Processing poultry feathers into keratin hydrolysate through alkaline-enzymatic hydrolysis

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/70883521:28110/11:43865345

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Processing poultry feathers into keratin hydrolysate through alkaline-enzymatic hydrolysis

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Processing poultry feathers into keratin hydrolysate through alkaline-enzymatic hydrolysis

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EI - Biotechnologie a bionika

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Waste Management and Research

ISSN

0734-242X

e-ISSN

—

Svazek periodika

29

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

260-267

Kód UT WoS článku

000287917900004

EID výsledku v databázi Scopus

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