| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10999745 | Bioresource Technology Reports | 2018 | 30 Pages |
Abstract
About 73 bacterial strains were isolated from poultry dump sites in Punjab and an isolate showing high keratinolytic activity was identified as Bacillus aerius NSMk2. Strain showed prompt hydrolysis of white chicken feathers on minimal salt medium (MSM) after 5â¯days of cultivation. Melanized chicken, pigeon and duck feathers could also be degraded by bacteria with high activity to duck and pigeon feathers. MSM supplemented with fructose and beef extract supported higher feather keratinase production and improved degradation of white chicken feathers. Feather concentration 1.375%, pHâ¯7.5 and temperature 35â¯Â°C showed maximum feather keratinase activity (127.63â¯U/ml) after 2â¯days which was 7-fold higher than activity on minimal salt medium. Time for complete degradation of white chicken feathers was reduced to 3â¯days on optimized medium. The results of present investigation showing potential keratinolytic ability of Bacillus aerius NSMk2 could provide an environmental friendly approach for bioconversion of poultry waste.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Bioengineering
Authors
Ranjeeta Bhari, Manpreet Kaur, Ram Sarup Singh, Ashok Pandey, Christian Larroche,