About: Characterization of keratin hydrolyzates prepared from sheep wool

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Description	Preparation of keratin hydrolyzates through alkaline-enzymatic hydrolysis was already described earlier. Employment of hydrolyzates in practice requires knowledge of their composition, thermal stability and molecular weight. The aim of this contribution is to determine molecular weight of keratin hydrolyzates (prepared from sheep wool). Molecular weight (Mw) of keratin hydrolyzates was determined by SDS-PAGE (sodium dodecyl sulphate polyacrylamide gel electrophoresis). Selection of hydrolysis conditions allows to prepare hydrolyzates with predominant share of low-molecular fractions, intermediate-molecular fractions or high-molecular fractions. Optimal conditions for preparing keratin hydrolyzates are as follows: in 1ststage of hydrolysis, acting on wool with 0.6% KOH at 90 °C for 48 h; in 2ndstage of hydrolysis, adding 1% (w/w) proteolytic enzyme Savinase 6 T and stirring at 40°C for 24 h. Under these conditions, breakdown efficiency is 63% and a hydrolyzate is prepared containing 11.5% N, 14.9% ash, 2.58% sulphur and a high portion of intermediate- and high-molecular fractions which is comparable in quality to technical gelatine. Keratin hydrolyzate can be employed, for example, to produce wrapping materials (films, coatings, encapsulates). Preparation of keratin hydrolyzates through alkaline-enzymatic hydrolysis was already described earlier. Employment of hydrolyzates in practice requires knowledge of their composition, thermal stability and molecular weight. The aim of this contribution is to determine molecular weight of keratin hydrolyzates (prepared from sheep wool). Molecular weight (Mw) of keratin hydrolyzates was determined by SDS-PAGE (sodium dodecyl sulphate polyacrylamide gel electrophoresis). Selection of hydrolysis conditions allows to prepare hydrolyzates with predominant share of low-molecular fractions, intermediate-molecular fractions or high-molecular fractions. Optimal conditions for preparing keratin hydrolyzates are as follows: in 1ststage of hydrolysis, acting on wool with 0.6% KOH at 90 °C for 48 h; in 2ndstage of hydrolysis, adding 1% (w/w) proteolytic enzyme Savinase 6 T and stirring at 40°C for 24 h. Under these conditions, breakdown efficiency is 63% and a hydrolyzate is prepared containing 11.5% N, 14.9% ash, 2.58% sulphur and a high portion of intermediate- and high-molecular fractions which is comparable in quality to technical gelatine. Keratin hydrolyzate can be employed, for example, to produce wrapping materials (films, coatings, encapsulates). (en)
Title	Characterization of keratin hydrolyzates prepared from sheep wool Characterization of keratin hydrolyzates prepared from sheep wool (en)
skos:prefLabel	Characterization of keratin hydrolyzates prepared from sheep wool Characterization of keratin hydrolyzates prepared from sheep wool (en)
skos:notation	RIV/70883521:28610/14:43871809!RIV15-MSM-28610___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED2.1.00/03.0111)
http://linked.open...iv/cisloPeriodika	19
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Mokrejš, Pavel Svoboda, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Tomáše Bati ve Zlíně / Univerzitní institut
http://linked.open...dnocenehoVysledku	6949
http://linked.open...ai/riv/idVysledku	RIV/70883521:28610/14:43871809
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Sheep wool; Molecular weight; Keratin; Hydrolyzate; Hydrolysis (en)
http://linked.open.../riv/klicoveSlovo	Sheep wool Hydrolysis Keratin Molecular weight Hydrolyzate
http://linked.open...odStatuVydavatele	IN - Indická republika
http://linked.open...ontrolniKodProRIV	[6932929E0E9B]
http://linked.open...i/riv/nazevZdroje	Asian Journal of Chemistry
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Polymer Systems
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	26
http://linked.open...iv/tvurceVysledku	Mokrejš, Pavel Svoboda, Petr Krejčí, Ondřej Sukop, Svatopluk
issn	0970-7077
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.14233/ajchem.2014.16480
http://localhost/t...ganizacniJednotka	28610

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