Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química

Detalhes bibliográficos
Autor(a) principal: Prado, Marcellie do
Data de Publicação: 2011
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
Texto Completo: http://repositorio.uem.br:8080/jspui/handle/1/1693
Resumo: The objective of this study was to evaluate the general characteristics of the skin and leather of Pseudoplatystoma sp through histological analysis, physico-chemical and mechanical. There were used skins of Pseudoplatystoma sp, from Piscicultura Mar e Terra, in Itaporã-MS. In experiment I was made the characterization of skins of Pseuplatystoma sp by morphology, chemical composition, hydroxyproline and resistance testing after tanning process. It was observed the epidermis, dermis and hypodermis. There was found that the skin has, 60.98% of moisture, 33.49% of crude protein, 1.67% of ether extract, 0.21% of ash and 2.72% of hydroxyproline. The leathers have high resistance to traction (27.47 N/mm2), progressive tearing (90.66 N/mm) and elasticity (69.10%). In experiment II, the objective was to evaluate the resistance of leathers of surubim submitted to change steps in the process of tanning, for different times of action of liming, levels of enzymes used in the purge step, tanning with and without chromium salts, different levels of oils used in the grease step and different tanning techniques. The leathers submitted to liming for 1 hour had a higher (78.89 N/mm) resistance to progressive tearing and maximum force (73.50 N) and there was no significant difference in traction and elongation. For purge, the leathers that were submitted to 0.7% for 40 minutes had a higher (43.80 N/mm2) resistance to traction and elasticity (78.06%), and no difference to progressive tearing (96.86 N/mm) was found. For the leathers tanned with and without chromium salts, the leathers with chromium salts showed higher resistance to traction (20.93 N/mm2), elasticity (52.40%) and progressive tearing (69, 97 N/mm), although they are not diferent from leathers without chromium. In the test with levels of oils, leathers not showed significant difference to traction, elongation and progressive tearing with the levels used. In the test of different techniques, leathers of the treatment three used higher force (225.81 N) and showed higher elasticity (71.81%). The leathers of treatment one showed higher (118.59 N/mm) resistance to progressive tearing. In experiment III, the objective was to evaluate the effect of different levels of oils used in the grease step, on the physico-mechanical and chemical properties of the surubim's leathers. Skins were submitted to tanning process and then it was added to each treatment 8%, 10%, 12%, 14% and 16% of oils. The levels of oils did not affect the thickness (0.98 to 0.66 mm) and resistance of leather to traction (17.72 to 29.15 N/mm2) and elongation (64.63% to 84.13%), maximum force applied in this test (142.70 to 217.53 N) and maximum force in progressive tearing (58.10 to 72.80 N).
id UEM-10_bd0e034edf95531eb158a7ed20908eb6
oai_identifier_str oai:localhost:1/1693
network_acronym_str UEM-10
network_name_str Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
repository_id_str
spelling Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e químicaSurubimPseudoplatystomaHistologiaResistência do couroMorfologiaBrasil.SurubimPseudoplatystomaHistologyLeather resistanceMorphologyBrazil.Ciências AgráriasZootecniaThe objective of this study was to evaluate the general characteristics of the skin and leather of Pseudoplatystoma sp through histological analysis, physico-chemical and mechanical. There were used skins of Pseudoplatystoma sp, from Piscicultura Mar e Terra, in Itaporã-MS. In experiment I was made the characterization of skins of Pseuplatystoma sp by morphology, chemical composition, hydroxyproline and resistance testing after tanning process. It was observed the epidermis, dermis and hypodermis. There was found that the skin has, 60.98% of moisture, 33.49% of crude protein, 1.67% of ether extract, 0.21% of ash and 2.72% of hydroxyproline. The leathers have high resistance to traction (27.47 N/mm2), progressive tearing (90.66 N/mm) and elasticity (69.10%). In experiment II, the objective was to evaluate the resistance of leathers of surubim submitted to change steps in the process of tanning, for different times of action of liming, levels of enzymes used in the purge step, tanning with and without chromium salts, different levels of oils used in the grease step and different tanning techniques. The leathers submitted to liming for 1 hour had a higher (78.89 N/mm) resistance to progressive tearing and maximum force (73.50 N) and there was no significant difference in traction and elongation. For purge, the leathers that were submitted to 0.7% for 40 minutes had a higher (43.80 N/mm2) resistance to traction and elasticity (78.06%), and no difference to progressive tearing (96.86 N/mm) was