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Doctoral Thesis
DOI
10.11606/T.11.2005.tde-11012006-153857
Document
Author
Full name
Adriano Tosoni da Eira Aguiar
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Piracicaba, 2005
Supervisor
Committee
Favarin, Jose Laercio (President)
Costa, Jose Dias
Fazuoli, Luiz Carlos
Giomo, Gerson Silva
Scarpare Filho, João Alexio
Title in Portuguese
Atributos químicos de espécies de café
Keywords in Portuguese
café
composição química
variedades vegetais
Abstract in Portuguese
Esta pesquisa foi realizada com o objetivo de caracterizar cafeeiros de sete espécies de Coffea e das respectivas variedades pertencentes a C. canephora e C. liberica presentes no Banco de Germoplasma de Café do Instituto Agronômico de Campinas, visando à possibilidade do seu agrupamento, bem como a sua utilização no melhoramento das espécies C. arabica e C. canephora. Para o referido estudo foram utilizadas cento e dez plantas pertencentes a sete espécies e treze variedades, tendo sido avaliadas em função das características químicas de sementes como: sólidos solúveis, lipídios, trigonelina, ácidos clorogênicos e cafeína. Com base nos resultados destas variáveis observou-se uma grande variação entre e dentro dos diferentes materiais analisados, com valores extremos de 24,12% a 31,00% para sólidos solúveis; 6,61% a 17,49% para lipídios; 0,32% a 2,15% para trigonelina; 2,58% a 6,38% para ácidos clorogênicos e 0,80% a 3,29% para cafeína, indicando que estes atributos podem ser adotados na seleção de plantas com potencial para o melhoramento das espécies C. arabica e C. canephora. Os resultados evidenciam que as variáveis: (i) sólidos solúveis, lipídios, ácidos clorogênicos e cafeína permitem o agrupamento das variedades de C. canephora; (ii) sólidos solúveis, lipídios e trigonelina possibilitam discriminar as variedades de C. liberica; e, (iii) lipídios, ácidos clorogênicos, trigonelina e cafeína foram eficientes no agrupamento das sete espécies de Coffea. As variedades de C. canephora não apresentaram diferenças para o teor de trigonelina, enquanto as de C. liberica não variaram em relação aos teores de ácidos clorogênicos e cafeína. O conjunto dos dados obtidos para as variáveis químicas analisadas indica que há possibilidade das variedades Uganda e Bangelan serem híbridos entre as espécies C. congensis e C. canephora.
Title in English
Chemical attributes in coffee species
Keywords in English
chemical compounds
Coffea
grouping
specie
Abstract in English
The objective of this work was to characterize seven coffee species and varieties from C. canephora and C. liberica presents in Germplasm Bank of the Instituto Agronômico in order to determine the possibility of its grouping as well its use on breeding of C. arabica and C. canephora species. A total of a hundred ten plants belonging to seven species and thirteen varieties were analysed for some chemical components of seeds (soluble solids, lipids, trigonelline, chlorogenic acids and caffeine). The results evidenced the existence of great variation among and within the materials analyzed, with values ranging from 24,12% to 31,00% for soluble solids; 6,61% to 17,49% for lipids; 0,32% to 2,15% for trigonelline; 2,58% to 6,38% for chlorogenic acids and 0,80% to 3,29% for caffeine, indicating that these variables can be used in selection of plants for the improvement of C. arabica and C. canephora. The results also showed that (i) soluble solids, lipids, chlorogenic acids and caffeine allowed to group C. canephora varieties, (ii) soluble solids, lipids and trigonelline permited discriminate C. liberica varieties.and (iii) lipids, chlorogenic acids, trigonelline and caffeine allowed to group coffee species. The C. canephora varieties did not show differences in relation to trigonelline while C. liberica varieties did not varied in relation to caffeine and chlorogenic acids. The hole group of obtained data for chemical variables analysed show that there is the possibility that Uganda and Bangelan varieties been hybrids between C. congensis and C. canephora.
 
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AdrianoAguiar.pdf (337.54 Kbytes)
Publishing Date
2006-01-26
 
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