Production of sulphite and sulphide by low-and high-sulphite forming wine yeasts

✍ Scribed by R. Eschenbruch; P. Bonish

• Book ID: 104770187
• Publisher: Springer
• Year: 1976
• Tongue: English
• Weight: 379 KB
• Volume: 107
• Category: Article
• ISSN: 0302-8933
• DOI: 10.1007/bf00425343

✦ Synopsis

The influence of vitamin and cysteine supplementation on sulphite and sulphide formation, as well as on ATP sulfurylase activity, by two low-and two high-sulphite forming wine yeasts is examined using a defined synthetic fermentation substrate. The lowsulphite formers produce more sulphite in media lacking vitamins, whereas the high-sulphite formers produce less. One high-sulphite former has elevated ATP sulfurylase activity, but the other has activity similar to a low-sulphite forming strain. Only traces of sulphide are formed when the high-sulphite formers are grown with sulphate as the sulphur source, but considereable amounts are produced when cysteine is added to the medium. The low-sulphite formers produce H2S in the complete medium, and more is formed when vitamins are omitted.