|
Types of active dry yeasts for winemaking
1) Saccharomyces cerevisiae: is the yeast normally
used for primary fermentation of must. Saccharomyces is the genus or family
name; cerevisiae is the name of the species, within which there are many different
strains having slightly different
characteristics (tolerance to alcohol, sugar and SO2; temperature range for
fermentation; nature of volatile compounds formed; sugar-to-alcohol yield;
ease of coagulation; etc):-
for white wines:-
Erbsloh Oenoferm Klosterneuberg: for high quality white wines.
IOC B-2000: recommended for aromatic white wines; Bacchus, Schonburger,
Ortega,
Siegerrebe, Huxelrebe, Muller-Thurgau, Scheurebe etc.
IOC BR-8000: produces a high level of glycerol and good length of flavour.
Lalvin 1116:
Lalvin B:
Uvaferm CEG: for high quality white wines, red wines; short lag
time,
good at low temperature 8 - 15
°C, gentle fermentation, non-foaming (high
protease
activity), good sedimentation/quick clarification.
Uvaferm CS2: for quality white wines (8 - 15
°C), red wines and rediluted concentrates
(15 - 25
°C); exceptionally good at low temperature, medium
lag time and speed
of fermentation, non-foaming.
SIHA 3: strain WET136:
Gervin B: CC: low temperature (10
°C).
Gervin 7: GE: 12
°C.
Gervin 5: GVN: 12
°C.
Gervin 1: Narbonne 7013: general purpose, good settling.
for red wines:-
Erbsloh Oenoferm Rouge: for high quality red wines.
IOC R-9001: for fruity early drinking light red wines.
IOC R-9002: for darker red wines of good structure and potential for bottle age.
Assists colour stabilitry.
Uvaferm CM: basic general purpose, particularly for red wines (15 - 35 °C), short lag time,
fast fermentation, average foaming.
Gervin 2: Davis 522 (Montrachet): for red Burgundy, rapid fermentation.
Gervin A: SF: for red Bordeaux.
2) Saccharomyces bayanus: has high tolerance to alcohol, so is used for restarting
stuck
fermentations, and for secondary fermentation to produce
Sparkling Wines:-
Erbsloh Seccoferm:
IOC 18-2007 (prise de Mousse): clean, fast fermenting, low pH, low
temperature
tolerance. Converts all sugars to alcohol without
undesirable secondary components.
Also good for primary fermentation of base wines intended
for Quality Sparkling Wine.
Lalvin EC-1118 (I.O.de Champagne):
Lalvin C-1108:
Uvaferm BC: 12 - 30
°C, for secondary fermentation or restarting stuck
fermentations,
or for slower primary fermentations; long lag time, complete fermentation at
slow
speed, easy fermentation with high sugar or alcohol content.
SIHA 4: strain CH158:
SIHA 5: strain CH420: Agglomerating special yeast for methode champenoise,
forms large
flakes after fermentation.
Gervin 3: Pasteur Institute (Davis 595).
Gervin 6: Davis 505 - good settling.
3) Schizosaccharomyces pombe: ferments malic acid, giving ethyl alcohol and
CO2.
Used for reduction of malic acid.
4) Saccharomyces beticus: Flor Sherry yeast.
Gervin 4: Davis 519 - ferments in SO2 levels of 25 - 50 mgm/100l (ppm).
5) Saccharomyces chevalieri: yeast common in red wine production.
6) Saccharomyces fructum: ferments at very low temperature.
7) Saccharomyces diastaticus: ferments dextrins and 'starch'.
www.winegrowers.info
|