We started with the following supplies:
Milk, Powdered Lactase Enzyme, Microtubes, glucose test strips and Vinegar. |
In this case the milk tested NEGATIVE for Glucose. This is because the sugar found in milk is LACTOSE. The Glucose and Galactose that make up glucose have not been separated yet. |
Finally, we wanted to see the effects of pH on enzyme activity. This time you added some Vinegar (an acid) to the lactase.
Depending on the concentrations of acid, lactase, and milk.... you had a variety of results. Some of yours ended up having MORE glucose in them, others the reaction didn't happen at all and some of you it worked less.
This was all indicated by different color changes on the test strips.
What this tells us is that pH DEFINITELY effects how well the enzymes work!!
More tomorrow on enzyme activity.... this time we'll look at temperature.
GREAT JOB TODAY!!!!!
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