yoghurt production Flashcards
1
Q
what is yoghurt made with
A
lactobacillus bulgaricus
2
Q
first the milk is p… to ?
A
pasteurised to kill bacteria
3
Q
the mixture is maintained at 46*C so
A
the bacterias enzymes are not denatured
4
Q
lactobacillus respires anaerobically producing
A
lactic acid
5
Q
how does lactobacillus respire
A
anaerobically
6
Q
what does lactic acid do
A
lowers the pH
coagulates the milk protein
gives yoghurt its texture and flavour
7
Q
steps to produce yoghurt
A
sterilise equipment
pasteurise milk by heating
add bacterial culture to
cooled milk
leave at 46C for 4 hours
take samples if yoghurt is ready
add flavour and colour
cool yoghurt to 5C to preserve
package yoghurt
