Description
1. Direct add yeast in fermentation tank (batch fermentation):
Each liter of mash is inoculated with 0.25-0.3g of dry yeast, and the initial cell count of fermentation mash reaches 5million/ml.
Characteristics
Simple operation, simplified flow
Favorable for stable control
The probability of bacterial infection is reduced
2.Propagation in culture tank:
When the equipment and process allow, on the basis of strictly controlling bacterial infection and providing the yeast with the required nutrition, inoculate to ferment after culturing for 8-10 hours, so as to relatively reduce the yeast consumption. In consideration of the aging and degeneration of yeast in the culture process, the optimal inoculation replacement cycle shall be 72 hours.
Nutrition required by yeast culture:
Nitrogen source, phosphor source, magnesium ion, zinc ion,
