Difference between revisions of "Lipid"

Revision as of 10:57, 16 September 2018

Lipids are molecules found in fats and oils.

Oil is better for us than fat, but we need some of both.

If we eat too much fat and oil then we can become obese.

These foods contain a lot of fats and oils.

Meat contains useful fat for our diets, but too much can lead to heart disease.	Fish is a very healthy source of oils in our diet.	Nuts are a healthy source of oils.	Butter is full of fat and we shouldn't eat too much. Butter is found in cakes and cookies.	Cooking oil is used to fry our food causing it to have a lot of oil inside it. A small amount is healthy but too much is bad for us.

Adding lipids to paper can turn the paper translucent.

1. Take a small sample of food.

2. Wipe it on a piece of paper.

3. Hold the paper up to the light.

4. If the paper has turned translucent the food contained fat.


There are two patches where fat has been asborbed by the paper.

1. Take a small sample of food.

2. Place the food in ethanol and mix by shaking or stirring.

4. Add the clear solution to some water.

5. If lipids are present then a white emulsion will appear.

@@ Line 25: / Line 25: @@
 ===Testing For Lipids===
 : Adding lipids to paper can turn the paper translucent.
-=====Method=====
+=====The Paper Test Method=====
 : 1. Take a small sample of food.
 : 2. Wipe it on a piece of paper.
@@ Line 37: / Line 37: @@
 | style="height:20px; width:600px; text-align:center;" |There are two patches where fat has been asborbed by the paper.
 |}
+=====The Alcohol Emulsion Test Method=====
+: 1. Take a small sample of food.
+: 2. Place the food in [[ethanol]] and mix by shaking or stirring.
+: 3. [[Filter]] the [[mixture]].
+: 4. Add the clear [[solution]] to some water.
+: 5. If lipids are present then a white [[emulsion]] will appear.