Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Trabalho de conclusão de curso |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Monografias da UFMT |
Texto Completo: | http://bdm.ufmt.br/handle/1/1277 |
Resumo: | Dehydration is a technique widely used in the preservation of perishable products, where the moisture content of the food is reduced to very low levels, consequently reducing its deterioration. The present study aimed to analyze qualitatively apple slices submitted to different antioxidant agents and dehydration temperatures, as well as to quantify the loss of mass and the volumetric contraction during the process. In the pre-treatments with antioxidants were used: citric acid (0.5%) and sodium bisulfite (0.5%). The samples were dehydrated in an oven with forced air circulation to the final moisture content of 0.11 ± 0.02 (decimal, b.s.) at temperatures of 50, 70 and 90 ° C. The monitoring of the dehydration process was carried out by mass loss through weighing at predefined time intervals. The three characteristic dimensions of the apple slices were also determined for determination of the volumetric contraction. The qualitative characteristics evaluated were: color, total soluble solids (ºBrix) and sensorial analysis measured by hedonic scale. The results showed that a large part of the slice volume reduction occurred in the first 90 minutes, corresponding to 30% of the time required to complete the process. The contraction at the beginning of dehydration was more significant when using higher temperatures. Pre-treatments had no influence on contraction. The time required to finalize the dehydration up to the pre-established final moisture content, when used at temperatures of 90 and 70 ° C was 18.2 and 9.1%, respectively, lower than the temperature of 50 ° C. The average mass loss was on the order of 83%. The results showed that the temperature that provided the greatest variation of the color attributes of the fruit in natura was at 70 ºC. The pre-treatments were efficient to avoid oxidation. In relation to the total soluble solids, there was no influence of the temperature, but a small tendency of increase of the SST content (ºBrix) was observed when pre-treatment with sodium bisulfite was carried out. The sensorial analysis showed that the highest acceptance of the slices and the prepared tea were at temperatures of 90 and 50 ºC, respectively, both with the pre-treatment of sodium bisulfite. |
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Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturasCNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLAAtributos qualitativosContração volumétricaPerecíveisQualitative attributesVolumetric contractionPerishableDehydration is a technique widely used in the preservation of perishable products, where the moisture content of the food is reduced to very low levels, consequently reducing its deterioration. The present study aimed to analyze qualitatively apple slices submitted to different antioxidant agents and dehydration temperatures, as well as to quantify the loss of mass and the volumetric contraction during the process. In the pre-treatments with antioxidants were used: citric acid (0.5%) and sodium bisulfite (0.5%). The samples were dehydrated in an oven with forced air circulation to the final moisture content of 0.11 ± 0.02 (decimal, b.s.) at temperatures of 50, 70 and 90 ° C. The monitoring of the dehydration process was carried out by mass loss through weighing at predefined time intervals. The three characteristic dimensions of the apple slices were also determined for determination of the volumetric contraction. The qualitative characteristics evaluated were: color, total soluble solids (ºBrix) and sensorial analysis measured by hedonic scale. The results showed that a large part of the slice volume reduction occurred in the first 90 minutes, corresponding to 30% of the time required to complete the process. The contraction at the beginning of dehydration was more significant when using higher temperatures. Pre-treatments had no influence on contraction. The time required to finalize the dehydration up to the pre-established final moisture content, when used at temperatures of 90 and 70 ° C was 18.2 and 9.1%, respectively, lower than the temperature of 50 ° C. The average mass loss was on the order of 83%. The results showed that the temperature that provided the greatest variation of the color attributes of the fruit in natura was at 70 ºC. The pre-treatments were efficient to avoid oxidation. In relation to the total soluble solids, there was no influence of the temperature, but a small tendency of increase of the SST content (ºBrix) was observed when pre-treatment with sodium bisulfite was carried out. The