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Research Paper

1390 words - 6 pages


One Percent vs. Two Percent Milk

University of Maryland University College

There has always been an argument in my household regarding the varying degrees of milk and the differences in taste. According to John Bower (1995), “sensory evaluation is a basic tool in the practice of food science and is widely used in research and industry”. The data formulated from the sensory evaluation can come in many forms but the information is usually produced by verdicts of human subjects that form a taste panel. There is importance placed on the conclusions drawn from these sensory ...view middle of the document...

The experiment was conducted over a holiday weekend with ten different trials. The cartons of milk were purchased the day before the experiment and placed in the refrigerator for the same amount of time.
Random Order
Each trial was prepared in random order and in pairs. This allowed exclusive control over the distribution.
Temperature Control
There was control over the temperature during this experiment. Both types of milk were purchased the same evening and also placed in the refrigerator the same evening. Even within the refrigerator the cartons of milk were placed side by side without anything immediately around to ensure that that milk was cooled evenly. Additionally, both cartons of milk were removed from the refrigerator at the same time to again control the temperature of the experiment.
In an effort to control this experiment both types of milk were purchased at the exact same store and they were from the exact same producer. It was also important to try to control the age of the product so both milk cartons had the exact same sell by date. All the Dixie cups also had the exact same quantity within each cup.
Data Collection
One half gallon of one percent Giant brand milk was purchased along with one half gallon of two percent Giant brand milk. The other materials included twenty one Dixie cups for the taste testing along with paper and pencil for recording the results.
The day of the experiment was Saturday July 3, 2010 in the early morning prior to breakfast. The following are step by step instructions on how to conduct this experiment:
1. Start off by selecting a participant that claims to be a self-proclaimed expert in distinguishing between the different types of milk.
2. Purchase and/or gather all the following materials: one percent milk, 2 percent milk, Dixie cups, paper, pencil, and water.
3. Discuss the procedure with the participant so they have a clear understanding on the steps and expectations of their participation.
4. Send the participant to another room to ensure control over the experiment.
5. Line up the Dixie cups in pairs in two separate rows. The rows should equal to ten which is the number of trials that will be conducted.
6. Number each Dixie cup in a row either one or two.
7. Create an answer sheet that will show the type of milk that will be placed into each Dixie cup.
8. Take an additional Dixie cup and fill this with water and place on the table off to the side.
9. Next take both type of milk from the refrigerator and pour about halfway into each Dixie cup as denoted on the answer sheet.
10. Once this has been completed you can ask the participant to return to the room and take a seat at the table.
11. Have the participant clean their palate with a swish of water. This should also be done after each row of milk has been completed.
12. The participant can begin with the first row and the first Dixie...

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