Produção de vinho de uvas dos cultivares Niágara Rosada e Bordô: análises físico-químicas, sensorial e recuperação de etanol a partir do bagaço
Carregando...
Data
2006-08-11
Autores
Barnabé, Daniela [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
A atividade vitivinícola brasileira tem como característica a pequena propriedade, o uso de mão de obra familiar e a produção de vinho de mesa comum. No entanto, poucos são os estudos realizados com vinho de mesa comum, apesar dos produtos originários de uvas americanas ou híbridas representarem mais de 80% do vinho produzido no país. Este trabalho foi realizado em conjunto com pequenos produtores de vinho do município de Lençóis Paulista/SP, que produzem vinhos de cultivares americanos (Niágara principalmente). A produção de vinho de mesa comum utilizando uvas Niágara Rosada e Bordô, a caracterização físico-química e sensorial da bebida, e a recuperação de etanol a partir do bagaço das uvas foram os objetivos deste trabalho. A vinificação foi conduzida com maceração das cascas, sendo que cada cultivar foi processado individualmente. Os tratamentos foram constituídos por cortes (misturas), em proporções variadas, de vinhos dos dois cultivares de uva. O bagaço obtido foi destilado em alambique simples, e em seguida redestilado para recuperação do etanol. A análise sensorial foi composta por teste de aceitação, utilizando-se escala hedônica, e análise descritiva quantitativa dos vinhos. A utilização do vinho de uva Bordô para cortes com vinho de Niágara Rosada permitiu a obtenção de uma bebida com características físico-químicas mais equilibradas em relação à acidez, teores de extrato seco e extrato seco reduzido, relação álcool/extrato seco reduzido, conteúdo de polifenóis e coloração. No teste de aceitação não houve diferença estatística significativa (p£0,05) na aceitação global, sabor e aroma dos diferentes tratamentos, embora a aceitação em IX relação à aparência tenha sido maior nos tratamentos com maior intensidade de coloração...
The Brazilian winegrowing activity is characterized by small properties, family labor, and table wine production. However, there are few studies on table wine, despite more than 80% of the country s wine production originates from American or hybrid grapes. This study was accomplished with small wine producers from Lençóis Paulista/SP who produce wine from American grapes (mainly Niagara). Table wine production from Niagara Rosada and Bordô grapes, their physicochemical and sensorial characterization, and the ethanol recovery from pomace were the aims of this study. Wine production was conducted with skin maceration with each variety being individually processed. The treatments were the varied proportional assemblage of both wines. Pomace was distilled in a simple copper still, and after redistilled for ethanol recovery. Sensorial analysis was performed by the acceptance test, using the XI hedonic scale, and quantitative descriptive wine analysis. The use of Bordô wine for assemblage with Niagara Rosada wine resulted in a beverage with more balanced physicochemical characteristics concerning acidity, dry extract content, and reduced dry extract, alcohol/reduced dry extract relation, polyphenol content, and coloration. There was no significant statistical difference (p£0,05) in the acceptance test as for global acceptance, flavor, and aroma of different treatments, although the appearance acceptance was higher for more intense coloration treatments. In quantitative descriptive analysis, 13 descriptive terms were chosen to describe similarities and differences between samples: red and golden-yellow coloration, transparency, grape, alcohol, artificial grape and acid aromas, acid taste, dry, grape juice and alcohol flavor, astringency, and body. The used descriptors were adequate for sample discrimination, except the alcohol aroma... (Complete abstract, click electronic access below)
The Brazilian winegrowing activity is characterized by small properties, family labor, and table wine production. However, there are few studies on table wine, despite more than 80% of the country s wine production originates from American or hybrid grapes. This study was accomplished with small wine producers from Lençóis Paulista/SP who produce wine from American grapes (mainly Niagara). Table wine production from Niagara Rosada and Bordô grapes, their physicochemical and sensorial characterization, and the ethanol recovery from pomace were the aims of this study. Wine production was conducted with skin maceration with each variety being individually processed. The treatments were the varied proportional assemblage of both wines. Pomace was distilled in a simple copper still, and after redistilled for ethanol recovery. Sensorial analysis was performed by the acceptance test, using the XI hedonic scale, and quantitative descriptive wine analysis. The use of Bordô wine for assemblage with Niagara Rosada wine resulted in a beverage with more balanced physicochemical characteristics concerning acidity, dry extract content, and reduced dry extract, alcohol/reduced dry extract relation, polyphenol content, and coloration. There was no significant statistical difference (p£0,05) in the acceptance test as for global acceptance, flavor, and aroma of different treatments, although the appearance acceptance was higher for more intense coloration treatments. In quantitative descriptive analysis, 13 descriptive terms were chosen to describe similarities and differences between samples: red and golden-yellow coloration, transparency, grape, alcohol, artificial grape and acid aromas, acid taste, dry, grape juice and alcohol flavor, astringency, and body. The used descriptors were adequate for sample discrimination, except the alcohol aroma... (Complete abstract, click electronic access below)
Descrição
Palavras-chave
Uva, Vinho e vinificação - Analise, Avaliação sensorial, Bebidas destiladas, Destilação - Industria - Subprodutos, Vitis labrusca, Enology, Quantitative descriptive analysis
Como citar
BARNABÉ, Daniela. Produção de vinho de uvas dos cultivares Niágara Rosada e Bordô: análises físico-químicas, sensorial e recuperação de etanol a partir do bagaço. 2006. xi, 93 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2006.