Oilseeds Flashcards
(37 cards)
What is canola?
A type of rapeseed
____% of canola is genetically modified
90%
Fats are _____ at room temperature and oil are _____
solid, liquid
What are edible fats and oils a mixture of?
triacylgylcerols
What do triglycerides consist of?
unbranched carbon chain (2-28) with acid group at one end
Palmitic acid
C16:0 saturated
Stearic acid
C18:0 saturated
Oleic acid
C18:0 monosaturated
Linoleic acid
C18:2 polyunsaturated
Linolenic acid
C18:3 polyunsaturated (omega -3)
Eicosatetraenoic acid (EPA)
C20:5 (omega-3)
Docosahexaenoic acid (DHA)
C22:6 (omega-3)
Melting point ______ as the carbon chain length _____
increases, increases
Melting point _____ as the # of double bonds _______
decreases, increases
Does unsaturation or chain length have the most effect on melting point?
unsaturation
Stability ______ as the number of double bonds ______
decreases, increases
The dominant type of fatty acid in liquid oils
unsaturated
The dominant type of fatty acid in solid fats
saturated
Hydrogenation
a conventional process used to convert liquid vegetable oil into solid or semi-solid fats
Melting points of trans isomers are ______ than those of corresponding cis isomers
higher
Enzyme Interesterification
Process uses an enzyme to break and reform ester bonds
Canola Pretreatment
Cleaning and squashing the seeds
Canola oil expelling/extraction
Mechanical press to squeeze oil using friction
Canola refining process
remove all contaminants and enhances flavour/colour