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Saccharomyces Cerevisiae – For sweet white/blush and dessert wines. Produces high levels of desirable congeners during fermentation including aromatic thiols, imparting rich fruity aromatics, full body and ‘tropical’ flavor characteristics. CY17 is also noted for high glycerol formation, further enhancing sweetness.
This is a slow fermenter compared to all other strains in the Mangrove Jack’s range, typically taking up to 21 days to ferment table wines and up to 35 days for dessert wines. CY17 prefers a constant temperature in the 22 – 26ºC (72 -78ºF) range. Dropping the temperature below 15ºC (59ºF) two thirds of the way through fermentation will arrest fermentation making CY17 suitable for producing naturally sweet wines (both potassium sorbate and metabisulphite must be used to prevent re-fermentation).
CY17 is also excellent for sweet sparkling wines, but CL23 must be employed for the bottle fermentation stage.
Avoid free SO2 levels above 50 ppm and ensure pH above 3.2, CY17 is a delicate strain that must be treated with some respect. Pay particular attention to sterile winemaking conditions and a warm start to fermentation otherwise risk of bacterial contamination is increased. CY17 will happily ferment up to 15% abv. ethanol if such conditions are employed
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
This strain is known for it’s exceptional reliability and it’s ability to consistently deliver fresh, clean, crisp and robust ciders. It is a very low foaming strain that will ferment between 10 – 35°C, adhering to the ideal fermentation for cider; measured and steady. The flavour characteristics confered by this strain are neutral and clean meaning that the natural flavour of the fruit will be the prominant taste on the palate, guaranteeing a satisfying, well balanced cider. Overall, a classic cider yeast that will ferment to dryness with a delicious, powerful and refreshing fruity finish, perfect for making your own traditional European cider.
Technical Information
Gluten Free
Alcohol tolerance: 15% v/v
SO tolerance: High
Foaming: Low
Low production of urea
Low production of fusel oils
Viability: >1.0x 10 CFU/g