Estudo Da Imobiliza O Celular De Saccharomyces Cerevisiae Em Alginato De C Lcio
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Estudo Da Imobiliza O Celular De Saccharomyces Cerevisiae Em Alginato De C Lcio
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Author : Gabriela Kovaleski
language : pt-BR
Publisher: AYA Editora
Release Date : 2020-08-25
Estudo Da Imobiliza O Celular De Saccharomyces Cerevisiae Em Alginato De C Lcio written by Gabriela Kovaleski and has been published by AYA Editora this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-25 with Medical categories.
A imobilização celular é um termo que descreve as muitas formas em que as células podem ser encapsuladas ou aprisionadas. Um dos métodos mais utilizados da imobilização celular é a encapsulação em matriz porosa. É baseada na inclusão de células dentro de uma rede/malha rígida impedindo que as células se difundam no meio. Possui vantagens comparada com o sistema convencional, como a alta densidade celular e processos mais rápidos, mas a transferência de massa e os parâmetros ideais são dificuldades encontradas na encapsulação. Neste trabalho foi estudado o processo de imobilização celular de leveduras através da técnica de encapsulação em alginato de cálcio durante a fermentação alcoólica. Para isso, realizou-se 4 etapas: a pré-fermentação, teste experimentais preliminares, experimento e a aplicação da encapsulação. Com os testes preliminares foi possível encontrar 11 variáveis que influenciam na encapsulação, onde 3 delas foram estudadas no expeirmento: a concentração do alginato de sódio, do cloreto de cálcio e a concentração inicial de leveduras. Nas concentrações de 3% e 4% de alginato de sódio, o pH, °Brix, a turbidez e o diâmetro das esferas foram semelhantes, mas utilizou-se a concentração de 3% nas próximas fermentações para diminuição dos custos. O mesmo foi observado com 3% e 4% de cloreto de cálcio nas análises de etanol e consumo de substrato. Com diferentes concentrações inicias de levedura (4x105, 5x106 e 1x107 células/mL), verificou-se que com a maior concentração de levedura o processo de fermentação foi mais rápido. O produto selecionado para aplicar essas variáveis foi a sidra. Conseguiu-se obter uma produção de etanol maior na sidra com leveduras imobilizadas que nas leveduras livres, já que nas primeiras leveduras são protegidas do etanol pela matriz. Análises de turbidez e coloração entre as sidras foram relacionadas. Com imagens realizadas pelo MEV, observou-se o crescimento celular nas esferas de alginato de cálcio. Concluem-se que a encapsulação de leveduras com alginato de cálcio possui vantagens como: alta concentração de células e produção de etanol mais rápida, e quando estudada as suas variáveis, é possível reduzir os custos desse método de imobilização.
Estudo Da Imobiliza O De C Lulas De Saccharomyces Cerevisiae Em Gel De Alginato De C Lcio No Processo De Fermenta O Alco Lica
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Author :
language : pt-BR
Publisher:
Release Date : 2005
Estudo Da Imobiliza O De C Lulas De Saccharomyces Cerevisiae Em Gel De Alginato De C Lcio No Processo De Fermenta O Alco Lica written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Este trabalho tem como objetivo central o oferecimento de uma contribuição para odesenvolvimento de tecnologias alternativas na produção de etanol pela via biotecnológica. Nessa direção, apresenta-se um estudo sobre as condições para a imobilização da leveduraSaccharomyces cerevisiae em alginato de cálcio e abordam-se aspectos de estabilidade depellets em um bioreator agitado a fim de investigar fatores importantes na operação debiorreatores com células imobilizadas. A metodologia da superfície de resposta (RSM), usando um projeto estatístico devarredura e um planejamento composto central, aliada a função desirability, foram usadospara avaliar a eficiência das partículas na fermentação alcoólica e otimizar as condições deimobilização. Utilizou-se um bioreator do tipo batelada com agitação mecânica e capacidadevolumétrica de 2 litros com controle de temperatura para o acompanhamento da concentraçãocelular livre e imobilizada, concentração de etanol e de glicose em intervalos de 2 horasdurante todo o ensaio. Os resultados para a faixa experimental explorada indicam que o procedimentosugerido leva a partículas suficientemente robustas no que diz respeito à imobilização. Otratamento das partículas com Al(NO3)3 resultou em pellets com satisfatória estabilidademecânica e ótima atividade metabólica para a produção de etanol, atingindo valores deconversão de até 94% do rendimento Pasteur.
Immobilized Microbial Cells
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Author : K. Venkatsubramanian
language : en
Publisher:
Release Date : 1979
Immobilized Microbial Cells written by K. Venkatsubramanian and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Science categories.
Based on a sumposium jointly sponsored by the ACS Divisions of Microbial and Biochemical Technology, Agricultural and Food Chemistry, and Carbohydrate at the 176th Meeting of the American Chemical Society, Miami Beach, Florida, September 14, 1978.
Enzyme Technology
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Author : Martin F. Chaplin
language : en
Publisher: CUP Archive
Release Date : 1990-08-31
Enzyme Technology written by Martin F. Chaplin and has been published by CUP Archive this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-08-31 with Medical categories.
This textbook provides a clear and authoritative guide to the principles and practice of the utilization of enzymes in biotechnology. Enzymes have increasingly important applications in the food and pharmaceutical industry, in medicine, and as biosensors.
Immobilised Living Cell Systems
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Author : Ronnie G. Willaert
language : en
Publisher:
Release Date : 1996-05-30
Immobilised Living Cell Systems written by Ronnie G. Willaert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-05-30 with Medical categories.
Fundamentals. Experimental techniques. Case studies.
