Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/15906 |
Resumo: | Recently, global demand for ethanol fuel has expanded very rapidly, and this should further increase in the near future, almost all ethanol fuel is produced by fermentation of sucrose or glucose in Brazil and produced by corn in the USA, but these raw materials will not be enough to satisfy international demand. The aim of this work was studied the ethanol production from cashew apple juice. A commercial strain of Saccharomyces cerevisiae was used for the production of ethanol by fermentation of cashew apple juice. Growth kinetics and ethanol productivity were calculated for batch fermentation with different initial sugar (glucose + fructose) concentration (from 24.4 to 103.1 g.L-1). Maximal ethanol, cell and glycerol concentrations (44.4 g.L-1, 17.17 g.L-1, 6.4 g.L-1, respectively) were obtained when 103.1 g.L-1 of initial sugar concentration were used, respectively. Ethanol yield (YP/S) was calculated as 0.49 g (g glucose + fructose)-1. Pretreatment of cashew apple bagasse (CAB) with dilute sulfuric acid was investigated and evaluated some factors such as sulfuric acid concentration, solid concentration and time of pretreatment at 121°C. The maximum glucose yield (162.9 mg/gCAB) was obtained by the hydrolysis with H2SO4 0.6 mol.L-1 at 121°C for 15 min. Hydrolysate, containing 16 ± 2.0 g.L-1 of glucose, was used as fermentation medium for ethanol production by S. cerevisiae and obtained a ethanol concentration of 10.0 g.L-1 after 4 with a yield and productivity of 0.48 g (g glucose)-1 and 1.43 g.L-1.h-1, respectively. The enzymatic hydrolysis of cashew apple bagasse treated with diluted acid (CAB-H) and alkali (CAB-OH) was studied and to evaluate its fermentation to ethanol using S. cerevisiae. Glucose conversion of 82 ± 2 mg per g CAB-H and 730 ± 20 mg per g CAB-OH was obtained when was used 2% (w/v) of solid and loading enzymatic of 30 FPU/g bagasse at 45 °C. Ethanol concentration and productivity was achieved of 20.0 ± 0.2 g.L-1 and 3.33 g.L-1.h-1, respectively when using CAB-OH hydrolyzate (initial glucose concentration of 52.4 g.L-1). For CAB-H hydrolyzate (initial glucose concentration of 17.4 g.L-1), ethanol concentration and productivity was 8.2 ± 0.1 g.L-1 and 2.7 g.L-1.h-1, respectively. Hydrolyzates fermentation resulted in an ethanol yield of 0.38 g/g glucose and 0.47 g/g glucose, with pretreated CABOH and CAB-H, respectively. The potential of cashew apple bagasse as a source of sugars for ethanol production by Kluyveromyces marxianus CE025 was evaluated too in this work. First, the yeast CE025 was preliminary cultivated in a synthetic medium containing glucose and xylose. Results showed that it was able to produce ethanol and xylitol at pH 4.5. Next, cashew apple bagasse hydrolysate (CABH) was prepared by a diluted sulfuric acid pre-treatment. The fermentation of CABH was conducted at pH 4.5 in a batch-reactor, and only ethanol was produced by K. marxianus CE025. The influence of the temperature in the kinetic parameters was evaluated and best results of ethanol production (12.36 ± 0.06 g.L-1) was achieved at 30 ºC, which is also the optimum temperature for the formation of biomass and the ethanol with a volumetric production rate of 0.25 ± 0.01 g.L-1.h-1 and an ethanol yield of 0.42 ± 0.01 g/g glucose. The results of this study point out the potential of the cashew apple bagasse hydrolysate as a new source of sugars to produce ethanol by S. cerevisiae and K. marxianus CE025. With these results, conclude that the use of cashew apple juice and cashew apple bagasse as substrate for ethanol production will bring economic benefits to the process, because it is a low cost substrate and also solve a disposal problem, adding value to the chain and cashew nut production |
id |
