High gravity batch and continuous processes for beer production : evaluation of...

• Author(s): Silva, Daniel Pereira da ; Brányik, Tomáš ; Dragone, Giuliano ; Vicente, A. A. ; Teixeira, J. A. ; Silva, João B. Almeida e
• Date: 2008
• Persistent ID: http://hdl.handle.net/1822/8246
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Beer; Fermentation; High gravity; Continuous; Immobilization; Sensorial analysis
• Document Type: Article
• Language: English

Description

This study deals with two innovative brewing processes, high gravity batch and complete continuous beer fermentation systems. The results show a significant influence of the variables such as concentration and temperature on the yield factor of the substrate into ethanol and consequently on the productivity of the high gravity batch process. The technological feasibility of continuous production of beer based on yeast immobilization on cheap alternative carriers was also demonstrated. The influence of process parameters on fermentation performance and quality of the obtained beers was studied by sensorial analysis. No significant difference in the degree of acceptance between the obtained products and some traditional market brands was found.