Lesson 3.2.3 Fats Flashcards
What is the purpose of dietary fat?
We need dietary fat for energy storage, insulation, healthy cell membranes, absorption of fat-soluble vitamins, and protection of the nervous system.
How many calories are in one gram of fat?
One gram of fat has nine calories.
Name the sources of saturated fats.
Saturated fat comes from animal sources such as meat, eggs, and dairy products and plant sources such as tropical oils.
Name some sources of animal fats.
Animal fats include red meat, pork, dairy fats, butter, and cheese.
Name the tropical oils listed.
Tropical oils include coconut, palm, palm kernel, and cocoa butter.
What conditions are produced by the over consumption of saturated fats?
Consuming too much saturated fat has been linked to obesity and heart disease.
What is the structure of the fat molecule?
The fat molecule in saturated fats is packed with hydrogen atoms, leaving no more empty spaces for additional hydrogen molecules to attach. This makes it a stable fat.
Are unsaturated fats healthy fats?
These fats, while healthy, are best not heated, or at least heated only slightly.
Describe the molecular structure of the unsaturated fats.
The fat molecules in unsaturated fats have empty spaces where more hydrogen molecules can attach, leaving unsaturated fats more susceptible to molecular damage and rancidity.
Should unsaturated fats be heated?
No, these fats, while healthy, are best not heated, or at least heated only slightly.
Describe the molecular structure of monounsaturated fats.
“Mono” means “one,” so monounsaturated fats have just one bond and two empty spaces not taken up by hydrogen molecules.
Where are monounsaturated fats found?
Monounsaturated fats are found in most foods but mainly in vegetable and nut oils such as almond, olive, peanut, and canola.
What fats are liquid at room temperature?
Monounsaturated fats.
Are monounsaturated fats best for baking?
They are the second-best choice for cooking and baking as they are relatively stable.
What does the word “poly” mean?
The word “poly” means “many”.
Describe the molecular structure of polysaturated fats.
The polyunsaturated fats have many spaces not taken up by hydrogen molecules and as a result are less stable than the previously mentioned fats.
Should polyunsaturated fats be heated?
Never.
