Lipids - Chemistry of lipids

11 important questions on Lipids - Chemistry of lipids

What are 95% of the lipids we eat?

triglycerides phopholipids and sterols

When is something a oil and when is it a fat?

fats: solid at 20 degrees celcius
oil: liquid at 20 degrees celcius

What are fatty acids?

A chain of hydrogenated carbon atoms connected to a carboxyl group
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What are the 3 different properties of fatty acids?

  1. chain length: ranches form 2 to 24 carbon atoms
  2. Degree of unsaturation: number of double bonds.
    Mono-unsaturated fatty acids: 1 double bonds
    Poly-unsatuated fatty acids: at least 2 double bonds
  3. Point of satturation: where double bonds are loccated.

How are fatty acids named with ∆?
Give an expample for a fatty acid with 18C, and 2 double bonds. First double bond at place 6 and second at 12.

Counts form the carboxyl (biginning) and gives all double bonds.
18:2∆6,12

What is palmitic acid?

C16:0

mayor component of palm oil and olive oil

What is linoleic acid?

C18:2 mayer component of sun flour oil

What is linolenic acid?

C18:3 mayer compounent of soy been oil.

What is the chain length of the fatty acids found in coco oil?

8 to 12

What is the mayor chain lengt found in fish oil?

C20 to C22.

What is the benefit of saturated fatty acids?

More stalbe, less prone to oxidation.

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