REACTION OF LIPIDS (Activity 5) Flashcards
Fats and oils are the most abundant lipids found in nature.
TRUE
Fats contain higher percentage of ____ fatty acid while
oils have more of the ____ fatty acids.
saturated, unsaturated
Fats and oils are ____ mixtures
triacylglycerol
The chemical properties of triacylglycerol are typical with that of
esters and
alkanes.
Hydrolysis may occur making them acidic giving rise to volatile fatty acid
which undergoes ____ to give foul odor of volatile aldehydes and ketones..
oxidation
Types of rancidity
oxidative rancidity and hydrolytic rancidity
Arcolein is a test for
presence of glycerol or fat
Breaking down of large fat lipids globules into smaller globules, mainly accomplished by bile acids that is formed in small intestine
Emulsification
Oxidation and hydrolysis of fats and oils when exposed to air light and moisture resulting in unpleasant smell
Rancidity
Formation of reddish-brown solution at interface
Salkowski
Test for detection of cholesterol and sterols
Salkowski
Test for chemical estimation and detection of cholesterol
Liebermann-Burchard
Formation of emerald or dark green color solution
Liebermann-Burchard
Phenolphthalein gives off a ___ to an acid solution
colorless solution
Phenolphthalein gives off a ___ to base solution
pink color solution
Reaction of methyl orange to an acid solution
pink color
Reaction of methyl orange to a base solution
light yellow solution
solution remains colorless, no emulsion formed
negative, lipids are not present
cloudy white suspension forms at the top of the solution (tiny globules)
positive, lipids are present
alkaline ph methyl orange indicator
yellow
neutral ph methyl orange indicator
yellow
acidic ph methyl orange indicator
red-orange
red and blue remained same
randicity, neutral
red turns blue, blue remained same
randicity, base
red remained same, blue turns red
randicity, acid