Main Article Content
Microbial succession refers to the changing microbial population in a natural of disturbed system. The aim of this study was to isolate and determine bacterial succession in anaerobic fermentation. Cow dung was collected from Oja-Oba in Ekiti State, Nigeria while the corn cob was collected from Ajayi Farms in Akure, Ondo State, Nigeria, and transported to Afe Babalola University (ABUAD) Farms, where it was ground into smaller pieces. One hundred kilograms of cow dung was mixed with water and transferred to digester A, 100 kg of corn cob was transferred to digester B and 50 kg each of cow dung and corn cob were transferred into digester C. Microorganisms were isolated using pour plate method from day 1 of the fermentation period and at 5 days intervals for the 30 days fermentation period. The bacterial isolates were identified on the basis of their morphological, biochemical characteristics and molecular analysis (DNA extraction, Polymerase Chain Reaction and gene sequencing). Some of the bacteria isolated were Escherichia coli CFT073, Arthrobacter citerus strain NEB577, Klebsiella aerogenes strain AR 0018, Pseudomonas aeruginosa PA01 and Acinetobacter lactucae strain ANC405. Microbial succession of bacteria also showed the dominant organisms belong to Phylum Proteobacteria, followed by phylum Firmicutes and phylum Acinetobacteria. The amount of gas compressed after fermentation in the digesters varied. Digester A- 60kg, Digester B- 12.5kg and Digester C- 64kg with percentage weight of gas of 54%, 50% and 56% respectively. The result from this experiment clearly showed that the anaerobic fermentation of cow dung and corn cob involved the interaction between diverse microbial populations at various stages of fermentation.
Keywords: cow dung, corn cob, anaerobic fermentation, bacterial succession
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors hold the copyright of all published articles except otherwise stated.
Ekundayo, A., Adetuyi, F. and Ekundayo, F. (2011). In vitro antifungal activities of bacteria associated with maize husks and cobs. Research Journal of Microbiology. 6: 418-424.
Franscisco, D., James, S., Elsas, D. Joana, F. (2015). Disentangling mechanisms that mediate the balance between balance stochastic and deterministic processes in microbial succession. Proceedings of the National Academy of Sciences of the United States of America.112: 1326-1332.
Huang, H., Geng, G., Yu, X., and Liu, Y. (2013). The state of processing in intensive dairy farm. China Dairy Cattle. 1:46–48.
Huhe J., Wu, Y. and Cheng, Y. (2017). Bacterial and fungal communities and contribution of physicochemical factors during cattle farm waste composting. Microbiology Open. 6:e00518.
Kang, W., Kim, I. H., Lee, T. J., Kim, K. Y. and Kim, D. (2014). Effect of temperature on bacterial emissions in composting of swine manure. Waste Management. 34, 1006–101.
Kanger, K. (2013). Biogas production under co-digestion of food waste with sewage sludge (Doctoral dissertation, Tartu Ülikool).
Liu, L., Wang, S., Guo, X., Zhao, T. and Zhang, B. (2017). Succession and diversity of microorganisms and their association with physicochemical properties during green waste thermophilic composting. Waste Management. 73:101–112.
López-González, J. A., Suárez-Estrella, F., Vargas-García, M. C., Jurado, M. J. and López Moreno, J. (2015). Dynamics of bacterial microbiota during lignocellulosic waste composting: studies upon its structure, functionality and biodiversity. Bioresource Technology. 175: 406–416.
Ogbulie, T.E. and Nwakanma, C. (2015). Microorganisms and man In Essential Analytical Methods in Biotechnology. WEBSmedia communication, Nigeria, p. 1-28.
Renaud, M., Chelinho, S., Alvarenga, P., Mourinha, C., Palma, P. and Sousa, J. P. (2017). Organic wastes as soil amendments - effects assessment towards soil invertebrates. Journal of Hazardous Material. 330:149–156.
Sambrook, J., Maccallum, P. and Russell, D. (2001). Molecular Cloning: A Laboratory Manual 3rd. Cold Spring Harbor Press, New York.
Zhang, L., Zhang, H., Wang, Z., Chen, G., and Wang, L. (2016). Dynamic changes of the dominant functioning microbial community in the compost of a 90- m3 aerobic solid state fermentor revealed by integrated metaomics. Bioresource Technology. 203: 1–10.
Zhou, H., Gu, W., Sun, W. and Hay, A. G. (2018). A microbial community snapshot of windrows from a commercial composting facility. Applied Microbiology Biotechnology
Chun, C. and Leigh, A. (2014). Metabolic versatility in methanogens. Current Opinion in Biotechnology 29:70-75.
Garcia-Sepulveda, C., Carrillo-Acuna, E. and Barrigo-Moreno, M. (2010). Maxiprep genomic DNA extraction for molecular epidemiology studies and biorepositors. Molecular Biology Reports 37:1883-1890
Chun, J. and Rainey, F. (2014). Integrating genomics into the taxonomy and systematics of bacteria and archaea. International Journal of Systematic and Evolutionary Microbiology 64:316-324.
Applied Biosystem (2010). BigDye Terminator v3.1 cycle sequencing kit protocol. Available (online) at www.appliedbiosystems.com
Reeza, M., Hamid, b., mehrdad, M., Samanesh, K. and Fatemah, S. (2012). Rapid DNA extraction of bacterial genome using laundry detergents and assessment of the efficiency of DNA downstream process using polymerase chain reaction. African Journal of Biotechnology 11:173-178.
Kumar, S., Stecher, G. and Tumura, K. (2016). MEGA 7: Molecular Evolutionary Genetics Analysis version 7.0 for bigger datasets. Molecular Biology and Evolution 33:1870-1874.