Production of Yeast & Fermenters Flashcards
What is the purpose of paddles in a fermenter?
It is to distribute heat and nutrients evenly.
How is the temperature controlled in a fermenter?
The cooling jacket is used to control the contents at optimum temperature.
What condition should be controlled in a fermenter?
Nutrients, so all the micro-organisms get them evenly.
What is a product which can be produced in a fermenter?
Yoghurt.
What is the bacterium produced when making yoghurt?
Lactobacillus.
What is the acid produced when making yoghurt?
Lactic acid.
Why does a fermenter have a filtered air supply?
To make sure all the cells respire aerobically and remove other micro-organisms.
Why is the temperature recorder connected to the liquid and the cooling jacket?
It is to maintain the temperature of the contents in the fermenter, and it is also to make sure the cooling jacket is cold enough to have optimum temperature.
What is the word equation for anaerobic respiration in yeast?
Glucose—> Ethanol + Carbon Dioxide
Why should you sterilise bottles for beer production and how can it be done?
It is done by boiling distilled water and its done to remove bacteria.
What is the enzyme that digests the starch in barley?
Amylase.
Name the substance produced when starch is digested?
Glucose molecules.
