Lab 8 Industrial Microbiology BIO250L
Student Name:
Access Code (located on the lid of your lab kit):
Experiment 1- Yogurt Preparation
Table 2: Yogurt pH Results
Sample pH
Step 2 7
Step 6 7
Step 10 6
Step 14 5
Step 15 4
Post-Lab Questions
1. Make a graph of the pH changes over the course of the experiment. How does the pH change at each
step? Why?
Yogurt shapes when microscopic organisms age the milk sugar, known as lactose, into lactic corrosive.
The lactic corrosive makes the milk more acidic (lower pH) making the proteins coagulate.
Insert graph here:
Student Name:
Access Code (located on the lid of your lab kit):
Experiment 1- Yogurt Preparation
Table 2: Yogurt pH Results
Sample pH
Step 2 7
Step 6 7
Step 10 6
Step 14 5
Step 15 4
Post-Lab Questions
1. Make a graph of the pH changes over the course of the experiment. How does the pH change at each
step? Why?
Yogurt shapes when microscopic organisms age the milk sugar, known as lactose, into lactic corrosive.
The lactic corrosive makes the milk more acidic (lower pH) making the proteins coagulate.
Insert graph here:
