 highly increased citric acid production. Conclusion: we concluded that the agriculture waste was a favorable substrate for the production of citric acid especially it is cost effective and easily obtainable.

Biografía del autor/a

Muna, B. Abdulazeez, Department of pharmacy, Duhok Technical Institute, University of Duhok Polytechnic, Duhok, Iraq

Department of pharmacy, Duhok Technical Institute, University of Duhok Polytechnic, Duhok, Iraq

Mustafa M. Haider, Department of Biology, College of Science, University of Duhok, Duhok , Iraq

Department of Biology, College of Science, University of Duhok, Duhok , Iraq

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Publicado

2018-12-28

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Abdulazeez, M. B. ., & Haider, M. M. . (2018). Efecto de algunos factores fisiológicos en la producción de ácido cítrico por tres aislamientos de Aspergillus niger empleando aserrín hidrolizado como fuente de carbono. Innovaciencia, 6(2), 1–9. https://doi.org/10.15649/2346075X.477

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Artículo de investigación científica y tecnológica

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