THE LIFE OF YEAST How much do you know about fermentation?

Mr. Walker has bought a new factory to start producing ethanol. The factory has several types of rooms and as Mr. Walker does not want to pay a lot of money for reconstruction, so he needs to find out which room is the best for fermentation process. Room U.1, in the basement below ground level, has permanent low temperature (0-5 °C); room 1.1, on the first floor, is usually 15-20 °C; on the same floor there is a room 1.7 above the gas boiler, which is from the boiler heated up to 35-40 °C. Mr. Walker also believes that satisfied employees are loyal to company and contribute to better quality of product, so recently he has had large sauna built (room 0.A). This sauna keeps temperature 65-75 °C when in operation, so Mr. Walker considers whether to use it for fermentation as well.

Help Mr. Walker to find out which room is the best for the most efficient production of ethanol.