found. For the leathers tanned with and without chromium salts, the leathers with chromium salts showed higher resistance to traction (20.93 N/mm2), elasticity (52.40%) and progressive tearing (69, 97 N/mm), although they are not diferent from leathers without chromium. In the test with levels of oils, leathers not showed significant difference to traction, elongation and progressive tearing with the levels used. In the test of different techniques, leathers of the treatment three used higher force (225.81 N) and showed higher elasticity (71.81%). The leathers of treatment one showed higher (118.59 N/mm) resistance to progressive tearing. In experiment III, the objective was to evaluate the effect of different levels of oils used in the grease step, on the physico-mechanical and chemical properties of the surubim's leathers. Skins were submitted to tanning process and then it was added to each treatment 8%, 10%, 12%, 14% and 16% of oils. The levels of oils did not affect the thickness (0.98 to 0.66 mm) and resistance of leather to traction (17.72 to 29.15 N/mm2) and elongation (64.63% to 84.13%), maximum force applied in this test (142.70 to 217.53 N) and maximum force in progressive tearing (58.10 to 72.80 N).Este trabalho teve como objetivo avaliar as características gerais da pele e do couro de Pseudoplatystoma sp, através de análise histológica, físico-química e mecânica. Foram utilizadas peles de Pseudoplatystoma sp, provenientes da Piscicultura Mar e Terra, em Itaporã-MS. No experimento I, foi realizada a caracterização das peles Pseudoplatystoma sp através da morfologia, composição química, hidroxiprolina e testes de resistência, após o curtimento da pele. Foram observadas a epiderme, derme e hipoderme. Observou-se que a pele possui 60,98% de umidade, 33,49% de proteína bruta, 1,67% de extrato etéreo, 0,21% de cinzas e 2,72% de hidroxiprolina. Os couros possuem elevada resistência à tração (27,47 N/mm2), rasgamento progressivo (90,66 N/mm) e elasticidade (69,10%). No experimento II, o objetivo foi avaliar a resistência dos couros de surubim, submetidos as alterações nas etapas do processo de curtimento, em função dos diferentes tempos de ação do caleiro, níveis de enzimas utilizadas na etapa de purga, curtimento com e sem sais de cromo, diferentes níveis de óleos utilizados na etapa de engraxe e diferentes técnicas de curtimento. Os couros submetidos ao caleiro por 1 hora apresentaram maior (78,89 N/mm) resistência ao rasgamento progressivo e força máxima (73,50 N) e não houve diferença significativa para tração e alongamento. Para purga, os couros que receberam 0,7% por 40 minutos apresentaram maior resistência à tração (43,80 N/mm2) e elasticidade (78,06%), e não houve diferença para rasgamento progressivo (96,86 N/mm). Para os couros curtidos com e sem sais de cromo, os couros com cromo apresentaram maiores valores de resistência à tração (20,93 N/mm2), elasticidade (52,40%) e rasgamento progressivo (69,97 N/mm), apesar de não ter diferido dos couros sem cromo. No ensaio com níveis de óleos, os couros não apresentaram diferença significativa para tração, alongamento e rasgamento progressivo com os níveis utilizados. No ensaio das diferentes técnicas, couros do tratamento três utilizaram maior força (225,81 N) e apresentaram maior elasticidade (71,81%). Os couros do tratamento um apresentaram maior (118,59 N/mm) resistência ao rasgamento progressivo. No experimento III, o objetivo foi avaliar o efeito de diferentes níveis de óleos utilizados na etapa de engraxe, sobre as características físico-mecânicas e químicas dos couros de surubim. Peles foram submetidas ao processo de curtimento, e adicionados a cada tratamento 8%, 10%, 12%, 14% e 16% de óleos. Os níveis de óleos utilizados não influenciaram na espessura (0,98 a 0,66 mm) e na resistência do couro para tração (17,72 a 29,15 N/mm2) e alongamento (64,63% a 84,13%), força máxima aplicada neste teste (142,70 a 217,53 N) e força máxima no rasgamento progressivo (58,10 a 72,80 N).xii, 74 fUniversidade Estadual de MaringáBrasilDepartamento de ZootecniaPrograma de Pós-Graduação em ZootecniaUEMMaringá, PRCentro de Ciências AgráriasMaria Luiza Rodrigues de Souza FrancoDoroty Mesquita Dourado - UNIDERPEliane Gasparino - UEMPrado, Marcellie do2018-04-06T18:17:44Z2018-04-06T18:17:44Z2011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://repositorio.uem.br:8080/jspui/handle/1/1693porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)instname:Universidade Estadual de Maringá (UEM)instacron:UEM2018-10-16T17:19:59Zoai:localhost:1/1693Repositório InstitucionalPUBhttp://repositorio.uem.br:8080/oai/requestopendoar:2024-04-23T14:54:40.896628Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química
title Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química
spellingShingle Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química
Prado, Marcellie do
Surubim
Pseudoplatystoma
Histologia
Resistência do couro
Morfologia
Brasil.