UFRN_39b1f0660ba4ca8a5d010ec936111592 |
---|---|
oai_identifier_str |
oai:https://repositorio.ufrn.br:123456789/15906 |
network_acronym_str |
UFRN |
network_name_str |
Repositório Institucional da UFRN |
repository_id_str |
|
spelling |
Rocha, Maria Valderez Pontehttp://lattes.cnpq.br/0639546287060338http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788057U7Goncalves, Luciana Rocha Barroshttp://lattes.cnpq.br/2577657690021566Santos, Everaldo Silvino doshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4799564Y2Pagnoncelli, Maria Giovana Binderhttp://lattes.cnpq.br/1360308643397232Melo, Vânia Maria Macielhttp://lattes.cnpq.br/1572504650930605Gouveia, Ester Ribeirohttp://lattes.cnpq.br/6291196494488690Macedo, Gorete Ribeiro de2014-12-17T15:01:51Z2011-11-172014-12-17T15:01:51Z2010-11-22ROCHA, Maria Valderez Ponte. Bioethanol production from cashew apple (Anacardium occidentale L.) by submerged fermentation. 2010. 213 f. Tese (Doutorado em Pesquisa e Desenvolvimento de Tecnologias Regionais) - Universidade Federal do Rio Grande do Norte, Natal, 2010.https://repositorio.ufrn.br/jspui/handle/123456789/15906Recently, global demand for ethanol fuel has expanded very rapidly, and this should further increase in the near future, almost all ethanol fuel is produced by fermentation of sucrose or glucose in Brazil and produced by corn in the USA, but these raw materials will not be enough to satisfy international demand. The aim of this work was studied the ethanol production from cashew apple juice. A commercial strain of Saccharomyces cerevisiae was used for the production of ethanol by fermentation of cashew apple juice. Growth kinetics and ethanol productivity were calculated for batch fermentation with different initial sugar (glucose + fructose) concentration (from 24.4 to 103.1 g.L-1). Maximal ethanol, cell and glycerol concentrations (44.4 g.L-1, 17.17 g.L-1, 6.4 g.L-1, respectively) were obtained when 103.1 g.L-1 of initial sugar concentration were used, respectively. Ethanol yield (YP/S) was calculated as 0.49 g (g glucose + fructose)-1. Pretreatment of cashew apple bagasse (CAB) with dilute sulfuric acid was investigated and evaluated some factors such as sulfuric acid concentration, solid concentration and time of pretreatment at 121°C. The maximum glucose yield (162.9 mg/gCAB) was obtained by the hydrolysis with H2SO4 0.6 mol.L-1 at 121°C for 15 min. Hydrolysate, containing 16 ± 2.0 g.L-1 of glucose, was used as fermentation medium for ethanol production by S. cerevisiae and obtained a ethanol concentration of 10.0 g.L-1 after 4 with a yield and productivity of 0.48 g (g glucose)-1 and 1.43 g.L-1.h-1, respectively. The enzymatic hydrolysis of cashew apple bagasse treated with diluted acid (CAB-H) and alkali (CAB-OH) was studied and to evaluate its fermentation to ethanol using S. cerevisiae. Glucose conversion of 82 ± 2 mg per g CAB-H and 730 ± 20 mg per g CAB-OH was obtained when was used 2% (w/v) of solid and loading enzymatic of 30 FPU/g bagasse at 45 °C. Ethanol concentration and productivity was achieved of 20.0 ± 0.2 g.L-1 and 3.33 g.L-1.h-1, respectively when using CAB-OH hydrolyzate (initial glucose concentration of 52.4 g.L-1). For CAB-H hydrolyzate (initial glucose concentration of 17.4 g.L-1), ethanol concentration and productivity was 8.2 ± 0.1 g.L-1 and 2.7 g.L-1.h-1, respectively. Hydrolyzates fermentation resulted in an ethanol yield of 0.38 g/g glucose and 0.47 g/g glucose, with pretreated CABOH and CAB-H, respectively. The potential of cashew apple bagasse as a source of sugars for ethanol production by Kluyveromyces marxianus CE025 was evaluated too in this work. First, the yeast CE025 was preliminary cultivated in a synthetic medium containing glucose and xylose. Results showed that it was able to produce ethanol and xylitol at pH 