Abstract
The yeast K1 killer toxin gene was integrated into the genome of laboratory and commercial wine yeasts by gene replacement technology that generated recombinants containing only yeast DNA. Integration of the K1 killer gene into two K2 wine yeasts generated stable K1/K2 double killer strains which have a wider spectrum of killing and a potential competitive advantage over other sensitive and killer strains of Saccharomyces cerevisiae in wine fermentations. The fermentation characteristics of several killer integrant strains were examined in microvinification tests. The results indicate that wine fermentations and products from such yeasts can be similar to those obtained from fermentations by the parental strains.
- Received April 1989.
- Copyright 1990 by the American Society for Enology and Viticulture
Sign in for ASEV members
ASEV Members, please sign in at ASEV to access the journal online.
Sign in for Institutional and Non-member Subscribers
Log in using your username and password
Pay Per Article - You may access this article (from the computer you are currently using) for 2 day for US$10.00
Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.