Surubim
Pseudoplatystoma
Histology
Leather resistance
Morphology
Brazil.
Ciências Agrárias
Zootecnia
title_short Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química
title_full Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química
title_fullStr Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química
title_full_unstemmed Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química
title_sort Características da pele de Pseudoplatystoma sp submetida ao processo de curtimento : morfologia, resistência físico-mecânica e química
author Prado, Marcellie do
author_facet Prado, Marcellie do
author_role author
dc.contributor.none.fl_str_mv Maria Luiza Rodrigues de Souza Franco
Doroty Mesquita Dourado - UNIDERP
Eliane Gasparino - UEM
dc.contributor.author.fl_str_mv Prado, Marcellie do
dc.subject.por.fl_str_mv Surubim
Pseudoplatystoma
Histologia
Resistência do couro
Morfologia
Brasil.
Surubim
Pseudoplatystoma
Histology
Leather resistance
Morphology
Brazil.
Ciências Agrárias
Zootecnia
topic Surubim
Pseudoplatystoma
Histologia
Resistência do couro
Morfologia
Brasil.
Surubim
Pseudoplatystoma
Histology
Leather resistance
Morphology
Brazil.
Ciências Agrárias
Zootecnia
description The objective of this study was to evaluate the general characteristics of the skin and leather of Pseudoplatystoma sp through histological analysis, physico-chemical and mechanical. There were used skins of Pseudoplatystoma sp, from Piscicultura Mar e Terra, in Itaporã-MS. In experiment I was made the characterization of skins of Pseuplatystoma sp by morphology, chemical composition, hydroxyproline and resistance testing after tanning process. It was observed the epidermis, dermis and hypodermis. There was found that the skin has, 60.98% of moisture, 33.49% of crude protein, 1.67% of ether extract, 0.21% of ash and 2.72% of hydroxyproline. The leathers have high resistance to traction (27.47 N/mm2), progressive tearing (90.66 N/mm) and elasticity (69.10%). In experiment II, the objective was to evaluate the resistance of leathers of surubim submitted to change steps in the process of tanning, for different times of action of liming, levels of enzymes used in the purge step, tanning with and without chromium salts, different levels of oils used in the grease step and different tanning techniques. The leathers submitted to liming for 1 hour had a higher (78.89 N/mm) resistance to progressive tearing and maximum force (73.50 N) and there was no significant difference in traction and elongation. For purge, the leathers that were submitted to 0.7% for 40 minutes had a higher (43.80 N/mm2) resistance to traction and elasticity (78.06%), and no difference to progressive tearing (96.86 N/mm) was found. For the leathers tanned with and without chromium salts, the leathers with chromium salts showed higher resistance to traction (20.93 N/mm2), elasticity (52.40%) and progressive tearing (69, 97 N/mm), although they are not diferent from leathers without chromium. In the test with levels of oils, leathers not showed significant difference to traction, elongation and progressive tearing with the levels used. In the test of different techniques, leathers of the treatment three used higher force (225.81 N) and showed higher elasticity (71.81%). The leathers of treatment one showed higher (118.59 N/mm) resistance to progressive tearing. In experiment III, the objective was to evaluate the effect of different levels of oils used in the grease step, on the physico-mechanical and chemical properties of the surubim's leathers. Skins were submitted to tanning process and then it was added to each treatment 8%, 10%, 12%, 14% and 16% of oils. The levels of oils did not affect the thickness (0.98 to 0.66 mm) and resistance of leather to traction (17.72 to 29.15 N/mm2) and elongation (64.63% to 84.13%), maximum force applied in this test (142.70 to 217.53 N) and maximum force in progressive tearing (58.10 to 72.80 N).
publishDate 2011
dc.date.none.fl_str_mv 2011
2018-04-06T18:17:44Z
2018-04-06T18:17:44Z
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 http://repositorio.uem.br:8080/jspui/handle/1/1693
url http://repositorio.uem.br:8080/jspui/handle/1/1693
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 Estadual de Maringá
Brasil
Departamento de Zootecnia
Programa de Pós-Graduação em Zootecnia
UEM
Maringá, PR
Centro de Ciências Agrárias
publisher.none.fl_str_mv Universidade Estadual de Maringá
Brasil
Departamento de Zootecnia
Programa de Pós-Graduação em Zootecnia
UEM
Maringá, PR
Centro de Ciências Agrárias
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
collection Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
repository.name.fl_str_mv Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv
_version_ 1813258643689177088