4.5. Next, cashew apple bagasse hydrolysate (CABH) was prepared by a diluted sulfuric acid pre-treatment. The fermentation of CABH was conducted at pH 4.5 in a batch-reactor, and only ethanol was produced by K. marxianus CE025. The influence of the temperature in the kinetic parameters was evaluated and best results of ethanol production (12.36 ± 0.06 g.L-1) was achieved at 30 ºC, which is also the optimum temperature for the formation of biomass and the ethanol with a volumetric production rate of 0.25 ± 0.01 g.L-1.h-1 and an ethanol yield of 0.42 ± 0.01 g/g glucose. The results of this study point out the potential of the cashew apple bagasse hydrolysate as a new source of sugars to produce ethanol by S. cerevisiae and K. marxianus CE025. With these results, conclude that the use of cashew apple juice and cashew apple bagasse as substrate for ethanol production will bring economic benefits to the process, because it is a low cost substrate and also solve a disposal problem, adding value to the chain and cashew nut productionRecentemente, a demanda mundial por etanol combustível tem se expandido de forma muito rápida, sendo quase todo etanol combustível é produzido por fermentação de sacarose no Brasil ou glicose de milho nos Estados Unidos, porém, estas matérias-primas não serão suficientes para satisfazer a demanda internacional. Neste contexto, o objetivo deste trabalho foi avaliar a produção de bioetanol a partir do pedúnculo de caju. Para tal fim, inicialmente, estudou-se a produção de etanol utilizando o suco de caju como fonte de carbono, avaliando a influência da concentração inicial de substrato por Saccharomyces cerevisiae. Nessa etapa, os melhores resultados foram utilizando uma concentração inicial de açúcar de 87,71 g.L-1 obtendo a concentração máxima de etanol de 42,8 ± 3 g.L-1 com uma produtividade de 9,71 g.L-1.h-1 e rendimento de etanol de 0,49 g etanol/g glicose + frutose. Posteriormente, estudou-se a produção de etanol utilizando como material lignocelulósico o bagaço de caju (CAB) que continha 20,9% celulose, 16,3% hemicelulose e 33,6% lignina + cinzas. Inicialmente estudou-se o pré-tratamento do CAB com ácido sulfúrico diluído avaliando-se diferentes parâmetros, obtendo as maiores concentrações dos açúcares glicose (22,8 ± 1,5 g.L-1) e xilarabin (arabinose + xilose plus, 29,2 ± 2,4 g.L-1), na fração líquida (CAB-H), no pré-tratamento conduzido em autoclave a 121°C por 15 min usando H2SO4 0,6 mol.L-1 e 30% m/v de CAB, com rendimentos de glicose, xilarabin e açúcares totais de 75,99 ± 5,0, 97,17 ± 8,1 e 173,16 ± 13,0 mg.(g de bagaço)-1, respectivamente. A conversão obtida nesse pré-tratamento com base na percentagem de celulose e hemicelulose do CAB foi 322,1 ± 20,1 mg glicose.(g celulose)-1 e 514,1 ± 43,1 mg xilarabin.(g hemicelulose)-1. Na fermentação do hidrolisado CAB-H por S. cerevisiae obteve-se 10 g.L-1 de etanol após 4 horas de cultivo, com rendimento de 0,48 g.(g glicose)-1 e produtividade de 2,62 g.L-1h-1. Após, estudou-se a hidrólise enzimática do CAB após pré-tratamento com H2SO4 diluído (CAB-H) e alcalino (CAB-OH) e a fermentação dos hidrolisados por S. cerevisiae para produzir etanol. Uma conversão de glicose de 82 ± 2 mg.(gCAB-H)-1 e 730 ± 20 mg.(gCAB-OH)-1 foi obtida utilizando 2% (m/v) de sólidos e carga enzimática de 30 FPU.(g bagaço)-1 a 45°C. Na fermentação conduzida com o hidrolisado obtido da hidrólise enzimática do CAB-OH, obteve-se uma concentração de etanol, produtividade e rendimento de 20,0 ± 0,2 g.L-1, 3,33 g.L-1.h-1 e 0,38 g.(g de glicose)-1, respectivamente. Para o hidrolisado da hidrólise do CAB-H, a concentração de etanol foi 8,2 ± 0,1 g.L-1 com 2,7 g.L-1.h-1 de produtividade e rendimento de 0,47 g.