Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita

Detalhes bibliográficos
Autor(a) principal: Pereira, Carlise
Data de Publicação: 2014
Tipo de documento: Tese
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações do UFSM
Texto Completo: http://repositorio.ufsm.br/handle/1/3244
Resumo: Stevia rebaudiana is a perennial plant, native to South America; it has natural sweeteners (steviol glycosides) on their leaves free of calories, very sweet and could be replaced by sucrose without presenting problems to diabetic people diet. Stevia cultivation is widespread all over the world under different weather conditions and the environmental factors could affect the stevia yield. The aims of this study were to evaluate dry weight and sweetener concentration in Stevia rebaudiana leaves during different periods in the year to determinate the best time for harvesting and to verify the influence of environmental conditions in the sweeteners yield. The first trial was carried out during 2012/2013 agricultural year. In total 120 plants were selected and divided in six groups with 20 plants each. Twelve harvests were performed and the higher yield was reached in December at the first harvest for groups 3, 4 and 2 (292.4; 285.2 and 206.7 g m-2, respectively). The sweetener concentrations have differentiated between the date of the harvest and the compounds analysed. The highest concentrations of stevioside (12.16% and 11.36%) and rebaudioside C (2.95% e 1.95%) were found during the harvest in January while the sweetener rebaudioside A, the highest concentrations were 7.01%; 6.16% and 6.15% in December, February and March, respectively. The heighest stevioside concentrations (per cent) (12.16% and 11.36%) and rebaudioside C (2.95% and 1.95%) were found to the harvest done in January, whereas to rebaudioside A, the heighest concentration were in December (7.01%); February (6.16%) and March (6.15%). Photoperiod has influenced the number of days for each harvest as well as the sweetener concentration on the leaves. The second trial seven genotypes were tested by plants already established on the field. The higher yield of dry mass was found during the harvest in March and the sweetener concentrations have decreased to the second harvest comparing to the first one. The highest sweetener concentrations of stevioside in the first harvest were with the genotypes C1, C4 and C8 (11.24; 11.14 and 10.32%, respectively) and genotype C6 has presented the highest rebaudioside A and C concentrations (8.94 and 1.96% respectively).
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spelling 2017-04-272017-04-272014-12-16PEREIRA, Carlise. Dry weight and sweetener yield in stevia leaves related to harvest times.. 2014. 57 f. Tese (Doutorado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2014.http://repositorio.ufsm.br/handle/1/3244Stevia rebaudiana is a perennial plant, native to South America; it has natural sweeteners (steviol glycosides) on their leaves free of calories, very sweet and could be replaced by sucrose without presenting problems to diabetic people diet. Stevia cultivation is widespread all over the world under different weather conditions and the environmental factors could affect the stevia yield. The aims of this study were to evaluate dry weight and sweetener concentration in Stevia rebaudiana leaves during different periods in the year to determinate the best time for harvesting and to verify the influence of environmental conditions in the sweeteners yield. The first trial was carried out during 2012/2013 agricultural year. In total 120 plants were selected and divided in six groups with 20 plants each. Twelve harvests were performed and the higher yield was reached in December at the first harvest for groups 3, 4 and 2 (292.4; 285.2 and 206.7 g m-2, respectively). The sweetener concentrations have differentiated between the date of the harvest and the compounds analysed. The highest concentrations of stevioside (12.16% and 11.36%) and rebaudioside C (2.95% e 1.95%) were found during the harvest in January while the sweetener rebaudioside A, the highest concentrations were 7.01%; 6.16% and 6.15% in December, February and March, respectively. The heighest stevioside concentrations (per cent) (12.16% and 11.36%) and rebaudioside C (2.95% and 1.95%) were found to the harvest done in January, whereas to rebaudioside A, the heighest concentration were in December (7.01%); February (6.16%) and March (6.15%). Photoperiod has influenced the number of days for each harvest as well as the sweetener concentration on the leaves. The second trial seven genotypes were tested by plants already