Temperature: Effects on growth Flashcards
1
Q
In a cardinal temperature graph, what are the 3 point on the graph?
A
Minimum, Optimum, Maximum growth points
2
Q
Psychrophiles
A
Grow within low temps of -10 to 20C
3
Q
Psychrotrophs
A
Grow from 0 to 30C
4
Q
Mesophiles
A
Grow from 10 to 50C
5
Q
Thermophiles
A
Grow from 40 to 70C
6
Q
Hyperthermophiles
A
Grow from 70 to 110C
7
Q
What is the importance of temperature?
A
It controls microbial growth, food preservation, & disease
8
Q
Prodigiosin (Red pigment)
A
- Bioactive secondary metabolite (required for proper growth &
survival) - Gram positive & Gram negative bacteria (purple &pink)
- Bacteria produced & synthetic derivatives (leading to apoptosis
natural cell death & food colorant
9
Q
Serratia marcescens
A
- Pigment produced below 30°C
- Bread
- Trigger immune system (Antibodies & T cells)