(g glicose)-1 em 3 h de ensaio. O potencial do bagaço de caju como fonte de açúcares para a produção de etanol por Kluyveromyces marxianus CE025 também foi avaliado e verificou-se a influência da temperatura nos parâmetros cinéticos, sendo os ensaios conduzidos em batelada a pH 4,5, utilizado o hidrolisado (CAB-H) como fonte de carbono. Os melhores resultados para a produção de etanol foram a 30°C, coincidindo com a temperatura ótima de crescimento, resultando em 12,36 ± 0,06 g.L-1 de etanol, com uma taxa volumétrica de produção de 0,26 ± 0,01 g.L-1.h-1 e rendimento de 0,42 ± 0,01 g.(g de glicose)- 1. Os resultados apresentados demonstram o potencial do pedúnculo de caju (suco e bagaço) como nova fonte de carbono para produzir etanol por S. cerevisiae e K. marxianus CE025Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal do Rio Grande do NortePrograma de Pós-Graduação em Engenharia QuímicaUFRNBRPesquisa e Desenvolvimento de Tecnologias RegionaisEtanolSuco de cajuBagaço de cajuSaccharomyces cerevisiaeKluyveromyces marxianusPré-tratamentoHidrólise EnzimáticaEthanolCashew apple juiceCashew apple bagasseSaccharomyces cerevisiaeKluyveromyces marxianusPretreatmentEnzymatic hydrolysisCNPQ::ENGENHARIAS::ENGENHARIA QUIMICAProdução de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersaProdução de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersaBioethanol production from cashew apple (Anacardium occidentale L.) by submerged fermentationBioethanol production from cashew apple (Anacardium occidentale L.) by submerged fermentationinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALMariaVPR_TESE.pdfMariaVPR_TESE.pdfapplication/pdf7545476https://repositorio.ufrn.br/bitstream/123456789/15906/1/MariaVPR_TESE.pdf43de9e8b1bb8bd71a49d9f69bb799425MD51TEXTMariaVPR_TESE.pdf.txtMariaVPR_TESE.pdf.txtExtracted texttext/plain440041https://repositorio.ufrn.br/bitstream/123456789/15906/6/MariaVPR_TESE.pdf.txt7ca953a4951bb7f067adb5694ab38decMD56THUMBNAILMariaVPR_TESE.pdf.jpgMariaVPR_TESE.pdf.jpgIM Thumbnailimage/jpeg4364https://repositorio.ufrn.br/bitstream/123456789/15906/7/MariaVPR_TESE.pdf.jpg1149e2f7d444f85a549bf7fbcb5aa177MD57123456789/159062017-11-02 05:13:08.333oai:https://repositorio.ufrn.br:123456789/15906Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2017-11-02T08:13:08Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.por.fl_str_mv |
Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa |
dc.title.alternative.eng.fl_str_mv |
Bioethanol production from cashew apple (Anacardium occidentale L.) by submerged fermentation Bioethanol production from cashew apple (Anacardium occidentale L.) by submerged fermentation |
title |
Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa |
spellingShingle |
Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa Rocha, Maria Valderez Ponte Etanol Suco de caju Bagaço de caju Saccharomyces cerevisiae Kluyveromyces marxianus Pré-tratamento Hidrólise Enzimática Ethanol Cashew apple juice Cashew apple bagasse Saccharomyces cerevisiae Kluyveromyces marxianus Pretreatment Enzymatic hydrolysis CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
title_short |
Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa |
title_full |
Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa |
title_fullStr |
Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa |
title_full_unstemmed |
Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa |
title_sort |
Produção de bioetanol a partir de pedúnculo de caju (Anacardium occidentale L.) por fermentação submersa |
author |
Rocha, Maria Valderez Ponte |
author_facet |
Rocha, Maria Valderez Ponte |
author_role |
author |
dc.contributor.authorID.por.fl_str_mv |
|
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/0639546287060338 |
dc.contributor.advisorID.por.fl_str_mv |
|
dc.contributor.advisorLattes.por.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788057U7 |
dc.contributor.advisor-co1ID.por.fl_str_mv |
