Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathers

The strain Chryseobacterium sp. kr6 shown to be useful for biotechnological purposes such as hydrolysis of poultry feathers and de-hairing of bovine pelts. The effect of temperature, initial pH and media composition on protease production by this keratinolytic strain was studied. The enzyme was prod...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Brandelli,Adriano, Riffel,Alessandro
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2005
Materias:	bacteria enzyme keratin protease
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000100007
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-34582005000100007
record_format	dspace
spelling	oai:scielo:S0717-345820050001000072005-08-17Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathersBrandelli,AdrianoRiffel,Alessandro bacteria enzyme keratin protease The strain Chryseobacterium sp. kr6 shown to be useful for biotechnological purposes such as hydrolysis of poultry feathers and de-hairing of bovine pelts. The effect of temperature, initial pH and media composition on protease production by this keratinolytic strain was studied. The enzyme was produced between 25 and 37ºC, with maximum activity and yield at 30ºC. When protease production was tested in media with different initial pH, maximum activity was observed when cultivation was carried out at 30ºC and initial pH ranging from 6.0 to 8.0. Higher activity was observed when feathers or feather meal were used as growth substrates, followed by soybean meal. The addition of carbohydrates or surfactants to feather broth resulted in decrease in keratinolytic activity.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.8 n.1 20052005-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000100007en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	bacteria enzyme keratin protease
spellingShingle	bacteria enzyme keratin protease Brandelli,Adriano Riffel,Alessandro Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathers
description	The strain Chryseobacterium sp. kr6 shown to be useful for biotechnological purposes such as hydrolysis of poultry feathers and de-hairing of bovine pelts. The effect of temperature, initial pH and media composition on protease production by this keratinolytic strain was studied. The enzyme was produced between 25 and 37ºC, with maximum activity and yield at 30ºC. When protease production was tested in media with different initial pH, maximum activity was observed when cultivation was carried out at 30ºC and initial pH ranging from 6.0 to 8.0. Higher activity was observed when feathers or feather meal were used as growth substrates, followed by soybean meal. The addition of carbohydrates or surfactants to feather broth resulted in decrease in keratinolytic activity.
author	Brandelli,Adriano Riffel,Alessandro
author_facet	Brandelli,Adriano Riffel,Alessandro
author_sort	Brandelli,Adriano
title	Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathers
title_short	Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathers
title_full	Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathers
title_fullStr	Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathers
title_full_unstemmed	Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathers
title_sort	production of an extracellular keratinase from chryseobacterium sp. growing on raw feathers
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000100007
work_keys_str_mv	AT brandelliadriano productionofanextracellularkeratinasefromchryseobacteriumspgrowingonrawfeathers AT riffelalessandro productionofanextracellularkeratinasefromchryseobacteriumspgrowingonrawfeathers
_version_	1718441730088370176

Production of an extracellular keratinase from Chryseobacterium sp. growing on raw feathers

Ejemplares similares