Brewery Containments And Biological Control

Question 1

Define “Beer spoilage”

Answer 1

Any change which results in an uncharacteristic flavor, aroma, or appearance.

Question 2

What characteristics make beer more resistant to spoilage bacteria?

Answer 2

pH, alcohol, co2

Question 3

Name 3 gram positive spoilage bacteria

Answer 3

Lactobacillus
Pediococcus
Lactococcus

Question 4

Define “wild yeast” in a brewery

Answer 4

Any unintended yeast in a beer

Question 5

List 4 general detection methods for beer spoilage organisms.

Answer 5

Microscopy
Selective Media
Catalase Test
PCR