Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts

Autores
Galarza, Betina Claudia; Garro, María Laura; Greco, Carlos A.; Hours, Roque Alberto
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The aim of enzymatic unhairing is to allow the separation of the outer sheath of hair root from the dermal connective tissue. This is considered an ecofriendly process. It?s not expensive since if the enzymes are applied on the epidermis thereby surface extracts could be saved. The purpose of this work was to analyze the changes in pilosebaceus unit and basal lamina by unhairing enzyme action. Various keratinolytic fungi, previously isolated and selected from different soil samples were used: Neurospora crassa, Verticillum albo-atrum, Trichophyton ajelloi, Chrysosporium sp, Aspergillus sydowii, Paecilomyces lilacinus and Acremonium murorum. Fungal isolates were cultivated in solid state conditions using hair waste obtained from the hair-saving unhairing process as substrate. Enzyme extracts were characterized according to their keratinolytic-proteolytic activity and protein content. Bovine skins were placed in plastic plates where the epidermis contacted with different solutions: fungal enzyme extracts with commercial tensioactives (0.1%, 0.5%), biocide 0.2% w/w (wet skin) for 4 h (soaking) and 24 h (unhairing) at 25°C and 40 rpm. Samples of skin with and without enzymatic treatment were fixed in 4% formaldehyde, dried on increasing concentration of ethanol and analyzed with scanning electron microscopy. It was observed that the enzymes altered the epidermis, caused detachment of corneocytes and the emptying of hair follicles. Characteristic patterns of hair cuticle and collagen fibres were preserved in skin control with buffer. Trichophyton ajelloi caused the strongest depilatory effect . It was concluded that the enzyme penetration through epidermis could be employed for the application of reagents during the handcrafted tanning of leather.
Fil: Galarza, Betina Claudia. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; Argentina
Fil: Garro, María Laura. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; Argentina
Fil: Greco, Carlos A.. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; Argentina
Fil: Hours, Roque Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Fermentaciones Industriales. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Fermentaciones Industriales; Argentina
Materia
UNHAIRING
KERATINOLYTIC FUNGAL ENZYMES
PERMEABILITY
EPIDERMIS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/122652

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network_name_str CONICET Digital (CONICET)
spelling Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extractsGalarza, Betina ClaudiaGarro, María LauraGreco, Carlos A.Hours, Roque AlbertoUNHAIRINGKERATINOLYTIC FUNGAL ENZYMESPERMEABILITYEPIDERMIShttps://purl.org/becyt/ford/2.9https://purl.org/becyt/ford/2The aim of enzymatic unhairing is to allow the separation of the outer sheath of hair root from the dermal connective tissue. This is considered an ecofriendly process. It?s not expensive since if the enzymes are applied on the epidermis thereby surface extracts could be saved. The purpose of this work was to analyze the changes in pilosebaceus unit and basal lamina by unhairing enzyme action. Various keratinolytic fungi, previously isolated and selected from different soil samples were used: Neurospora crassa, Verticillum albo-atrum, Trichophyton ajelloi, Chrysosporium sp, Aspergillus sydowii, Paecilomyces lilacinus and Acremonium murorum. Fungal isolates were cultivated in solid state conditions using hair waste obtained from the hair-saving unhairing process as substrate. Enzyme extracts were characterized according to their keratinolytic-proteolytic activity and protein content. Bovine skins were placed in plastic plates where the epidermis contacted with different solutions: fungal enzyme extracts with commercial tensioactives (0.1%, 0.5%), biocide 0.2% w/w (wet skin) for 4 h (soaking) and 24 h (unhairing) at 25°C and 40 rpm. Samples of skin with and without enzymatic treatment were fixed in 4% formaldehyde, dried on increasing concentration of ethanol and analyzed with scanning electron microscopy. It was observed that the enzymes altered the epidermis, caused detachment of corneocytes and the emptying of hair follicles. Characteristic patterns of hair cuticle and collagen fibres were preserved in skin control with buffer. Trichophyton ajelloi caused the strongest depilatory effect . It was concluded that the enzyme penetration through epidermis could be employed for the application of reagents during the handcrafted tanning of leather.Fil: Galarza, Betina Claudia. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; ArgentinaFil: Garro, María Laura. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; ArgentinaFil: Greco, Carlos A.. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; ArgentinaFil: Hours, Roque Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Fermentaciones Industriales. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Fermentaciones Industriales; ArgentinaAsociación Química Española de la Industria del Cuero2019-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/122652Galarza, Betina Claudia; Garro, María Laura; Greco, Carlos A.; Hours, Roque Alberto; Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts; Asociación Química Española de la Industria del Cuero; Journal of AQEIC; 70; 1; 7-2019; 15-212014-8011CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.aqeic.org/web/journal/esp/index.phpinfo:eu-repo/semantics/altIdentifier/url/https://dialnet.unirioja.es/servlet/articulo?codigo=7058914info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:30:50Zoai:ri.conicet.gov.ar:11336/122652instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:30:51.245CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts
title Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts
spellingShingle Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts
Galarza, Betina Claudia
UNHAIRING
KERATINOLYTIC FUNGAL ENZYMES
PERMEABILITY
EPIDERMIS
title_short Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts
title_full Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts
title_fullStr Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts
title_full_unstemmed Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts
title_sort Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts
dc.creator.none.fl_str_mv Galarza, Betina Claudia
Garro, María Laura
Greco, Carlos A.