|
dc.contributor.referees1.pt_BR.fl_str_mv |
Santos, Everaldo Silvino dos |
dc.contributor.referees1ID.por.fl_str_mv |
|
dc.contributor.referees1Lattes.por.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4799564Y2 |
dc.contributor.referees2.pt_BR.fl_str_mv |
Pagnoncelli, Maria Giovana Binder |
dc.contributor.referees2ID.por.fl_str_mv |
|
dc.contributor.referees2Lattes.por.fl_str_mv |
http://lattes.cnpq.br/1360308643397232 |
dc.contributor.referees3.pt_BR.fl_str_mv |
Melo, Vânia Maria Maciel |
dc.contributor.referees3ID.por.fl_str_mv |
|
dc.contributor.referees3Lattes.por.fl_str_mv |
http://lattes.cnpq.br/1572504650930605 |
dc.contributor.referees4.pt_BR.fl_str_mv |
Gouveia, Ester Ribeiro |
dc.contributor.referees4ID.por.fl_str_mv |
|
dc.contributor.referees4Lattes.por.fl_str_mv |
http://lattes.cnpq.br/6291196494488690 |
dc.contributor.author.fl_str_mv |
Rocha, Maria Valderez Ponte |
dc.contributor.advisor-co1.fl_str_mv |
Goncalves, Luciana Rocha Barros |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/2577657690021566 |
dc.contributor.advisor1.fl_str_mv |
Macedo, Gorete Ribeiro de |
contributor_str_mv |
Goncalves, Luciana Rocha Barros Macedo, Gorete Ribeiro de |
dc.subject.por.fl_str_mv |
Etanol Suco de caju Bagaço de caju Saccharomyces cerevisiae Kluyveromyces marxianus Pré-tratamento Hidrólise Enzimática |
topic |
Etanol Suco de caju Bagaço de caju Saccharomyces cerevisiae Kluyveromyces marxianus Pré-tratamento Hidrólise Enzimática Ethanol Cashew apple juice Cashew apple bagasse Saccharomyces cerevisiae Kluyveromyces marxianus Pretreatment Enzymatic hydrolysis CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
Ethanol Cashew apple juice Cashew apple bagasse Saccharomyces cerevisiae Kluyveromyces marxianus Pretreatment Enzymatic hydrolysis |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
description |
Recently, global demand for ethanol fuel has expanded very rapidly, and this should further increase in the near future, almost all ethanol fuel is produced by fermentation of sucrose or glucose in Brazil and produced by corn in the USA, but these raw materials will not be enough to satisfy international demand. The aim of this work was studied the ethanol production from cashew apple juice. A commercial strain of Saccharomyces cerevisiae was used for the production of ethanol by fermentation of cashew apple juice. Growth kinetics and ethanol productivity were calculated for batch fermentation with different initial sugar (glucose + fructose) concentration (from 24.4 to 103.1 g.L-1). Maximal ethanol, cell and glycerol concentrations (44.4 g.L-1, 17.17 g.L-1, 6.4 g.L-1, respectively) were obtained when 103.1 g.L-1 of initial sugar concentration were used, respectively. Ethanol yield (YP/S) was calculated as 0.49 g (g glucose + fructose)-1. Pretreatment of cashew apple bagasse (CAB) with dilute sulfuric acid was investigated and evaluated some factors such as sulfuric acid concentration, solid concentration and time of pretreatment at 121°C. The maximum glucose yield (162.9 mg/gCAB) was obtained by the hydrolysis with H2SO4 0.6 mol.L-1 at 121°C for 15 min. Hydrolysate, containing 16 ± 2.0 g.L-1 of glucose, was used as fermentation medium for ethanol production by S. cerevisiae and obtained a ethanol concentration of 10.0 g.L-1 after 4 with a yield and productivity of 0.48 g (g glucose)-1 and 1.43 g.L-1.h-1, respectively. The enzymatic hydrolysis of cashew apple bagasse treated with diluted acid (CAB-H) and alkali (CAB-OH) was studied and to evaluate its fermentation to ethanol using S. cerevisiae. Glucose conversion of 82 ± 2 mg per g CAB-H and 730 ± 20 mg per g CAB-OH was obtained when was used 2% (w/v) of solid and loading enzymatic of 30 FPU/g bagasse at 45 °C. Ethanol concentration and productivity was achieved of 20.0 ± 0.2 g.L-1 