Brewing Yeast And Fermentation
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Author : Christopher Boulton
language : en
Publisher: John Wiley & Sons
Release Date : 2013-04-25
Brewing Yeast And Fermentation written by Christopher Boulton and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-25 with Technology & Engineering categories.
Now Available for the First Time in Paperback! This unique volume provides a definitive overview of modern and traditional brewing fermentation. Written by two experts with unrivalled experience from years with a leading international brewer, coverage includes all aspects of brewing fermentation together with the biochemistry, physiology and genetics of brewers' yeast. Brewing Yeast and Fermentation is unique in that brewing fermentation and yeast biotechnology are covered in detail from a commercial perspective. Now available for the first time in paperback, the book is aimed at commercial brewers and their ingredient and equipment suppliers (including packaging manufacturers). It is also an essential reference source for students on brewing courses and workers in research and academic institutions. Definitive reference work and practical guide for the industry. Highly commercially relevant yet academically rigorous. Authors from industry leading brewers.
Fault Detection And Diagnosis In Industrial Systems
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Author : L.H. Chiang
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Fault Detection And Diagnosis In Industrial Systems written by L.H. Chiang and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Early and accurate fault detection and diagnosis for modern chemical plants can minimize downtime, increase the safety of plant operations, and reduce manufacturing costs. This book presents the theoretical background and practical techniques for data-driven process monitoring. It demonstrates the application of all the data-driven process monitoring techniques to the Tennessee Eastman plant simulator, and looks at the strengths and weaknesses of each approach in detail. A plant simulator and problems allow readers to apply process monitoring techniques.
Biofuel S Engineering Process Technology
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Author : Sabbas Radley
language : en
Publisher:
Release Date : 2016-04
Biofuel S Engineering Process Technology written by Sabbas Radley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04 with Biomass energy categories.
"Bioenergy is energy derived from biofuels. A biofuel is a fuel that is produced through contemporary biological processes, such as agriculture and anaerobic digestion, rather than a fuel produced by geological processes such as those involved in the formation of fossil fuels, such as coal and petroleum, from prehistoric biological matter. Overall, bioenergy covers approximately 10% of the total world energy demand. Traditional unprocessed biomass such as fuel wood, charcoal and animal dung accounts for most of this and represents the main source of energy for a large number of people in developing countries who use it mainly for cooking and heating. More advanced and efficient conversion technologies now allow the extraction of biofuels from materials such as wood, crops and waste material. Biofuels can be solid, gaseous or liquid, even though the term is often used in the literature in a narrow sense to refer only to liquid biofuels for transport. Biofuels may be derived from agricultural crops, including conventional food plants or from special energy crops. Biofuels may also be derived from forestry, agricultural or fishery products or municipal wastes, as well as from agro-industry, food industry and food service by-products and wastes. The two main types of biofuels currently in production are bioethanol and biodiesel. Bioethanol is used as a replacement for petrol and biodiesel is used as a replacement for diesel. Biofuels represent an immense growth opportunity around the world and have an important role to play in displacing the fossil fuels the world has relied upon in the past with a cleaner, renewable alternative. Biofuel's Engineering Process Technology is a comprehensive description and discussion of the concepts, systems, and technology involved in the production of fuels produced from plant and animal feedstocks. The book aims to be an inclusive summary of current biofuels concerns and thus contribute to the understanding of this important topic. Moreover, the biofuel is expected to be continuing in the foreseeable future and the reading of the biofuels features dealt with in this book, are mentioned for any person interested in understanding this varied and evolving subject."
Crowdsourced Geographic Information Use In Government
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Author : Mordechai Haklay; Vyron Antoniou; Sofia Basiouka; Robert Soden; Peter Mooney
language : en
Publisher: World Bank Publications
Release Date :
Crowdsourced Geographic Information Use In Government written by Mordechai Haklay; Vyron Antoniou; Sofia Basiouka; Robert Soden; Peter Mooney and has been published by World Bank Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
The acceptance of volunteered geographic information (VGI) as a valued and useful source of information for governments is growing at all levels. Put simply, VGI is “crowdsourced” geographic information provided by a wide range of participants with varying levels of education, knowledge and skills (see Michael Goodchild’s writing for the original definition of the term). While a growing body of research demonstrates the reliability and accuracy of VGI when compared to official or government produced data sets, the progression towards their adoption and wider use is slow. There are a range of mechanisms and methods available for ensuring that crowdsourced information is fit for purpose so concerns about data quality are not the major reason for the lack of adoption. Instead, organizational practices, regulations and legal issues limit the rate of change. This report is based on a six-month study of the use of VGI by government and aims to provide a guide for the successful implementation of VGI.
Brewing
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Author : C Bamforth
language : en
Publisher: Woodhead Publishing
Release Date : 2006-08-09
Brewing written by C Bamforth and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-08-09 with Technology & Engineering categories.
Brewing continues to be one of the most competitive and innovative sectors in the food and drink industry. This important book summarises the major recent technological changes in brewing and their impact on product range and quality. The first group of chapters review improvements in ingredients, including cereals, adjuncts, malt and hops, as well as ways of optimising the use of water. The following sequence of chapters discuss developments in particular technologies from fermentation and accelerated processing to filtration and stabilisation processes as well as packaging. A final series of chapters analyse improvements in safety and quality control, covering such topics as modern brewery sanitation, waste handling, quality assurance schemes, and control systems responsible for chemical, microbiological and sensory analysis. With its distinguished editor and international team of contributors, Brewing: new technologies is a standard reference for R&D and Quality Assurance managers in the brewing industry. Summarises the major recent technological changes in brewing Reviews improvements in ingredients including cereals, malts and hops Discusses developments in fermentation, filtration and packaging technologies