Processing poultry feathers into keratin hydrolysate through alkaline-enzymatic hydrolysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F11%3A43865345" target="_blank" >RIV/70883521:28140/11:43865345 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28110/11:43865345
Result on the web
<a href="http://dx.doi.org/10.1177/0734242X10370378" target="_blank" >http://dx.doi.org/10.1177/0734242X10370378</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1177/0734242X10370378" target="_blank" >10.1177/0734242X10370378</a>

Result language
angličtina
Original language name
Processing poultry feathers into keratin hydrolysate through alkaline-enzymatic hydrolysis
Original language description
Poultry feathers make up for as much as 8.5% of chicken weight and represent a considerable amount of almost pure keratin waste which is not being adequately utilized at the present time. The present study dealt with the processing of poultry feathers through a two-stage alkaline-enzymatic hydrolysis. In the first stage, feathers were mixed with a 0.1 or 0.3% KOH water solution in a 1 : 50 ratio and were incubated at 70°C for 24 h. After adjusting pH to 9, the effects examined in the second processing stage on the amount of degraded feathers were those of proteolytic enzyme additions (1-5%), time (4-8 h) and temperature (50-70°C). Processing feathers in 0.3% KOH and hydrolysing for 8 h in the second stage at 70°C with a 5% dose of enzyme (relative to dry feathers weight) produced approx. 91% degradation.Keratin hydrolysate is distinct for its high nitrogen content and reasonable inorganic solids level.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EI - Biotechnology and bionics
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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