The document summarizes opinions on the taste of cow and goat milk from naked eye observations and describes a lab experiment comparing pasteurized and UHT milk. Four students observed that cow milk has a sweet, soft taste and is liquid and not fatty, while goat milk has a bitter, sour taste and is more viscous. The lab experiment used equipment like beakers and pipettes to introduce acid to pasteurized and UHT milk to determine that pasteurized milk spoils due to bacterial acid rather than bacteria itself, while acid can make UHT milk appear normal again.

1. NAKED EYE
Paula Bassets
Manel Martinez
Júlia Puigvert
Salimú Sumbundú

2. Cow Milk
• Their flavour is sweet and soft (light).

3. Cow Milk
• Their taste is sweet and soft. It’s very
similar like the smell.

4. Cow Milk
• We think that the view is very liquid and
watery. It doesn’t seam really fatty.

5. Goat Milk
• Their flavour is acider than the cow milk.

6. Goat Milk
• The taste of the goat milk is bitter and sour.

7. Goat Milk
• We think that the view is more
consistencier than the Cow Milk.

8. LABORATORY
EXPERIMENT

9. Equipment
•
•
•
•
•
Baker
Erlenmayer Flask
Test tubs
Thistle tube
Dropping pipette

10. TEORIC INTRODUCCTION
There are two tipes for treatment the
milk:
*The first one is the Pasteuritzation
*The second one is the UHT
The above treatments use the heat for
elliminate the bacterium.

11. Pasteuritzation

12. UHT

13. Experiment
• We can confirm that the Pasteuritzate milk
doesn’t damage because of bacteria. It
damages because of acid that the
bacterium produces.
• We add an acid into the UHT milk, and
then it transforms to a normal milk,
because the acid damage it.

14. THE END