Lipolytic activity in free and immobilized cells of Phoma glomerata
- Autores
- Pollero, Ricardo José; Gaspar, María Laura; Cabello, Marta Noemí
- Año de publicación
- 1997
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The lipolytic activity of free and immobilized whole cells of the pathogenic fungus Phoma glomerata was demonstrated, and several properties of the lipase involved were determined. Free fungal cells and small pieces of immobilized cells, prepared by spontaneous colonization on a solid surface or entrapped in calcium alginate, were incubated with triolein in buffered medium. Different incubation conditions were assayed to optimize the reaction, to determine the effects of heating and time on stability of the immobilized preparations and the time course of the reactions. Although the enzyme cleaves all ester bonds of triolein, it shows some preference for the outer bonds. An optimal pH of 7.5–8.0, optimal temperature of 45°C for free and 50°C for immobilized cell preparations, the necessity for substrate emulsifiers, and reaction independence from calcium and magnesium were demonstrated. Results suggest that immobilized whole cells of P. glomerata would be a suitable tool to study its lipid physiology and to explore further the possible biotechnological use of its lipase activity.
Instituto de Investigaciones Bioquímicas de La Plata - Materia
-
Ciencias Médicas
Química
Fungal lipase
immobilized cells
lipase
lipids
lipolytic activity
microbial enzyme
Phoma
triacylglycerol hydrolysis
triolein degradation
whole cells - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/140856
Ver los metadatos del registro completo
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Lipolytic activity in free and immobilized cells of Phoma glomerataPollero, Ricardo JoséGaspar, María LauraCabello, Marta NoemíCiencias MédicasQuímicaFungal lipaseimmobilized cellslipaselipidslipolytic activitymicrobial enzymePhomatriacylglycerol hydrolysistriolein degradationwhole cellsThe lipolytic activity of free and immobilized whole cells of the pathogenic fungus Phoma glomerata was demonstrated, and several properties of the lipase involved were determined. Free fungal cells and small pieces of immobilized cells, prepared by spontaneous colonization on a solid surface or entrapped in calcium alginate, were incubated with triolein in buffered medium. Different incubation conditions were assayed to optimize the reaction, to determine the effects of heating and time on stability of the immobilized preparations and the time course of the reactions. Although the enzyme cleaves all ester bonds of triolein, it shows some preference for the outer bonds. An optimal pH of 7.5–8.0, optimal temperature of 45°C for free and 50°C for immobilized cell preparations, the necessity for substrate emulsifiers, and reaction independence from calcium and magnesium were demonstrated. Results suggest that immobilized whole cells of P. glomerata would be a suitable tool to study its lipid physiology and to explore further the possible biotechnological use of its lipase activity.Instituto de Investigaciones Bioquímicas de La Plata1997-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf451-454http://sedici.unlp.edu.ar/handle/10915/140856enginfo:eu-repo/semantics/altIdentifier/issn/0003-021xinfo:eu-repo/semantics/altIdentifier/issn/1558-9331info:eu-repo/semantics/altIdentifier/doi/10.1007/s11746-997-0105-1info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:07Zoai:sedici.unlp.edu.ar:10915/140856Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:08.282SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Lipolytic activity in free and immobilized cells of Phoma glomerata |
title |
Lipolytic activity in free and immobilized cells of Phoma glomerata |
spellingShingle |
Lipolytic activity in free and immobilized cells of Phoma glomerata Pollero, Ricardo José Ciencias Médicas Química Fungal lipase immobilized cells lipase lipids lipolytic activity microbial enzyme Phoma triacylglycerol hydrolysis triolein degradation whole cells |
title_short |
Lipolytic activity in free and immobilized cells of Phoma glomerata |
title_full |
Lipolytic activity in free and immobilized cells of Phoma glomerata |
title_fullStr |
Lipolytic activity in free and immobilized cells of Phoma glomerata |
title_full_unstemmed |
Lipolytic activity in free and immobilized cells of Phoma glomerata |
title_sort |
Lipolytic activity in free and immobilized cells of Phoma glomerata |
dc.creator.none.fl_str_mv |
Pollero, Ricardo José Gaspar, María Laura Cabello, Marta Noemí |
author |
Pollero, Ricardo José |
author_facet |
Pollero, Ricardo José Gaspar, María Laura Cabello, Marta Noemí |
author_role |
author |
author2 |
Gaspar, María Laura Cabello, Marta Noemí |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Ciencias Médicas Química Fungal lipase immobilized cells lipase lipids lipolytic activity microbial enzyme Phoma triacylglycerol hydrolysis triolein degradation whole cells |
topic |
Ciencias Médicas Química Fungal lipase immobilized cells lipase lipids lipolytic activity microbial enzyme Phoma triacylglycerol hydrolysis triolein degradation whole cells |
dc.description.none.fl_txt_mv |
The lipolytic activity of free and immobilized whole cells of the pathogenic fungus Phoma glomerata was demonstrated, and several properties of the lipase involved were determined. Free fungal cells and small pieces of immobilized cells, prepared by spontaneous colonization on a solid surface or entrapped in calcium alginate, were incubated with triolein in buffered medium. Different incubation conditions were assayed to optimize the reaction, to determine the effects of heating and time on stability of the immobilized preparations and the time course of the reactions. Although the enzyme cleaves all ester bonds of triolein, it shows some preference for the outer bonds. An optimal pH of 7.5–8.0, optimal temperature of 45°C for free and 50°C for immobilized cell preparations, the necessity for substrate emulsifiers, and reaction independence from calcium and magnesium were demonstrated. Results suggest that immobilized whole cells of P. glomerata would be a suitable tool to study its lipid physiology and to explore further the possible biotechnological use of its lipase activity. Instituto de Investigaciones Bioquímicas de La Plata |
description |
The lipolytic activity of free and immobilized whole cells of the pathogenic fungus Phoma glomerata was demonstrated, and several properties of the lipase involved were determined. Free fungal cells and small pieces of immobilized cells, prepared by spontaneous colonization on a solid surface or entrapped in calcium alginate, were incubated with triolein in buffered medium. Different incubation conditions were assayed to optimize the reaction, to determine the effects of heating and time on stability of the immobilized preparations and the time course of the reactions. Although the enzyme cleaves all ester bonds of triolein, it shows some preference for the outer bonds. An optimal pH of 7.5–8.0, optimal temperature of 45°C for free and 50°C for immobilized cell preparations, the necessity for substrate emulsifiers, and reaction independence from calcium and magnesium were demonstrated. Results suggest that immobilized whole cells of P. glomerata would be a suitable tool to study its lipid physiology and to explore further the possible biotechnological use of its lipase activity. |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-04-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/140856 |
url |
http://sedici.unlp.edu.ar/handle/10915/140856 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0003-021x info:eu-repo/semantics/altIdentifier/issn/1558-9331 info:eu-repo/semantics/altIdentifier/doi/10.1007/s11746-997-0105-1 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
dc.format.none.fl_str_mv |
application/pdf 451-454 |
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reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
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13.070432 |