Bidestilação em alambiques contendo dispositivos de prata e cobre e sua influência na qualidade da cachaça
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Data
2009-09-28
Autores
Cavalcanti, Aline Ferreira [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A contaminação da aguardente brasileira por íons de cobre já foi considerada um entrave à exportação da bebida e, mais recentemente, o seu possível envolvimento nas reações de formação do carbamato de etila, substância potencialmente carcinogênica têm sido constantemente citados como motivo para se substituir o cobre dos alambiques. Sabe-se porém, que o cobre, dado seu potencial catalisador, tem papel importante na qualidade sensorial das bebidas destiladas. As primeiras aguardentes obtidas em alambiques de aço inox, metal mais indicado para substituir o cobre dos alambiques, apresentaram um defeito sensorial devido à presença do dimetil sulfeto, cuja redução, no produto final, pode ser obtida pela introdução de dispositivos de cobre no interior dos capitéis de alambiques de aço inox. O processo de bidestilação também foi sugerido como alternativa para redução do teor de cobre contaminante e de outros compostos indesejáveis presentes na cachaça. Nesse sentido, foi objetivo do presente trabalho verificar a eficiência da utilização de outras formas de catalisadores, no caso a prata, e do processo de bidestilação na obtenção de um destilado com boa qualidade química e sensorial e sem apresentar a indesejável contaminação pelo cobre no destilado final. A prata é o metal nobre mais usado industrialmente e suas propriedades catalíticas indicam seu uso como um efetivo catalisador de reações de oxidação. A bidestilação é também uma prática normalmente adotada na produção de várias bebidas destiladas, como o uísque o conhaque e o rum e já tem mostrado efeitos positivos no caso da cachaça. Assim, amostras de cachaças produzidas a partir de vinhos comuns, porém, destiladas em quatro diferentes alambiques (de cobre, de aço inox, de aço inox contendo um dispositivo de cobre no interior do capitel, e de aço inox contendo um dispositivo de prata)...
The Brazilian sugar cane spirit contamination by copper has been considered an obstacle to export this beverage and more recently, its possible involvement in the ethyl carbamate formation, a potentially carcinogenic substance, has been consistently cited as a reason to replace the copper of pot stills. However, It is known that copper, due to its catalyst potential, plays an important role in the sensory quality of the distilled beverages. The stainless steel was indicated to substitute de copper and the first spirits produced in stainless steel equipments presented a sensory defect, after related to the presence of dimethyl sulphide. The reduction of this substance in the final product can be possible with the introduction of a copper device inside the head of stainless steel pot stills. The double distillation process has also been suggested as an alternative to reduce the level of copper contamination and other undesirable compounds present in “cachaça”. Accordingly, the aim of this study was to verify the efficiency of the use of other forms of catalysts like silver, and the use of the double distillation, in order to obtain a distillate with good chemical and sensory quality and without the undesirable copper contamination. The silver is the noble metal more used industrially and its catalytic properties suggest its use as an effective catalyst for oxidation reactions. The double distillation is also a common practice used in the production of several spirits such as whisky, brandy and rum, and it has shown positive effects in the case of “cachaça”. Thus, samples of “cachaça” produced from common wines, but distilled into four different pot stills (copper, stainless steel, stainless steel with the copper device, and stainless steel with a silver device), with same size and shape, using the process of simple (traditional) and the double distillation... (Complete abstract click electronic access below)
The Brazilian sugar cane spirit contamination by copper has been considered an obstacle to export this beverage and more recently, its possible involvement in the ethyl carbamate formation, a potentially carcinogenic substance, has been consistently cited as a reason to replace the copper of pot stills. However, It is known that copper, due to its catalyst potential, plays an important role in the sensory quality of the distilled beverages. The stainless steel was indicated to substitute de copper and the first spirits produced in stainless steel equipments presented a sensory defect, after related to the presence of dimethyl sulphide. The reduction of this substance in the final product can be possible with the introduction of a copper device inside the head of stainless steel pot stills. The double distillation process has also been suggested as an alternative to reduce the level of copper contamination and other undesirable compounds present in “cachaça”. Accordingly, the aim of this study was to verify the efficiency of the use of other forms of catalysts like silver, and the use of the double distillation, in order to obtain a distillate with good chemical and sensory quality and without the undesirable copper contamination. The silver is the noble metal more used industrially and its catalytic properties suggest its use as an effective catalyst for oxidation reactions. The double distillation is also a common practice used in the production of several spirits such as whisky, brandy and rum, and it has shown positive effects in the case of “cachaça”. Thus, samples of “cachaça” produced from common wines, but distilled into four different pot stills (copper, stainless steel, stainless steel with the copper device, and stainless steel with a silver device), with same size and shape, using the process of simple (traditional) and the double distillation... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Bebidas destiladas, Cachaça, Cachaça - Qualidade, Bidestilação, Alambique - Cobre, Alambique - Aço inox, Cachaça, Double distillation
Como citar
CAVALCANTI, Aline Ferreira. Bidestilação em alambiques contendo dispositivos de prata e cobre e sua influência na qualidade da cachaça. 2009. 95 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Farmacêuticas, 2009.