Avaliação de métodos de lise celular de sporobolomyces ruberrimus
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório do Centro Universitário Braz Cubas |
Texto Completo: | https://repositorio.cruzeirodosul.edu.br/handle/123456789/2577 |
Resumo: | Carotenoids are important biomolecules of economic interest due to biological properties that show. They can be synthesized by plants and microorganisms, among which stand out the red yeast. The recovery process of these intracellular pigments involves a crucial stage of cell lysis. Thus, the present study aimed to evaluate different methods of yeast cell lysis (Sporobolomyces ruberrimus) in order to optimize the recovery of intracellular pigments. The first stage of the research, conducted through a 23 factorial design with central point sought to evaluate which of the parameters investigated (cell concentration, gradient of lysing agent and stirring speed) affect, more significantly, the amount of total carotenoids recovered. The initial study indicated that the research should be performed with a fixed cell concentration. So, from these results, it was defined cell concentration of 500 mg / L and the new 22 factorial design with central point was set. The independent variables applying vortex + lysing agents were optimized for the conditions studied in 135 mg of glass beads and 1230 rpm stirring speed to vortex + glass beads method. Already the chemical method 'classic' (dimethylsulfoxide) considered by the literature presented as significant independent variable only the concentration of lysing agent whose optimum value found was 2,7 mL DMSO. The same planning and conditions were applied on the use of planetary mill, where the efficiency of the process is independent of any of the parameters evaluated, enabling the use of milder processing conditions (135 mg extracting agent and 200 rpm of stirring speed). As for the cell lysis, direct microscopic analysis indicated that mechanical methods for cell lysis studied were more efficient in the laceration of the cells and that the extraction of intracellular carotenoids employing the chemical method with DMSO possibly occurs just by cell permeabilization. |
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Avaliação de métodos de lise celular de sporobolomyces ruberrimusCarotenoidesLevedurasLise celularSolventes - BioltecnologiasCNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERALCarotenoids are important biomolecules of economic interest due to biological properties that show. They can be synthesized by plants and microorganisms, among which stand out the red yeast. The recovery process of these intracellular pigments involves a crucial stage of cell lysis. Thus, the present study aimed to evaluate different methods of yeast cell lysis (Sporobolomyces ruberrimus) in order to optimize the recovery of intracellular pigments. The first stage of the research, conducted through a 23 factorial design with central point sought to evaluate which of the parameters investigated (cell concentration, gradient of lysing agent and stirring speed) affect, more significantly, the amount of total carotenoids recovered. The initial study indicated that the research should be performed with a fixed cell concentration. So, from these results, it was defined cell concentration of 500 mg / L and the new 22 factorial design with central point was set. The independent variables applying vortex + lysing agents were optimized for the conditions studied in 135 mg of glass beads and 1230 rpm stirring speed to vortex + glass beads method. Already the chemical method 'classic' (dimethylsulfoxide) considered by the literature presented as significant independent variable only the concentration of lysing agent whose optimum value found was 2,7 mL DMSO. The same planning and conditions were applied on the use of planetary mill, where the efficiency of the process is independent of any of the parameters evaluated, enabling the use of milder processing conditions (135 mg extracting agent and 200 rpm of stirring speed). As for the cell lysis, direct microscopic analysis indicated that mechanical methods for cell lysis studied were more efficient in the laceration of the cells and that the extraction of intracellular carotenoids employing the chemical method with DMSO possibly occurs just by cell permeabilization.Os carotenoides são biomoléculas de relevante interesse econômico devido às propriedades biológicas que apresentam. Podem ser sintetizadas por plantas e microrganismos, dentre os quais, se destacam as leveduras vermelhas. O processo de recuperação destes pigmentos intracelulares envolve uma etapa crucial de lise celular. Assim, o presente estudo visou avaliar diferentes métodos de lise celular da levedura Sporobolomyces ruberrimus a fim de otimizar a recuperação de pigmentos intracelulares. A primeira etapa da pesquisa, realizada através de um planejamento fatorial 23 com ponto central visou avaliar qual ou quais dos parâmetros investigados (concentração celular, gradiente de agente de lise e velocidade de agitação) afetariam, de forma mais significativa a quantidade de carotenoides totais recuperados. O estudo inicial indicou que a pesquisa deveria ser realizada com uma concentração celular fixa. Então foi determinada a concentração celular de 500 mg/L e o novo planejamento fatorial 22 com ponto central foi definido. As variáveis independentes avaliadas aplicando-se vórtex + agentes de lise foram otimizadas para as condições estudadas em 135 mg de pérolas vidro e 1230 rpm de velocidade de agitação para o método vórtex + pérolas de vidro. Já o método químico ‘clássico’ (dimetilsulfóxido) considerado pela literatura apresentou como variável independente significativa somente a concentração de agente de lise, cujo valor otimizado encontrado foi de 2,7 mL de DMSO. O mesmo planejamento e condições foram aplicados na