PROPERTIES OF LIPIDS Flashcards
Lipids may be either ________ or __________________ at room temperature.
a. liquids
b. non-crystalline
solids
Pure fats and oils are _____, ____, and ______.
colorless, odorless, and
tasteless
They are energy-rich organic molecules; ________ in water.
insoluble
Soluble in organic solvents like _______, ______, _______, _______ etc.
alcohol
chloroform
acetone
benzene
_____________ have high proportions
of saturated fatty acids
Solid triglycerols (Fats)
___________ have high proportions
of unsaturated fatty acids.
Liquid triglycerols (Oils)
Triglycerols like any other esters react with
water to form their carboxylic acid and
alcohol – a process known as ________?
________ is a common form of a chemical reaction where water is mostly used to break down the chemical bonds that exists between a particular substance.
hydrolysis
Triacylglycerols may be hydrolyzed by several
procedures, the most common of which
utilizes alkali or enzymes called ________.
lipases
Alkaline hydrolysis is termed ____________ because one of the products of the hydrolysis is a soap, generally sodium or potassium salts
of fatty acids.
saponification
The carbon-carbon double bonds in unsaturated fatty acids can be _________
by reacting with hydrogen to produce saturated fatty acids.
hydrogenated
a type of chemical reaction that involves the replacement of a halogen atom with another substance, wherein it ends up as a part of that substance or a compound.
halogenation
Unsaturated fatty acids, whether they are free or combined as esters in fats and oils, react with _________ by addition at the double bond(s).
halogens
Halogenation reaction results in the _______
decolorization of the halogen solution.
The term ________ is applied to any fat or oil that
develops a disagreeable odor.
rancid
__________ and ______ _______ are responsible for causing
rancidity.
a. Hydrolysis
b. oxidation reactions
