Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/320471
Type: Artigo de Periódico
Title: Biochemical Characterization Of Solvent, Salt, Surfactant And Oxidizing Agent Tolerant Proteases From Aspergillus Niger Produced In Different Agroindustrial Wastes
Author: de Castro
RJS; Soares
MH; Albernaz
JRM; Sato
HH
Abstract: Proteases produced by Aspergillus niger LBA 02 under solid state fermentation using different agroindustrial wastes had their enzyme activities tested in the presence of organic solvents, NaCI, surfactants and oxidizing agents. The results showed that according to the fermentation substrate, the microorganism was able to secrete proteases with different biochemical characteristics. When wheat bran was used as the substrate, the proteases showed the highest relative activity in 50% (v/v) petroleum ether, reaching 114.3%, while the proteases produced in soybean meal and cottonseed meal presented 94.7% and 106.1%, respectively. These enzymes also presented high relative activity values in 50% (v/v) chloroform, retaining up to 85% of their initial protease activities after 3 h at 37 degrees C. When surfactants and oxidizing agents were tested, the proteases produced in soybean meal proved to have remarkable and the highest activity followed by the proteases produced in wheat bran and cottonseed meal. Since the protease produced in wheat bran showed considerable tolerance at high concentrations of NaCI, with relative activity of 61.1% at 15% NaCI (w/v), while the proteases produced in soybean meal and cottonseed meal retained 48.7% and 46.3% of their initial activities, respectively. This work provides an interesting approach about the modulation of biochemical properties of enzymes in response to different substrates, what can be used for obtaining proteases with specific applications. (C) 2015 Elsevier Ltd. All rights reserved.
Subject: Protease
Biochemical Properties
Agroindustrial Wastes
Chemical Agents
Salt-tolerant
Editor: ELSEVIER SCIENCE BV
Citation: Biocatalysis And Agricultural Biotechnology. ELSEVIER SCIENCE BV, n. 5, p. 94 - 98.
Rights: fechado
Identifier DOI: 10.1016/j.bcab.2015.12.011
Address: http://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S1878818115300311
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
000371892900013.pdf1.79 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.