ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO
Main Author: | |
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Publication Date: | 2015 |
Format: | Master thesis |
Language: | por |
Source: | Biblioteca Digital de Teses e Dissertações do UNICENTRO |
Download full: | http://localhost:8080/tede/handle/tede/30 |
Summary: | The oils and their products are likely to suffer oxidation due to its composition of saturated and unsaturated fatty acids. Among the known products, oil and biodiesel obtained from sunflower, are one of the values that have lower oxidative stability. This paper aims to study the oxidative stability of the conventional type sunflower oil and high oleic, from its cultivation, crude vegetable oil production, processing into biodiesel and physicochemical characterizations of crude vegetable oil and biodiesel, checking their quality second standards. We selected three genotypes of the conventional type and two high oleic type for mechanical extraction of the cold oil, vegetable oil and subsequently underwent transesterification reaction via methyl route using homogeneous catalysis. The oils were within the standards for moisture, density, acid number, saponification number and iodine value. Biodiesel from all samples were within the rules on physical chemical characterization of pH, specific gravity, acid number, saponification number and iodine value. The oil and biodiesel derived from sunflower presented as characteristics, low values of oxidative stability, but the high oleic oil type (SYN 3950 and SYN 39A) and its biodiesel had higher oxidative stability compared with the samples of the conventional type. The alternative test antioxidants (Vitamin E and BTAH) showed that each antioxidant acts as its own characteristics, which may also act as proantioxidant accelerating the oxidation reaction, as in the case of BTAH. For the analyzes with Vitamin E at concentrations of 500 and 1000 ppm there was an increase in oxidative stability of the sample, while 1500 ppm, 7, 8, and 9% decreased the oxidative stability. |
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Banczek, Everson do PradoCPF:00032100000http://lattes.cnpq.br/7523573139592166Guerra, Edson PerezCPF:00000000034http://lattes.cnpq.br/8571916045049616CPF:06648792922http://lattes.cnpq.br/0493711663473105Berbel, Larissa Oliveira2016-09-20T12:11:29Z2015-07-202015-01-01BERBEL, Larissa Oliveira. Methyl oxidative stability of biodiesel conventional type sunflower oil and high oleic. 2015. 94 f. Dissertação (Mestrado em Biocombustiveis) - UNICENTRO - Universidade Estadual do Centro Oeste, Guarapuava, 2015.http://localhost:8080/tede/handle/tede/30The oils and their products are likely to suffer oxidation due to its composition of saturated and unsaturated fatty acids. Among the known products, oil and biodiesel obtained from sunflower, are one of the values that have lower oxidative stability. This paper aims to study the oxidative stability of the conventional type sunflower oil and high oleic, from its cultivation, crude vegetable oil production, processing into biodiesel and physicochemical characterizations of crude vegetable oil and biodiesel, checking their quality second standards. We selected three genotypes of the conventional type and two high oleic type for mechanical extraction of the cold oil, vegetable oil and subsequently underwent transesterification reaction via methyl route using homogeneous catalysis. The oils were within the standards for moisture, density, acid number, saponification number and iodine value. Biodiesel from all samples were within the rules on physical chemical characterization of pH, specific gravity, acid number, saponification number and iodine value. The oil and biodiesel derived from sunflower presented as characteristics, low values of oxidative stability, but the high oleic oil type (SYN 3950 and SYN 39A) and its biodiesel had higher oxidative stability compared with the samples of the conventional type. The alternative test antioxidants (Vitamin E and BTAH) showed that each antioxidant acts as its own characteristics, which may also act as proantioxidant accelerating the oxidation reaction, as in the case of BTAH. For the analyzes with Vitamin E at concentrations of 500 