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Journal of Advances in Biology & Biotechnology, 2394-1081,Vol.: 5, Issue.: 2


Isolation and Identification of Keratinolytic Bacteria that Exhibit Feather-degrading Potentials


F. O. Iruolaje1*, J. Ogbeba1, M. Y. Tula2, J. A. Ijebor1 and B. A. Dogo3

1Department of Science Laboratory Technology, Federal Polytechnic Bauchi, P.M.B. 0231, Bauchi State, Nigeria.

2Department of Biological Science Technology, Federal Polytechnic Mubi, Adamawa State, Nigeria.

3National Agency for Food and Drug Administration and Control (NAFDAC), Federal Secretariat Complex, Oke-Mosan, Abeokuta, Ogun State, Nigeria.

Article Information
(1) Joana Chiang, Department of medical laboratory Science and Biotechnology, China Medical University, Taiwan.
(1) Mohamed Adel Ali Hassan, Genetic Engineering and Biotechnology Research Institute (GEBRI), Egypt.
(2) Leena Parihar, Lovely Professional University, India.
(3) Jarina Joshi, Tribhuvan University, Nepal.
(4) Temitope Elizabeth Alori, Landmark University, Nigeria.
(5) Anonymous, India.
Complete Peer review History: http://sciencedomain.org/review-history/12650


Aims: To isolate and identify feather degrading bacteria from soils collected from the feather dumping site.

Study Design: Isolation and preliminary identification of bacterial isolates with keratinolytic potentials.

Place and Duration of Study: Mudalawal poultry processing site, Bauchi state, Nigeria, between January 2014 to October, 2014.

Methods: Soil samples from feather dumping sites were screened for bacterial growth. The isolated bacteria were identified based on their morphological and biochemical characteristics and were tested for their ability to degrade whole intact feather and powdered feather samples.

Results: The results showed that three (3) of the isolates belonged to the genus Bacillus which include; Bacillus licheniformis, Bacillus subtilis and Bacillus cereus, while one isolate is a Gram-negative rod, Serratia marcencens. Although B. licheniformis demonstrated higher feather degrading ability but with no statistical difference from other isolates in degrading both powdered and intact whole feathers samples. Synergy among the isolates to degrade powdered feather showed no statistical difference (p=0.317). Also, synergy among all the isolates resulted in degradation of intact feather significantly higher than that of S. marcescens, but not significantly different from those of B. licheniformis (p=0.389), B. subtilis (p=0.096) and B. cereus (p=0.096). Moreover, the keratinolytic ability of the isolates on intact whole feather was time dependent. It was also observed that the rate of degradation of powder feather samples was significantly higher than the rate of degradation of intact whole feather by all the isolates (p=0.026).

Conclusion: These isolates are therefore promising organisms for the management of chicken feather waste through biotechnological processes.

Keywords :

Bacillus; keratinolytic-bacteria; feather.

Full Article - PDF    Page 1-9

DOI : 10.9734/JABB/2016/22082

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