Yeast

Question 1

What are two main types of requirements for yeast?

Answer 1

nutrients and environment

Question 2

what are the nutrients requirement of yeast and where do they come from?

Answer 2

From rice +kōji: sugar, amino acids, peptides and vitamins.
From rice + water: magnesium, phosphorus and potassium

Question 3

what are the environmental requirements of yeast?

Answer 3

acidic and warmth

Question 4

how do brewers manage yeast?

Answer 4

yeast is managed using temperature and their access to nutrients

Question 5

what are the outputs of yeast?

Answer 5

from sugar metabolism, yeast produce ethanol, CO2 and heat.
yeast also produce aroma compounds, malic acid and succinic acid