11. Milk fat
Major fatty acids of milk fat are palmitic (C16:0), stearic (C18:0) & oleic (C18:1) acids.
Contains appreciable amounts of short chain fatty acids (C4:0, C6:0, C8:0, C10:0).
Butyric acid (C4:0) is a characteristic fatty acid to milk fat.
Lauryl or Lauric acid fat
• Characteristic fatty acid is Lauric acid (Almost 40 - 50 % of total fatty acids).
• Low amount of unsaturated fatty acids and thus having low melting point.
• Contain moderate amount of C6:0, C8:0, C10:0 fatty acids.
• Obtained from certain species of palm, ex. Coconut.
Vegetable butters
• Obtained from the seeds of various tropical trees, ex cocoa.
• Characterized by their narrow melting range, i.e. due to arrangement of fatty acids in the triglyceraldehyde
• molecules.
• Widely used in the manufacture of confectionary products, ex. Chocolates, etc.
EDIBLE FATS/OILS
12. Saponifiable lipids: Glycerides, phospholipids,
fatty acids, cholesterol ester, etc.
Unsaponifiable lipids: Fat soluble vitamins,
sterols, hydrocarbons, carbonyls, etc.
14. High concentration of HDL (1.21 g/ml) counteracts atherogenesis (highly desirable lipoprotein)
LDL (1.063 g/ml) involved in altheroscelerosis (lethally dangerous lipoprotein)
In nearly all naturally occurring unsaturated fatty acids, the double bonds are in the cis configuration.
Trans fatty acids are produced by fermentation in the rumen of dairy animals and are obtained from dairy
products and meat.
They are also produced during hydrogenation of fish or vegetable oils.
Because diets high in trans fatty acids correlate with increased blood levels of LDL (bad cholesterol) and
decreased HDL (good cholesterol), it is generally recommended that one avoid large amounts of these fatty acids.
Unfortunately, French fries, doughnuts, and cookies tend to be high in trans fatty acids.
LDL, HDL, Trans fatty acids
15.
16. Saturated vs. Unsaturated
Dietary intake of PUFA (soya bean, sunflower, corn, fish oil) reduce plasma cholesterol level
saturated unsaturated
** Ghee, coconut
oil is poor source
of PUFA **