Free postage on all orders over £95.
Coopers Beer Kits now in stock
View our latest Special Offers
5% Discount on orders over £150.00
£3.50
A general purpose yeast suitable for country wines . Standard form of yeast used for brewing, can be used for beer or wine but more suited to beer and low alcohol wines.
9 in stock (can be backordered)
Saccharomyces Cerevisiae – The ‘only strain’ for Germanic aromatic white wines.
AW4 is noted for developing powerfully fragrant, full spice aromatic wines and is a perfect match for Gewurztraminer and also recommended for Sauvignon and Semillon where the Oenologist requires a positive aromatic esters contribution from the yeast.
AW4 is a good fermenter across the range 14 to 30ºC (57 -86ºF), low foam formation and medium to high glycerol. It will ferment up to 14.5% abv. ethanol providing the temperature is held within the 20 – 25ºC (68 -77ºF) range and the pH is above 3.0
ide range of applications and can also be used when making fruit wines.
Technical Info
Alcohol tolerance: 18% v/v
SO2 tolerance: High
Foaming: Medium
Low production of urea
Low production of fusel oils
Viability: >1.2x 10 CFU/g
Rehydration
During yeast manufacture, special processs are employed to promote very high leveles of the natural compound – Trehalose within the yeast.
Trehalose is a natural sugar produced within the yeast cells to protect itself during prolonged storage and stress conditions.
The very high levels of trehalose acheieved also remove the need for re-hydration before adding to must or wort – there is now no advantage in doing this even for high alcohol wines.
Acid reducing strain excellent for fruity white & blush country wines especially where residual sugars are desired. MA33 has the ability to metabolize between 30 and 35% of malic acid making this strain the perfect choice for country fruits which are naturally high in acid. Reducing malic acid will soften the wine and give a vin nouveau character for early consumption with a balanced palate.
MA33 is also noted for its production of fruity esters and fusel oils conferring fresh fruity character to the wine. There is an increased chance of Malolactic fermentation by lactic acid bacteria following MA33 fermentation. MA33 is a killer-sensitive strain. It is a good fermenter between 18 and 27OC (64 -80OF), with a rapid onset to fermentation although can exhibit a slow late fermentation profile and may require aeration after 10 – 12 days. Will ferment up to 14% ABV. ethanol providing the pH is above 3.2
for Higher Alcohol content A Specially formulated recipe containing Bentonite, Wine Yeast, Yeast Nutrient, Vitamins and Minerals. Used or making high quality wines, speedy fermentation and clearing.