and 1000 ppm there was an increase in oxidative stability of the sample, while 1500 ppm, 7, 8, and 9% decreased the oxidative stability.Os óleos e seus produtos são susceptíveis a sofrer oxidação, devido à sua composição em ácidos graxos saturados e insaturados. Dentre os produtos conhecidos, o óleo e o biodiesel obtido do girassol, são um dos que apresentam menores valores de estabilidade oxidativa. O presente trabalho visa o estudo da estabilidade oxidativa do óleo de girassol do tipo convencional e alto oleico, desde seu cultivo, produção do óleo vegetal bruto, transformação em biodiesel e caracterizações físico-químicas do óleo vegetal bruto e do biodiesel, verificando sua qualidade segundo as normas. Foram selecionados três genótipos do tipo convencional e dois do tipo alto oleico para extração mecânica do óleo a frio, e posteriormente o óleo vegetal foi submetido à reação de transesterificação via rota metílica utilizando-se de catálise homogênea. Os óleos apresentaram-se dentro das normas para umidade, massa específica, índice de acidez, índice de saponificação e índice de iodo. O biodiesel de todas as amostras apresentaram-se dentro das normas na caracterização físicoquímica de pH, massa específica, índice de acidez, índice de saponificação e índice de iodo. O óleo e o biodiesel derivado do girassol apresentaram como características, baixos valores de estabilidade oxidativa, porém o óleo tipo alto oleico (SYN 3950 e SYN 39A) e seu biodiesel obtiveram maior estabilidade oxidativa comparando-se com as amostras do tipo convencional. O teste de antioxidantes alternativos (BTAH e a vitamina E) mostrou que cada antioxidante age conforme suas características próprias, podendo também atuar como pró-antioxidante acelerando a reação oxidativa, como no caso do BTAH. Para as análises com vitamina E nas concentrações de 500 e 1000 ppm observou-se o aumento da estabilidade oxidativa da amostra, enquanto que 1500 ppm, 7, 8, e 9% diminuíram sua estabilidade oxidativa.Made available in DSpace on 2016-09-20T12:11:29Z (GMT). No. of bitstreams: 1 PR LARISSA OLIVEIRA BERBEL.pdf: 2268667 bytes, checksum: da2fabe8f7e6babcbe066ce8b262a2c8 (MD5) Previous issue date: 2015-01-01Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfhttp://localhost:8080/tede/retrieve/546/PR%20LARISSA%20OLIVEIRA%20BERBEL.pdf.jpgporUNICENTRO - Universidade Estadual do Centro OestePrograma de Pós-Graduação em Bioenergia (Mestrado)UNICENTROBRUnicentro::Departamento de Ciências Agrárias e AmbientaisAntioxidantesÓleo vegetalTransesterificaçãoAntioxidantsvegetable oiltransesterificationOUTROSESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICOMethyl oxidative stability of biodiesel conventional type sunflower oil and high oleicinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-2202725866144043770600600600600-766110263886347971791409828585370309702075167498588264571info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UNICENTROinstname:Universidade Estadual do Centro-Oeste (UNICENTRO)instacron:UNICENTROORIGINALPR LARISSA OLIVEIRA BERBEL.pdfapplication/pdf2268667http://localhost:8080/tede/bitstream/tede/30/1/PR+LARISSA+OLIVEIRA+BERBEL.pdfda2fabe8f7e6babcbe066ce8b262a2c8MD51TEXTPR LARISSA OLIVEIRA BERBEL.pdf.txtPR LARISSA OLIVEIRA BERBEL.pdf.txttext/plain132665http://localhost:8080/tede/bitstream/tede/30/2/PR+LARISSA+OLIVEIRA+BERBEL.pdf.txt6bde70f08b4b375103669e6999fde7c6MD52THUMBNAILPR LARISSA OLIVEIRA BERBEL.pdf.jpgPR LARISSA OLIVEIRA BERBEL.pdf.jpgimage/jpeg3417http://localhost:8080/tede/bitstream/tede/30/3/PR+LARISSA+OLIVEIRA+BERBEL.pdf.jpg58b6e7d3f243842eb762167a1fedefeaMD53tede/302019-06-06 08:40:12.031oai:localhost:tede/30Biblioteca Digital de Teses e Dissertaçõeshttp://tede.unicentro.br:8080/jspui/PUBhttp://tede.unicentro.br/tde_oai/oai3.phprepositorio@unicentro.br||fabianoqueiroz@yahoo.com.bropendoar:2019-06-06T11:40:12Biblioteca Digital de Teses e Dissertações do UNICENTRO - Universidade Estadual do Centro-Oeste (UNICENTRO)false |
dc.title.por.fl_str_mv |
ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO |
dc.title.alternative.eng.fl_str_mv |
Methyl oxidative stability of biodiesel conventional type sunflower oil and high oleic |
title |
ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO |
spellingShingle |
ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO Berbel, Larissa Oliveira Antioxidantes Óleo vegetal Transesterificação Antioxidants vegetable oil transesterification OUTROS |
title_short |
ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO |
title_full |
ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO |
title_fullStr |
ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO |
title_full_unstemmed |
ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO |
title_sort |
ESTABILIDADE OXIDATIVA DO BIODIESEL METÁLICO DO ÓLEO DE GIRASSOL DO TIPO CONVENCIONAL E ALTO OLEICO |
author |
Berbel, Larissa Oliveira |
author_facet |
Berbel, Larissa Oliveira |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Banczek, Everson do Prado |
dc.contributor.advisor1ID.fl_str_mv |
CPF:00032100000 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/7523573139592166 |
dc.contributor.advisor-co1.fl_str_mv |
Guerra, Edson Perez |
dc.contributor.advisor-co1ID.fl_str_mv |
CPF:00000000034 |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/8571916045049616 |
dc.contributor.authorID.fl_str_mv |
CPF:06648792922 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0493711663473105 |
dc.contributor.author.fl_str_mv |
Berbel, Larissa Oliveira |
contributor_str_mv |
Banczek, Everson do Prado Guerra, Edson Perez |
dc.subject.por.fl_str_mv |
Antioxidantes Óleo vegetal Transesterificação |
topic |
Antioxidantes Óleo vegetal Transesterificação Antioxidants vegetable oil transesterification OUTROS |
dc.subject.eng.fl_str_mv |
Antioxidants vegetable oil transesterification |
dc.subject.cnpq.fl_str_mv |
OUTROS |
description |
The oils and their products are likely to suffer oxidation due to its composition of saturated and unsaturated fatty acids. Among the known products, oil and biodiesel obtained from sunflower, are one of the values that have lower oxidative stability. This paper aims to study the oxidative stability of the conventional type sunflower oil and high oleic, from its cultivation, crude vegetable oil production, processing into biodiesel and physicochemical characterizations of crude vegetable oil and biodiesel, checking their quality second standards. We selected three genotypes of the conventional type and two high oleic type for mechanical extraction of the cold oil, vegetable oil and subsequently underwent transesterification reaction via methyl route using homogeneous catalysis. The oils were within the standards for moisture, density, acid number, saponification number and iodine value. Biodiesel from all samples were within the rules on physical chemical characterization of pH, specific gravity, acid number, saponification number and iodine value. The oil and biodiesel derived from sunflower presented as characteristics, low values of oxidative stability, but the high oleic oil type (SYN 3950 and SYN 39A) and its biodiesel had higher oxidative stability compared with the samples of the conventional type. The alternative test antioxidants (Vitamin E and BTAH) showed that each antioxidant acts as its own characteristics, which may also act as proantioxidant accelerating the oxidation reaction, as in the case of BTAH. For the analyzes with Vitamin E at concentrations of 500 and 1000 ppm there was an increase in oxidative stability of the sample, while 1500 ppm, 7, 8, and 9% decreased the oxidative stability. |
publishDate |
2015 |
dc.date.available.fl_str_mv |
2015-07-20 |
dc.date.issued.fl_str_mv |
2015-01-01 |
dc.date.accessioned.fl_str_mv |
2016-09-20T12:11:29Z |
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BERBEL, Larissa Oliveira. Methyl oxidative stability of biodiesel conventional type sunflower oil and high oleic. 2015. 94 f. Dissertação (Mestrado em Biocombustiveis) - UNICENTRO - Universidade Estadual do Centro Oeste, Guarapuava, 2015. |
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http://localhost:8080/tede/handle/tede/30 |
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BERBEL, Larissa Oliveira. Methyl oxidative stability of biodiesel conventional type sunflower oil and high oleic. 2015. 94 f. Dissertação (Mestrado em Biocombustiveis) - UNICENTRO - Universidade Estadual do Centro Oeste, Guarapuava, 2015. |
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