Traditional second fermentation method yeast starter culture and prise de mousse optimization with Inactive Dry Yeast and Saccharomyces cerevisiae strains IOC 18-2007 and IOC-FIZZ

Identifier:  TFM:1536

Handle: https://hdl.handle.net/20.500.11797/TFM1536

Authors:  Rubiano Castro, Daniel

Abstract:
Yeast starter cultures of IOC-18-2007 and IOC-FIZZ were performed via 3 different protocols (P1: CIVC, P2: 24 H and P3: 5 H) and an IOC’s Inactive Dry Yeast absence and presence were followed by density kinetics and inoculated. Significantly desired density kinetics were found in 18-2007 IDY (+). Contrarily, significant final pressure values after second fermentation indicated lower pressure for IDY (+), being the best protocol P1: CIVC and performance P1 18-2007 IDY (-). Total yeast sterol and fatty acid analysis at the end of the starter culture exhibited significantly better membrane adaptation in Protocol 1, 18-2007, and IDY (+).