Yeast Flashcards
1
Q
What are two main types of requirements for yeast?
A
nutrients and environment
2
Q
what are the nutrients requirement of yeast and where do they come from?
A
From rice +kōji: sugar, amino acids, peptides and vitamins.
From rice + water: magnesium, phosphorus and potassium
3
Q
what are the environmental requirements of yeast?
A
acidic and warmth
4
Q
how do brewers manage yeast?
A
yeast is managed using temperature and their access to nutrients
5
Q
what are the outputs of yeast?
A
from sugar metabolism, yeast produce ethanol, CO2 and heat.
yeast also produce aroma compounds, malic acid and succinic acid