sensorial analysis showed that the highest acceptance of the slices and the prepared tea were at temperatures of 90 and 50 ºC, respectively, both with the pre-treatment of sodium bisulfite.A desidratação é uma técnica bastante utilizada na preservação de produtos perecíveis, onde o teor de água do alimento é reduzido até níveis muito baixos, consequentemente diminuindo sua deterioração. No presente estudo objetivou-se analisar qualitativamente fatias de maçã submetidas à diferentes agentes antioxidantes e temperaturas de desidratação, bem como, quantificar a perda de massa e a contração volumétrica durante o processo. Nos prétratamentos com antioxidantes foram utilizados: ácido cítrico (0,5%) e bissulfito de sódio (0,5%). As amostras foram desidratadas em estufa com circulação de ar forçada até o teor de água final de 0,11±0,02 (decimal, b.s.) nas temperaturas de 50, 70 e 90 °C. O acompanhamento do processo de desidratação foi realizado pela perda de massa por meio de pesagens em intervalos de tempo predefinidos, obtendo-se ainda, as três dimensões características das fatias de maçã para determinação da contração volumétrica. As características qualitativas avaliadas foram: cor, sólidos solúveis totais (ºBrix) e análise sensorial mensurada por escala hedônica. Os resultados demonstraram que boa parte da redução de volume das fatias ocorreu nos primeiros 90 minutos, correspondente a 30% do tempo necessário para finalização do processo. A contração no início da desidratação foi mais expressiva quando utilizado temperaturas maiores. Os pré-tratamentos não apresentaram influência sobre a contração. O tempo necessário para finalização da desidratação até o teor de água final pré-estabelecido, quando utilizadas as temperaturas de 90 e 70 ºC foi 18,2 e 9,1%, respectivamente, menor que na temperatura de 50 ºC. A perda de massa média foi na ordem de 83%. Os resultados obtidos demonstraram que a temperatura que proporcionou maiores variações dos atributos de cor da fruta in natura foi a 70 ºC. Os pré-tratamentos foram eficientes para evitar a oxidação. Em relação aos sólidos solúveis totais não houve influência da temperatura, porém observou-se pequena tendência de aumento do teor de SST (ºBrix) quando realizado o pré-tratamento com bissulfito de sódio. Pela análise sensorial tem-se que a maior aceitação das fatias e do chá preparado, foram para as temperaturas de 90 e 50 ºC, respectivamente, ambas com o pré-tratamento de bissulfito de sódio.Universidade Federal de Mato GrossoBrasilInstituto de Ciências Agrárias e Ambientais (ICAA) – SinopUFMT CUS - SinopEngenharia Agrícola e Ambiental - CUSRuffato, Solenirhttp://lattes.cnpq.br/7543025155880085Ruffato, Solenirhttp://lattes.cnpq.br/7543025155880085Keller, Ane Mari2019-07-09T17:08:11Z2018-03-202019-07-09T17:08:11Z2018-02-21info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/datasetKELLER, Ane Mari. Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas . 2018. 48f. Trabalho de Conclusão de Curso (Graduação em Engenharia Agrícola e Ambiental) – Universidade Federal de Mato Grosso, Instituto de Ciências Agrárias e Ambientais, Sinop, 2018.http://bdm.ufmt.br/handle/1/1277porinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Monografias da UFMTinstname:Universidade Federal de Mato Grosso (UFMT)instacron:UFMT2019-07-11T07:00:58Zoai:localhost:1/1277Biblioteca Digital de Monografiahttps://bdm.ufmt.br/PUBhttp://200.129.241.122/oai/requestopendoar:2019-07-11T07:00:58falseBiblioteca Digital de Monografiahttps://bdm.ufmt.br/PUBhttp://200.129.241.122/oai/requestbibliotecacentral@ufmt.br||opendoar:2019-07-11T07:00:58Biblioteca Digital de Monografias da UFMT - Universidade Federal de Mato Grosso (UFMT)false |
dc.title.none.fl_str_mv |
Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas |
title |
Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas |
spellingShingle |
Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas Keller, Ane Mari CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA Atributos qualitativos Contração volumétrica Perecíveis Qualitative attributes Volumetric contraction Perishable |
title_short |
Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas |
title_full |
Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas |
title_fullStr |
Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas |
title_full_unstemmed |
Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas |
title_sort |
Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas |
author |
Keller, Ane Mari |
author_facet |
Keller, Ane Mari |
author_role |
author |
dc.contributor.none.fl_str_mv |
Ruffato, Solenir http://lattes.cnpq.br/7543025155880085 Ruffato, Solenir http://lattes.cnpq.br/7543025155880085 |
dc.contributor.author.fl_str_mv |
Keller, Ane Mari |
dc.subject.por.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA Atributos qualitativos Contração volumétrica Perecíveis Qualitative attributes Volumetric contraction Perishable |
topic |
CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA Atributos qualitativos Contração volumétrica Perecíveis Qualitative attributes Volumetric contraction Perishable |
description |
Dehydration is a technique widely used in the preservation of perishable products, where the moisture content of the food is reduced to very low levels, consequently reducing its deterioration. The present study aimed to analyze qualitatively apple slices submitted to different antioxidant agents and dehydration temperatures, as well as to quantify the loss of mass and the volumetric contraction during the process. In the pre-treatments with antioxidants were used: citric acid (0.5%) and sodium bisulfite (0.5%). The samples were dehydrated in an oven with forced air circulation to the final moisture content of 0.11 ± 0.02 (decimal, b.s.) at temperatures of 50, 70 and 90 ° C. The monitoring of the dehydration process was carried out by mass loss through weighing at predefined time intervals. The three characteristic dimensions of the apple slices were also determined for determination of the volumetric contraction. The qualitative characteristics evaluated were: color, total soluble solids (ºBrix) and sensorial analysis measured by hedonic scale. The results showed that a large part of the slice volume reduction occurred in the first 90 minutes, corresponding to 30% of the time required to complete the process. The contraction at the beginning of dehydration was more significant when using higher temperatures. Pre-treatments had no influence on contraction. The time required to finalize the dehydration up to the pre-established final moisture content, when used at temperatures of 90 and 70 ° C was 18.2 and 9.1%, respectively, lower than the temperature of 50 ° C. The average mass loss was on the order of 83%. The results showed that the temperature that provided the greatest variation of the color attributes of the fruit in natura was at 70 ºC. The pre-treatments were efficient to avoid oxidation. In relation to the total soluble solids, there was no influence of the temperature, but a small tendency of increase of the SST content (ºBrix) was observed when pre-treatment with sodium bisulfite was carried out. The sensorial analysis showed that the highest acceptance of the slices and the prepared tea were at temperatures of 90 and 50 ºC, respectively, both with the pre-treatment of sodium bisulfite. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-03-20 2018-02-21 2019-07-09T17:08:11Z 2019-07-09T17:08:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/bachelorThesis info:eu-repo/semantics/dataset |
format |
bachelorThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
KELLER, Ane Mari. Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas . 2018. 48f. Trabalho de Conclusão de Curso (Graduação em Engenharia Agrícola e Ambiental) – Universidade Federal de Mato Grosso, Instituto de Ciências Agrárias e Ambientais, Sinop, 2018. http://bdm.ufmt.br/handle/1/1277 |
identifier_str_mv |
KELLER, Ane Mari. Pré-tratamentos de fatias de maçã Fuji para desidratação em diferentes temperaturas . 2018. 48f. Trabalho de Conclusão de Curso (Graduação em Engenharia Agrícola e Ambiental) – Universidade Federal de Mato Grosso, Instituto de Ciências Agrárias e Ambientais, Sinop, 2018. |
url |
http://bdm.ufmt.br/handle/1/1277 |
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.publisher.none.fl_str_mv |
Universidade Federal de Mato Grosso Brasil Instituto de Ciências Agrárias e Ambientais (ICAA) – Sinop UFMT CUS - Sinop Engenharia Agrícola e Ambiental - CUS |
publisher.none.fl_str_mv |
Universidade Federal de Mato Grosso Brasil Instituto de Ciências Agrárias e Ambientais (ICAA) – Sinop UFMT CUS - Sinop Engenharia Agrícola e Ambiental - CUS |
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reponame:Biblioteca Digital de Monografias da UFMT instname:Universidade Federal de Mato Grosso (UFMT) instacron:UFMT |
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Universidade Federal de Mato Grosso (UFMT) |
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UFMT |
institution |
UFMT |
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Biblioteca Digital de Monografias da UFMT |
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Biblioteca Digital de Monografias da UFMT |
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Biblioteca Digital de Monografias da UFMT - Universidade Federal de Mato Grosso (UFMT) |
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bibliotecacentral@ufmt.br|| |
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