Intolerance In Milk

Background Information

Nowadays, it is common to find people around us are suffering with the lactose intolerance; babies are able to digest lactose because they can produce lactase while many adults are suffering the inability to digest lactose. As the research illustrates: “when lactose moves through the large intestine without being properly digested, it can cause uncomfortable symptoms such as gas, belly pain, and bloating” (Lactase enzyme lab, 2017), so the effects from lactose intolerance lead to the need for the enzyme to add into the milk. In order to let the people with lactose intolerance can still drink the milk in their daily lives, some milk companies develop a special kind of milk which is added with the lactase and this milk

The glucose concentration in the regular milk sample is measured by using the test strip.

The directions that came with the glucose test strips are followed; a glucose test strip is dipped into the milk sample.

The time is counted down for 30 seconds in terms of the strip directions.

The color of the strip is compared after dipping it in the milk with the color-coded key on the side of the bottle to determine the concentration of glucose in the milk.

The glucose concentration in the lactose-free milk sample is measured by using the test strip.

The results are recorded in the lab notebook in the same section as the experiment of glucose and water.

One drop of the lactase solution is added into the regular milk sample which is the one contains the lactose.

The milk is warmed by conveying the heat from the hands for 2 minutes.

The glucose test is repeated by using a new test strip.

The result is recorded in the prepared lab notebook.

One drop of the lactase solution is added into the lactose-free milk sample.

The milk is warmed by rolling the cup back and forth in hands for 2

Based on the data which was collected, the glucose concentration of regular milk was 0-2.8mmol/L while the glucose concentration of the lactose-free milk was 14.0-28.0mmol/L. The data clearly showed that a higher lactose concentration was contained in the lactose-free milk compared to the glucose concentration of the regular milk. After the enzyme lactase was added into the lactose-free milk and the regular milk, the glucose concentration was measured again by using the glucose strips. The glucose concentration of the regular milk increased: the glucose concentration of the regular milk became 5.6-14.0mmol/L because of the lactose. Besides, the glucose concentration of the lactose-free milk with the lactase was close to the glucose concentration without adding the lactase, but not exactly the same. If we were able to do our experiment again, we would prepare more urinalysis strips so that we could do the experiments for more than one time which could reduce the inaccuracy of the