established on the field. The higher yield of dry mass was found during the harvest in March and the sweetener concentrations have decreased to the second harvest comparing to the first one. The highest sweetener concentrations of stevioside in the first harvest were with the genotypes C1, C4 and C8 (11.24; 11.14 and 10.32%, respectively) and genotype C6 has presented the highest rebaudioside A and C concentrations (8.94 and 1.96% respectively).Originária da América do Sul, Stevia rebaudiana é uma planta arbustiva perene que possui edulcorantes naturais (glicosídeos de esteviol) com alto poder adoçante em suas folhas, livre de calorias, podendo substituir a sacarose sem apresentar problemas na dieta de pessoas diabéticas. O cultivo de estévia é difundido em muitos países e os fatores climáticos podem influenciar significativamente o resultado de produtividade desta cultura. Os objetivos deste estudo foram avaliar massa seca e concetração de edulcorantes em folhas de estévia (Stevia rebaudiana) em diferentes períodos do ano para determinar a melhor época para a colheita e, verificar a influência dos fatores climáticos na quantidade dos edulcorantes. Os experimentos foram realizados nos anos agrícolas 2011/2012 e 2012/2013. No primeiro experimento 120 plantas foram divididas em seis grupos de 20 plantas cada. Doze cortes foram realizados, sendo a maior produtividade alcançada no mês de dezembro nos primeiros cortes dos grupos 3, 4 e 2 (292,4; 285,2 e 206,7 g m-2, respectivamente). A concentração dos edulcorantes nas folhas de estévia variou entre os períodos dos cortes e entre os compostos analisados. As concentrações mais altas de esteviosídeo (12,16% e 11,36%) e rebaudiosídeo C (2,95% e 1,95%) foram nas colheitas realizadas em janeiro, enquanto que para o rebaudiosídeo A (7,01%; 6,16% e 6,15%), as maiores porcentagens foram alcançadas nos meses de dezembro, fevereiro e março. O fotoperíodo influenciou o número de dias para o corte realizado bem como a concentração de edulcorantes nas folhas. No segundo experimento foram testados sete genótipos selecionados a partir de plantas já estabelecidas. A maior produtividade de massa seca foi encontrada no corte realizado no mês de março e, as concentrações dos edulcorantes diminuíram no segundo corte em todos os genótipos. As porcentagens mais altas de esteviosídeo no primeiro corte foram nos genótipos C1, C4 e C8 (11,24; 11,14 e 10,32%, respectivamente) e, o genótipo C6 apresentou as maiores concentrações de rebaudiosídeo A e C (8,94 e 1,96% respectivamente).Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em AgronomiaUFSMBRAgronomiaStevia rebaudianaFatores climáticosGlicosídeos de esteviolStevia rebaudianaEnvironmental conditionsSteviol glycosidesCNPQ::CIENCIAS AGRARIAS::AGRONOMIAProdutividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheitaDry weight and sweetener yield in stevia leaves related to harvest times.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisStorck, Lindolfohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788328Y4Lopes, Sidinei Joséhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4700757Z3Bisognin, Dilson Antôniohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4791129Y6Storck, Cátia Reginahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4739044D9Oliveira, Paulo Henrique dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4794270U5http://lattes.cnpq.br/1558243453377889Pereira, Carlise500100000009400300300300300300300f3462709-c1c4-41bb-8e28-98b746a2b958ece6385a-8779-4633-a28a-aefba3734c55e3414408-e6b0-427d-a9e9-200c1243c22ea13554d7-5fa4-484e-a9ad-3ce710a9b8a2f3a73c92-ec4f-4466-b6ec-449a0a3a093f309ff064-639e-4f56-9987-54bb4800a1fdinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALPEREIRA, CARLISE.pdfapplication/pdf958172http://repositorio.ufsm.br/bitstream/1/3244/1/PEREIRA%2c%20CARLISE.pdfd41a53f8538697876f0d20fe439b8658MD51TEXTPEREIRA, CARLISE.pdf.txtPEREIRA, CARLISE.pdf.txtExtracted texttext/plain107960http://repositorio.ufsm.br/bitstream/1/3244/2/PEREIRA%2c%20CARLISE.pdf.txt13b13b688828248a8a3776bce159ce73MD52THUMBNAILPEREIRA, CARLISE.pdf.jpgPEREIRA, CARLISE.pdf.jpgIM Thumbnailimage/jpeg4835http://repositorio.ufsm.br/bitstream/1/3244/3/PEREIRA%2c%20CARLISE.pdf.jpgdc4cd4f89020cbb892732b54dd35e212MD531/32442017-07-25 10:53:02.142oai:repositorio.ufsm.br:1/3244Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2017-07-25T13:53:02Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false
dc.title.por.fl_str_mv Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita
dc.title.alternative.eng.fl_str_mv Dry weight and sweetener yield in stevia leaves related to harvest times.
title Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita
spellingShingle Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita
Pereira, Carlise
Stevia rebaudiana
Fatores climáticos
Glicosídeos de esteviol
Stevia rebaudiana
Environmental conditions
Steviol glycosides
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
title_short Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita
title_full Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita
title_fullStr Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita
title_full_unstemmed Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita
title_sort Produtividade de massa seca e edulcorantes em folhas de estévia relacionados à época de colheita
author Pereira, Carlise
author_facet Pereira, Carlise
author_role author
dc.contributor.advisor1.fl_str_mv Storck, Lindolfo
dc.contributor.advisor1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788328Y4
dc.contributor.referee1.fl_str_mv Lopes, Sidinei José
dc.contributor.referee1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4700757Z3
dc.contributor.referee2.fl_str_mv Bisognin, Dilson Antônio
dc.contributor.referee2Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4791129Y6
dc.contributor.referee3.fl_str_mv Storck, Cátia Regina
dc.contributor.referee3Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4739044D9
dc.contributor.referee4.fl_str_mv Oliveira, Paulo Henrique de
dc.contributor.referee4Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4794270U5
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/1558243453377889
dc.contributor.author.fl_str_mv Pereira, Carlise
contributor_str_mv Storck, Lindolfo
Lopes, Sidinei José
Bisognin, Dilson Antônio
Storck, Cátia Regina
Oliveira, Paulo Henrique de
dc.subject.por.fl_str_mv Stevia rebaudiana
Fatores climáticos
Glicosídeos de esteviol
topic Stevia rebaudiana
Fatores climáticos
Glicosídeos de esteviol
Stevia rebaudiana
Environmental conditions
Steviol glycosides
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
dc.subject.eng.fl_str_mv Stevia rebaudiana
Environmental conditions
Steviol glycosides
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
description Stevia rebaudiana is a perennial plant, native to South America; it has natural sweeteners (steviol glycosides) on their leaves free of calories, very sweet and could be replaced by sucrose without presenting problems to diabetic people diet. Stevia cultivation is widespread all over the world under different weather conditions and the environmental factors could affect the stevia yield. The aims of this study were to evaluate dry weight and sweetener concentration in Stevia rebaudiana leaves during different periods in the year to determinate the best time for harvesting and to verify the influence of environmental conditions in the sweeteners yield. The first trial was carried out during 2012/2013 agricultural year. In total 120 plants were selected and divided in six groups with 20 plants each. Twelve harvests were performed and the higher yield was reached in December at the first harvest for groups 3, 4 and 2 (292.4; 285.2 and 206.7 g m-2, respectively). The sweetener concentrations have differentiated between the date of the harvest and the compounds analysed. The highest concentrations of stevioside (12.16% and 11.36%) and rebaudioside C (2.95% e 1.95%) were found during the harvest in January while the sweetener rebaudioside A, the highest concentrations were 7.01%; 6.16% and 6.15% in December, February and March, respectively. The heighest stevioside concentrations (per cent) (12.16% and 11.36%) and rebaudioside C (2.95% and 1.95%) were found to the harvest done in January, whereas to rebaudioside A, the heighest concentration were in December (7.01%); February (6.16%) and March (6.15%). Photoperiod has influenced the number of days for each harvest as well as the sweetener concentration on the leaves. The second trial seven genotypes were tested by plants already established on the field. The higher yield of dry mass was found during the harvest in March and the sweetener concentrations have decreased to the second harvest comparing to the first one. The highest sweetener concentrations of stevioside in the first harvest were with the genotypes C1, C4 and C8 (11.24; 11.14 and 10.32%, respectively) and genotype C6 has presented the highest rebaudioside A and C concentrations (8.94 and 1.96% respectively).
publishDate 2014
dc.date.issued.fl_str_mv 2014-12-16
dc.date.accessioned.fl_str_mv 2017-04-27
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dc.identifier.citation.fl_str_mv PEREIRA, Carlise. Dry weight and sweetener yield in stevia leaves related to harvest times.. 2014. 57 f. Tese (Doutorado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2014.
dc.identifier.uri.fl_str_mv http://repositorio.ufsm.br/handle/1/3244
identifier_str_mv PEREIRA, Carlise. Dry weight and sweetener yield in stevia leaves related to harvest times.. 2014. 57 f. Tese (Doutorado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2014.
url http://repositorio.ufsm.br/handle/1/3244
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