Vet World Vol.10 August-2017 Article-23
Research Article
Veterinary World, 10(8): 973-978
https://doi.org/10.14202/vetworld.2017.973-978
Isolation and characterization of bacteriophages with lytic activity against common bacterial pathogens
2. Department of Animal Nutrition, College of Veterinary Science & Animal Husbandry, Anjora, Chhattisgarh Kamdhenu Vishwavidyalaya, Durg, Chhattisgarh, India.
Background and Aim: Present investigation was conducted to isolate and characterize bacteriophages with lytic activity against common bacterial pathogens.
Materials and Methods: A total of 60 samples of animal waste disposal from cattle (42) and buffalo (18) farms were collected from three different strata, i.e., top, mid, and bottom of collection tank. Samples were primarily subjected to rapid detection methods, and then isolation of phage was done by double agar layer method using Bacillus subtilis (BsH) and Escherichia coli (EH) as host system. Phages were characterized on the basis of plaque morphology, temperature, pH susceptibility, and host range.
Results: Recovery of phages was higher from dairy cattle farm waste (78.57%) as compared to buffalo farm waste (72.22%) and bottom layer of tank showed maximum recovery. Bacillus subtilis (91%) supported the growth of more phages as compared to E. coli (9%). Three different phage morphotypes were observed each against Bacillus subtilis (BsHR1, BsHR2, and BsHR3) and E. coli (EHR1, EHR2, and EHR3). Mean phage titer of above six phage isolates ranged between 3x1010 and 5x1012 plaque forming units/ml. Viability of phages was by, and large unaffected at 70°C within 2-3 min, and phage isolates were completely inactivated below pH 3 and above 11. Coliphage EHR1 had widest host range followed by BsHR1 and BsHR2 while EHR2, EHR3, and BsHR3 had low lytic activity.
Conclusion: It could be concluded from the present study that the Bacillus and Coli phage has wide host range and thus exhibits the potential to be used as drug substitute tool against common bacterial pathogens. Keywords: Bacillus subtilis, bacteriophage, Escherichia coli, host range, sewage.
Keywords: Bacillus subtilis, bacteriophage, Escherichia coli, host range, sewage.
How to cite this article: Shende RK, Hirpurkar SD, Sannat C, Rawat N, Pandey V (2017) Isolation and characterization of bacteriophages with lytic activity against common bacterial pathogens, Veterinary World, 10(8): 973-978.
Received: 26-04-2017 Accepted: 25-07-2017 Published online: 23-08-2017
Corresponding author: C. Sannat E-mail: csannat@rediffmail.com
DOI: 10.14202/vetworld.2017.973-978
Copyright: Shende, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.