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Quality improvement and geographical indication of cachaça (Brazilian spirit) by using locally selected yeast strains

2016; Oxford University Press; Volume: 121; Issue: 4 Linguagem: Inglês

10.1111/jam.13216

1365-2672

Edilene Alves Barbosa, Magalhães Teixeira Souza, Raphael Hermano Santos Diniz, Fernanda Godoy-Santos, Fábio Faria‐Oliveira, Lygia F. M. Correa, Florencia Álvarez, Maurício Xavier Coutrim, Robson José de Cássia Franco Afonso, Ieso M. Castro, Rogélio Lopes Brandão,

Phytochemicals and Antioxidant Activities

In order to improve the quality and to create a biological basis for obtainment of the protected denomination of origin (PDO), indigenous yeast were isolated and characterized for use in Salinas city (the Brazilian region of quality cachaça production).Seven thousand and two hundred yeast colonies from 15 Salinas city distilleries were screened based on their fermentative behaviour and the physicochemical composition of cachaça. Molecular polymorphic analyses were performed to characterize these isolates.Two Saccharomyces cerevisiae strains (nos. 678 and 680) showed appropriate characteristics to use in the cachaça production: low levels of acetaldehyde and methanol, and high ethyl lactate/ethyl acetate ratio respectively. They also presented polymorphic characteristics more closely related between themselves even when compared to other strains from Salinas.The application of selected yeast to cachaça production can contribute for the improvement of the quality product as well as be used as a natural marker for PDO.This study suggests that the use of selected yeast strains could contribute to obtain a cachaça similar to those produced traditionally, while getting wide acceptation in the market, yet presenting more homogeneous organoleptic characteristics, and thus contributing to the PDO implementation.