Efeito de substâncias empregadas para remoção de cobre sobre o teor de compostos secundários da cachaça Effect of copper removing substances on the amount of seccondary compounds of sugar cane spirit

• Main Authors: Annete de J. Boari Lima, Maria das Graças Cardoso, Luiz Gustavo de L. Guimarães, José Maria de Lima, David Lee Nelson
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2009-01-01
• Series: Química Nova
• Subjects: beverage; Brazilian cachaça; copper adsorbents
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000400004

<abstract language="eng">High copper content is of great concern among producers of sugar-cane spirits who frequently use filters instead of cleaning the stills. This study compared the efficiency of activated carbon, ion-exchange-polymeric resin, and activated-carbon/iron-oxide magnetic composite for copper reduction without removing excessive organic compounds that are important for the beverage's quality. Resin was the most efficient copper adsorbent, removing fewer organic compounds. The composite also removed copper; however, it also removed large amounts of organic compounds. Activated carbon didn't remove sufficient copper to reduce its concentration to less than 5 g L-1, and it removed large amounts of higher alcohols and esters.