WhiteArome
SIHA WhiteArome is a newly selected pure yeast with special flavour formation for grape varieties such as Riesling, Pinot Blanc, Pinot Gris, Gutedel, and Muscat.
Technical Specifications
SIHA WhiteArome Yeast is a selected yeast strain with pronounced grape-specific aroma formation (higher alcohols and their esters) in white wines. The yeast strain is characterized by low formation of fermentation by-products such as SO2, acetaldehyde, pyruvic acid, and α-ketoglutarate. SIHA WhiteArome yeast suppresses undesired wild yeasts and bacteria through rapid start of fermentation and yeast cell multiplication.
The yeast can tolerate SO2 quantities up to 2.28 g/fl oz (50 mg/l).
SIHA WhiteArome yeast can produce up to 14% alcohol by volume. The practical alcohol yield is approximately 47% of the sugar content. For each lb (kg) of sugar fermented, approximately 247 kJ (59 kcal) of heat is released.
Features and Benefits
The specific advantages of SIHA WhiteArome yeast:
- Reliable full fermentation at fermentation temperatures between 64 – 68 °F (18 – 20 °C)
- Harmonic white wines with good fruit aromatics
- Preservation of typical grape aromas
- Average yeast nutrient requirements
Product Applications
As a basic rule, musts and mashes should be inoculated with SIHA WhiteArome yeast as early as possible. Longer maceration times promote uncontrolled propagation of wild yeast and undesired bacteria.
These quantities are guide values and should be adjusted to the individual conditions (healthiness of the grapes or fruit, yeast nutrients, etc.). The fermentation range is between 54–68°F (17–25°C). The optimum fermentation temperature is between 64–68°F (18–20°C).
SIHA WhiteArome yeast is best stirred into a 10:1 must/water mixture at 95–99°F (35–37°C), stirred again after approximately 2–3 hours, and added to the must. Mixing is unnecessary if the must is pumped onto the yeast batch.
The addition of inactive yeast nutrients during rehydration promotes the formation of active yeast cells and improves the fermentation performance of the yeast. We recommend a SIHA Proferm Plus combined yeast nutrient dosage of 1.7 lb/1,000 gal (20 g/hl).
