Lipids
Nilma AKRAM AKHSS Gahkuch 1
lipids fsc.pptx Page 1 of 50
, 1.5.1 define lipids
1.5.2 describe the properties of triglycerides (triacylglycerols),
phospholipids, terpenoids (terpenes, carotenoids and steroids) and waxes
with examples;
1.5.3 differentiate between saturated and unsaturated fatty acids; *
1.5.4 illustrate the condensation and hydrolysis of a triglyceride molecule;
1.5.5 illustrate the molecular structure of triglycerides, phospholipids,
terpenoids (terpenes, carotenoids and steroids) and waxes;
Nilma AKRAM AKHSS Gahkuch 2
lipids fsc.pptx Page 2 of 50
, 1.5.1 Define lipid
Term coined by Bloor in 1943 for those biomolecules which
were insoluble in water but soluble in organic solvents
Heterogeneous group compounds (fats, oils, waxes, steroids….)
Fats, oils, waxes, cholesterol and steroids
Hydrophobic compound ( water insoluble)
Soluble in organic solvent (acetone, ether, alcohol,
chloroform and benzene)
Composed of C, H and O.
Less oxygen ratio than carbohydrates
Tristearin (C57H11O6)
Double amount of energy than carbohydrates
Nilma AKRAM AKHSS Gahkuch 3
lipids fsc.pptx Page 3 of 50
, Lipids
Define lipids
Chemical nature of lipids
lipids is the collective name for variety of organic compounds such as
fats, oils, waxes and fat like molecules ( steroids) found in the body.
Lipids cannot be defined precisely because their chemistry is so
variable, but we can say that true lipids are formed by condensation
reactions between fatty acids and glycerol.
Therefore, it is defined as a heterogeneous group of organic
compounds. Which are insoluble in water ( hydrophobic ) mostly
made up of non polar C-H bonds ( hydrocarbon) but soluble in
organic solvent such as acetone, alcohol, and other etc.
Nilma AKRAM AKHSS Gahkuch 4
lipids fsc.pptx Page 4 of 50
Nilma AKRAM AKHSS Gahkuch 1
lipids fsc.pptx Page 1 of 50
, 1.5.1 define lipids
1.5.2 describe the properties of triglycerides (triacylglycerols),
phospholipids, terpenoids (terpenes, carotenoids and steroids) and waxes
with examples;
1.5.3 differentiate between saturated and unsaturated fatty acids; *
1.5.4 illustrate the condensation and hydrolysis of a triglyceride molecule;
1.5.5 illustrate the molecular structure of triglycerides, phospholipids,
terpenoids (terpenes, carotenoids and steroids) and waxes;
Nilma AKRAM AKHSS Gahkuch 2
lipids fsc.pptx Page 2 of 50
, 1.5.1 Define lipid
Term coined by Bloor in 1943 for those biomolecules which
were insoluble in water but soluble in organic solvents
Heterogeneous group compounds (fats, oils, waxes, steroids….)
Fats, oils, waxes, cholesterol and steroids
Hydrophobic compound ( water insoluble)
Soluble in organic solvent (acetone, ether, alcohol,
chloroform and benzene)
Composed of C, H and O.
Less oxygen ratio than carbohydrates
Tristearin (C57H11O6)
Double amount of energy than carbohydrates
Nilma AKRAM AKHSS Gahkuch 3
lipids fsc.pptx Page 3 of 50
, Lipids
Define lipids
Chemical nature of lipids
lipids is the collective name for variety of organic compounds such as
fats, oils, waxes and fat like molecules ( steroids) found in the body.
Lipids cannot be defined precisely because their chemistry is so
variable, but we can say that true lipids are formed by condensation
reactions between fatty acids and glycerol.
Therefore, it is defined as a heterogeneous group of organic
compounds. Which are insoluble in water ( hydrophobic ) mostly
made up of non polar C-H bonds ( hydrocarbon) but soluble in
organic solvent such as acetone, alcohol, and other etc.
Nilma AKRAM AKHSS Gahkuch 4
lipids fsc.pptx Page 4 of 50