Hours, Roque Alberto
author Galarza, Betina Claudia
author_facet Galarza, Betina Claudia
Garro, María Laura
Greco, Carlos A.
Hours, Roque Alberto
author_role author
author2 Garro, María Laura
Greco, Carlos A.
Hours, Roque Alberto
author2_role author
author
author
dc.subject.none.fl_str_mv UNHAIRING
KERATINOLYTIC FUNGAL ENZYMES
PERMEABILITY
EPIDERMIS
topic UNHAIRING
KERATINOLYTIC FUNGAL ENZYMES
PERMEABILITY
EPIDERMIS
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.9
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The aim of enzymatic unhairing is to allow the separation of the outer sheath of hair root from the dermal connective tissue. This is considered an ecofriendly process. It?s not expensive since if the enzymes are applied on the epidermis thereby surface extracts could be saved. The purpose of this work was to analyze the changes in pilosebaceus unit and basal lamina by unhairing enzyme action. Various keratinolytic fungi, previously isolated and selected from different soil samples were used: Neurospora crassa, Verticillum albo-atrum, Trichophyton ajelloi, Chrysosporium sp, Aspergillus sydowii, Paecilomyces lilacinus and Acremonium murorum. Fungal isolates were cultivated in solid state conditions using hair waste obtained from the hair-saving unhairing process as substrate. Enzyme extracts were characterized according to their keratinolytic-proteolytic activity and protein content. Bovine skins were placed in plastic plates where the epidermis contacted with different solutions: fungal enzyme extracts with commercial tensioactives (0.1%, 0.5%), biocide 0.2% w/w (wet skin) for 4 h (soaking) and 24 h (unhairing) at 25°C and 40 rpm. Samples of skin with and without enzymatic treatment were fixed in 4% formaldehyde, dried on increasing concentration of ethanol and analyzed with scanning electron microscopy. It was observed that the enzymes altered the epidermis, caused detachment of corneocytes and the emptying of hair follicles. Characteristic patterns of hair cuticle and collagen fibres were preserved in skin control with buffer. Trichophyton ajelloi caused the strongest depilatory effect . It was concluded that the enzyme penetration through epidermis could be employed for the application of reagents during the handcrafted tanning of leather.
Fil: Galarza, Betina Claudia. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; Argentina
Fil: Garro, María Laura. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; Argentina
Fil: Greco, Carlos A.. Instituto Nacional de Tecnología Industrial. Centro de Investigación y Desarrollo del Cuero. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Centíficas. Centro de Investigación y Desarrollo del Cuero; Argentina
Fil: Hours, Roque Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Fermentaciones Industriales. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Fermentaciones Industriales; Argentina
description The aim of enzymatic unhairing is to allow the separation of the outer sheath of hair root from the dermal connective tissue. This is considered an ecofriendly process. It?s not expensive since if the enzymes are applied on the epidermis thereby surface extracts could be saved. The purpose of this work was to analyze the changes in pilosebaceus unit and basal lamina by unhairing enzyme action. Various keratinolytic fungi, previously isolated and selected from different soil samples were used: Neurospora crassa, Verticillum albo-atrum, Trichophyton ajelloi, Chrysosporium sp, Aspergillus sydowii, Paecilomyces lilacinus and Acremonium murorum. Fungal isolates were cultivated in solid state conditions using hair waste obtained from the hair-saving unhairing process as substrate. Enzyme extracts were characterized according to their keratinolytic-proteolytic activity and protein content. Bovine skins were placed in plastic plates where the epidermis contacted with different solutions: fungal enzyme extracts with commercial tensioactives (0.1%, 0.5%), biocide 0.2% w/w (wet skin) for 4 h (soaking) and 24 h (unhairing) at 25°C and 40 rpm. Samples of skin with and without enzymatic treatment were fixed in 4% formaldehyde, dried on increasing concentration of ethanol and analyzed with scanning electron microscopy. It was observed that the enzymes altered the epidermis, caused detachment of corneocytes and the emptying of hair follicles. Characteristic patterns of hair cuticle and collagen fibres were preserved in skin control with buffer. Trichophyton ajelloi caused the strongest depilatory effect . It was concluded that the enzyme penetration through epidermis could be employed for the application of reagents during the handcrafted tanning of leather.
publishDate 2019
dc.date.none.fl_str_mv 2019-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/122652
Galarza, Betina Claudia; Garro, María Laura; Greco, Carlos A.; Hours, Roque Alberto; Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts; Asociación Química Española de la Industria del Cuero; Journal of AQEIC; 70; 1; 7-2019; 15-21
2014-8011
CONICET Digital
CONICET
url http://hdl.handle.net/11336/122652
identifier_str_mv Galarza, Betina Claudia; Garro, María Laura; Greco, Carlos A.; Hours, Roque Alberto; Enzymatic unhairing: Permeability assay of bovine skin epidermis with fungal enzyme extracts; Asociación Química Española de la Industria del Cuero; Journal of AQEIC; 70; 1; 7-2019; 15-21
2014-8011
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/url/https://dialnet.unirioja.es/servlet/articulo?codigo=7058914
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Asociación Química Española de la Industria del Cuero
publisher.none.fl_str_mv Asociación Química Española de la Industria del Cuero
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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