a rapid screening method for cutinase producing microorganisms seleção de microorganismos produtores de cutinase

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ID: 151254
2005
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Abstract
Both cutinase and lipase belong to the esterase group of enzymes (EC 3.1.1.X), which are capable of catalyzing the hydrolysis of ester bonds. Cutinase catalyzes the hydrolysis of cutin, an insoluble biopolyester which is the structural component of plant cuticles. As cutinase is an efficient catalyst in watery or organic media, it is potentially appropriate for the detergent, food and cosmetic industries. The objective of this work was to isolate microorganisms from plants and perform a pre-selection of molds showing esterase producing ability. The selected strains were then submitted to fermentation in media containing cutin. The lipolytic and cutinolytic activities of the supernatant were determined in order to differentiate lipase producers from cutinase-producing strains. The mold strain selected as the best cutinase producer was identified as being Fusarium oxysporium.
A cutinase pertence, como as lípases, ao grupo das esterases (EC 3.1.1.X), que são enzimas capazes de catalisar reações de hidrólise de ligações do tipo éster. A cutinase catalisa a hidrólise da cutina, um biopoliéster insolúvel que constitui o componente estrutural da cutícula das plantas. Esta enzima tem se mostrado um eficiente catalisador tanto em solução aquosa quanto em meios orgânicos, sendo potencialmente apropriada para usos em indústria de detergentes, alimentos e cosméticos. O objetivo deste trabalho foi isolar fungos de diversas fontes e realizar uma pré-seleção destes, quanto à habilidade em produzir esterase. As linhagens fúngicas pré-selecionadas como produtoras de esterase foram inoculadas em meio de cultivo contendo cutina extraída de maçã. As atividades cutinolítica e lipolítica foram medidas no sobrenadante das culturas a fim de diferenciar os microrganismos produtores de lipase dos produtores de cutinase. Uma linhagem isolada mostrou a maior atividade cutinolítica após 12 dias de fermentação em um meio contendo 1% de cutina e foi identificada como sendo o Fusarium oxysporium.
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macedo2005braziliana Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Gabriela Alves Macedo;Tatiana Fontes Pio
Journal ieee software
Year 2005
DOI
10.1590/S1517-83822005000400016
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000400016
Keywords
esterases esterase

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