Influence of nitrilotriacetic acid and 8-hydroxyquinoline on the production of citric acid from molasses using Aspergillus niger |
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| Institution: | 1. Department of Physics, Sacred Heart College, Tirupattur, Vellore District, Tamil Nadu 635 601, India;2. Department of Physics, Auxilium College, Vellore, Vellore District, Tamil Nadu 635 601, India;3. Department of Physics, St. Joseph’s College, Tiruchirapalli, Tamil Nadu 620 002, India;1. State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China;2. Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China;1. Department of Physics, Sacred Heart College (Autonomous), Tirupattur, 635601, Tamil Nadu, India;2. Department of Physics, Auxilium College, Vellore, 632006, Tamil Nadu, India;3. Department of Electrical and Electronic Engineering, National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India;4. UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk Ridge, PO Box 392, Pretoria, South Africa;5. Nanosciences African Network (NANOAFNET), Materials Research Group (MRG), iThemba LABS-National Research Foundation (NRF), 1 Old Faure Road, 7129, PO Box 722, Somerset West, Western Cape Province, South Africa |
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| Abstract: | The effect of nitriloacetic acid (NTA) and 8-hydroxyquinoline on the production of citric acid by Aspergillus niger was investigated. The complexing agents showed an effect only during inoculation of the microorganism. Subsequent addition after inoculation did not produce any significant increase in citric acid yield. When 200 ppm of NTA was added during inoculation, an increase of 10.9 g·dm−3 citric acid over that produced by the control culture was observed. 8-Hydroxyquinoline, on the other hand, produced a higher concentration of citric acid which was 34 g·dm−3 over that of the control culture. The use of 8-hydroxyquinoline is therefore suggested for the production of citric acid from molasses using Aspergillus niger. |
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