Abstract
Abstract: 1. Poultry processing generates a large quantity of feather waste. Feathers are a rich source of keratin and could be used as a feather meal in the feed industry if the keratin is degraded using suitable micro-organisms.2. In this study, keratin-degrading micro-organisms were isolated from a poultry farm. The predominant organisms were identified as Bacillus subtilis, Aspergillus flavus, A. fumigatus and Trychophyton sp. 3. The isolates were inoculated into feather medium and observed for keratin degradation by measuring the protein content, free amino acids and change in pH. 4. During feather degradation by B. subtilis, the concentration of soluble protein released to the medium increased gradually and reached the maximum (433 µg/ml) during d 7 of incubation and the pH increased from the initial 6.9 to 8.4 on d 9 of incubation. Similarly, the maximum protein content of 414 µg/ml and pH of 8.5 was observed for A. fumigatus on d 21 of incubation. 5. B. subtilis and A. fumigatus showed almost the same level of keratinase activity.
| Original language | English |
|---|---|
| Pages (from-to) | 210-217 |
| Number of pages | 8 |
| Journal | British Poultry Science |
| Volume | 56 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Mar 4 2015 |
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ASJC Scopus subject areas
- Animal Science and Zoology
- Food Science
Cite this
Keratin degradation by bacteria and fungi isolated from a poultry farm and plumage. / Sivakumar, N.; Raveendran, S.
In: British Poultry Science, Vol. 56, No. 2, 04.03.2015, p. 210-217.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Keratin degradation by bacteria and fungi isolated from a poultry farm and plumage
AU - Sivakumar, N.
AU - Raveendran, S.
PY - 2015/3/4
Y1 - 2015/3/4
N2 - Abstract: 1. Poultry processing generates a large quantity of feather waste. Feathers are a rich source of keratin and could be used as a feather meal in the feed industry if the keratin is degraded using suitable micro-organisms.2. In this study, keratin-degrading micro-organisms were isolated from a poultry farm. The predominant organisms were identified as Bacillus subtilis, Aspergillus flavus, A. fumigatus and Trychophyton sp. 3. The isolates were inoculated into feather medium and observed for keratin degradation by measuring the protein content, free amino acids and change in pH. 4. During feather degradation by B. subtilis, the concentration of soluble protein released to the medium increased gradually and reached the maximum (433 µg/ml) during d 7 of incubation and the pH increased from the initial 6.9 to 8.4 on d 9 of incubation. Similarly, the maximum protein content of 414 µg/ml and pH of 8.5 was observed for A. fumigatus on d 21 of incubation. 5. B. subtilis and A. fumigatus showed almost the same level of keratinase activity.
AB - Abstract: 1. Poultry processing generates a large quantity of feather waste. Feathers are a rich source of keratin and could be used as a feather meal in the feed industry if the keratin is degraded using suitable micro-organisms.2. In this study, keratin-degrading micro-organisms were isolated from a poultry farm. The predominant organisms were identified as Bacillus subtilis, Aspergillus flavus, A. fumigatus and Trychophyton sp. 3. The isolates were inoculated into feather medium and observed for keratin degradation by measuring the protein content, free amino acids and change in pH. 4. During feather degradation by B. subtilis, the concentration of soluble protein released to the medium increased gradually and reached the maximum (433 µg/ml) during d 7 of incubation and the pH increased from the initial 6.9 to 8.4 on d 9 of incubation. Similarly, the maximum protein content of 414 µg/ml and pH of 8.5 was observed for A. fumigatus on d 21 of incubation. 5. B. subtilis and A. fumigatus showed almost the same level of keratinase activity.
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U2 - 10.1080/00071668.2014.996119
DO - 10.1080/00071668.2014.996119
M3 - Article
VL - 56
SP - 210
EP - 217
JO - British Poultry Science
JF - British Poultry Science
SN - 0007-1668
IS - 2
ER -