utilização do equipamento ‘planetary mill’, sendo que a eficiência do processo independe de qualquer um dos parâmetros avaliados, permitindo a utilização de condições brandas de processamento (135 mg de agente de lise e 200 rpm de velocidade de agitação). Quanto à lise celular, as análises microscópicas diretas indicaram que os métodos mecânicos de lise celular estudados mostraram-se mais eficientes no sentido da dilaceração das células e que a extração celular de carotenoides empregando-se o método químico com DMSO ocorre, possivelmente, apenas através da permeabilização celular.Universidade PositivoBrasilPós-GraduaçãoPrograma de Pós-Graduação em Biotecnologia IndustrialUPCardoso, Lígia Alves da Costahttp://lattes.cnpq.br/5655205350391160Pennacchi, Mariana Gomes Clemente2021-08-16T20:13:11Z20142021-08-16T20:13:11Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttps://repositorio.cruzeirodosul.edu.br/handle/123456789/2577porinfo:eu-repo/semantics/openAccessreponame:Repositório do Centro Universitário Braz Cubasinstname:Centro Universitário Braz Cubas (CUB)instacron:CUB2021-08-23T16:57:29Zoai:repositorio.cruzeirodosul.edu.br:123456789/2577Repositório InstitucionalPUBhttps://repositorio.brazcubas.edu.br/oai/requestbibli@brazcubas.edu.bropendoar:2021-08-23T16:57:29Repositório do Centro Universitário Braz Cubas - Centro Universitário Braz Cubas (CUB)false |
dc.title.none.fl_str_mv |
Avaliação de métodos de lise celular de sporobolomyces ruberrimus |
title |
Avaliação de métodos de lise celular de sporobolomyces ruberrimus |
spellingShingle |
Avaliação de métodos de lise celular de sporobolomyces ruberrimus Pennacchi, Mariana Gomes Clemente Carotenoides Leveduras Lise celular Solventes - Bioltecnologias CNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
title_short |
Avaliação de métodos de lise celular de sporobolomyces ruberrimus |
title_full |
Avaliação de métodos de lise celular de sporobolomyces ruberrimus |
title_fullStr |
Avaliação de métodos de lise celular de sporobolomyces ruberrimus |
title_full_unstemmed |
Avaliação de métodos de lise celular de sporobolomyces ruberrimus |
title_sort |
Avaliação de métodos de lise celular de sporobolomyces ruberrimus |
author |
Pennacchi, Mariana Gomes Clemente |
author_facet |
Pennacchi, Mariana Gomes Clemente |
author_role |
author |
dc.contributor.none.fl_str_mv |
Cardoso, Lígia Alves da Costa http://lattes.cnpq.br/5655205350391160 |
dc.contributor.author.fl_str_mv |
Pennacchi, Mariana Gomes Clemente |
dc.subject.por.fl_str_mv |
Carotenoides Leveduras Lise celular Solventes - Bioltecnologias CNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
topic |
Carotenoides Leveduras Lise celular Solventes - Bioltecnologias CNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
description |
Carotenoids are important biomolecules of economic interest due to biological properties that show. They can be synthesized by plants and microorganisms, among which stand out the red yeast. The recovery process of these intracellular pigments involves a crucial stage of cell lysis. Thus, the present study aimed to evaluate different methods of yeast cell lysis (Sporobolomyces ruberrimus) in order to optimize the recovery of intracellular pigments. The first stage of the research, conducted through a 23 factorial design with central point sought to evaluate which of the parameters investigated (cell concentration, gradient of lysing agent and stirring speed) affect, more significantly, the amount of total carotenoids recovered. The initial study indicated that the research should be performed with a fixed cell concentration. So, from these results, it was defined cell concentration of 500 mg / L and the new 22 factorial design with central point was set. The independent variables applying vortex + lysing agents were optimized for the conditions studied in 135 mg of glass beads and 1230 rpm stirring speed to vortex + glass beads method. Already the chemical method 'classic' (dimethylsulfoxide) considered by the literature presented as significant independent variable only the concentration of lysing agent whose optimum value found was 2,7 mL DMSO. The same planning and conditions were applied on the use of planetary mill, where the efficiency of the process is independent of any of the parameters evaluated, enabling the use of milder processing conditions (135 mg extracting agent and 200 rpm of stirring speed). As for the cell lysis, direct microscopic analysis indicated that mechanical methods for cell lysis studied were more efficient in the laceration of the cells and that the extraction of intracellular carotenoids employing the chemical method with DMSO possibly occurs just by cell permeabilization. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2014 2021-08-16T20:13:11Z 2021-08-16T20:13:11Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://repositorio.cruzeirodosul.edu.br/handle/123456789/2577 |
url |
https://repositorio.cruzeirodosul.edu.br/handle/123456789/2577 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Positivo Brasil Pós-Graduação Programa de Pós-Graduação em Biotecnologia Industrial UP |
publisher.none.fl_str_mv |
Universidade Positivo Brasil Pós-Graduação Programa de Pós-Graduação em Biotecnologia Industrial UP |
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reponame:Repositório do Centro Universitário Braz Cubas instname:Centro Universitário Braz Cubas (CUB) instacron:CUB |
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Centro Universitário Braz Cubas (CUB) |
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Repositório do Centro Universitário Braz Cubas |
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Repositório do Centro Universitário Braz Cubas - Centro Universitário Braz Cubas (CUB) |
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bibli@brazcubas.edu.br |
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