HmEc- Lipids

Elemental composition of lipids

Carbon, hydrogen, oxygen

Chemical structure of lipids

triglycerides CH3(CH2)nCOOH

Triglyceride composition

one glycerol molecule with three fatty acid molecules

What is this?

Triglyceride moelcule

What is this?

Fatty acid moleule

How is a triglyceride made?

When a glycerol molecule joins three fatty acids, resulting in the loss of three water molecules

Classification of lipids

Saturated fatty acids, mono-unsaturated fatty acids, poly-unsaturated fatty acids

Carbon quota saturated fatty acids

each carbons has full quota of hydrogen atoms

Carbon bonding in saturated fatty acids

no double bonds between carbon atoms

Saturated fatty acids state at room temperature

solid

Carbon quota mono-unsaturated fatty acids

not all carbons saturated with hydrogen

Mono-unsaturated fatty acids state at room temperature

soft

Carbon bonding of mono-unsaturated fatty acids

one double bonds between carbon atoms

Carbon quota poly-unsaturated fatty acids

not all carbons saturated with hydrogen

Carbon bonding of poly-unsaturated fatty acids

more than one double bond between carbons

Poly-unsaturated fatty acids state at room temperature

soft/liquid

Sources of saturated fatty acids

animal

Sources of mono-unsaturated fatty acids

plant/fish

Sources of poly-unsaturated fatty acids

plant/fish