and 3.33 g.L-1.h-1, respectively when using CAB-OH hydrolyzate (initial glucose concentration of 52.4 g.L-1). For CAB-H hydrolyzate (initial glucose concentration of 17.4 g.L-1), ethanol concentration and productivity was 8.2 ± 0.1 g.L-1 and 2.7 g.L-1.h-1, respectively. Hydrolyzates fermentation resulted in an ethanol yield of 0.38 g/g glucose and 0.47 g/g glucose, with pretreated CABOH and CAB-H, respectively. The potential of cashew apple bagasse as a source of sugars for ethanol production by Kluyveromyces marxianus CE025 was evaluated too in this work. First, the yeast CE025 was preliminary cultivated in a synthetic medium containing glucose and xylose. Results showed that it was able to produce ethanol and xylitol at pH 4.5. Next, cashew apple bagasse hydrolysate (CABH) was prepared by a diluted sulfuric acid pre-treatment. The fermentation of CABH was conducted at pH 4.5 in a batch-reactor, and only ethanol was produced by K. marxianus CE025. The influence of the temperature in the kinetic parameters was evaluated and best results of ethanol production (12.36 ± 0.06 g.L-1) was achieved at 30 ºC, which is also the optimum temperature for the formation of biomass and the ethanol with a volumetric production rate of 0.25 ± 0.01 g.L-1.h-1 and an ethanol yield of 0.42 ± 0.01 g/g glucose. The results of this study point out the potential of the cashew apple bagasse hydrolysate as a new source of sugars to produce ethanol by S. cerevisiae and K. marxianus CE025. With these results, conclude that the use of cashew apple juice and cashew apple bagasse as substrate for ethanol production will bring economic benefits to the process, because it is a low cost substrate and also solve a disposal problem, adding value to the chain and cashew nut production |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010-11-22 |
dc.date.available.fl_str_mv |
2011-11-17 2014-12-17T15:01:51Z |
dc.date.accessioned.fl_str_mv |
2014-12-17T15:01:51Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
ROCHA, Maria Valderez Ponte. Bioethanol production from cashew apple (Anacardium occidentale L.) by submerged fermentation. 2010. 213 f. Tese (Doutorado em Pesquisa e Desenvolvimento de Tecnologias Regionais) - Universidade Federal do Rio Grande do Norte, Natal, 2010. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/15906 |
identifier_str_mv |
ROCHA, Maria Valderez Ponte. Bioethanol production from cashew apple (Anacardium occidentale L.) by submerged fermentation. 2010. 213 f. Tese (Doutorado em Pesquisa e Desenvolvimento de Tecnologias Regionais) - Universidade Federal do Rio Grande do Norte, Natal, 2010. |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/15906 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal do Rio Grande do Norte |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Química |
dc.publisher.initials.fl_str_mv |
UFRN |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Pesquisa e Desenvolvimento de Tecnologias Regionais |
publisher.none.fl_str_mv |
Universidade Federal do Rio Grande do Norte |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
instname_str |
Universidade Federal do Rio Grande do Norte (UFRN) |
instacron_str |
UFRN |
institution |
UFRN |
reponame_str |
Repositório Institucional da UFRN |
collection |
Repositório Institucional da UFRN |
bitstream.url.fl_str_mv |
https://repositorio.ufrn.br/bitstream/123456789/15906/1/MariaVPR_TESE.pdf https://repositorio.ufrn.br/bitstream/123456789/15906/6/MariaVPR_TESE.pdf.txt https://repositorio.ufrn.br/bitstream/123456789/15906/7/MariaVPR_TESE.pdf.jpg |
bitstream.checksum.fl_str_mv |
43de9e8b1bb8bd71a49d9f69bb799425 7ca953a4951bb7f067adb5694ab38dec 1149e2f7d444f85a549bf7fbcb5aa177 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN) |
repository.mail.fl_str_mv |
|
_version_ |
1802117624313675776 |