classification of fats by group characteristics

Question 1

what are the 7 groups of fats

Answer 1

milkfat group
lauric acid group
oleic-linoleic group
linolenic group
animal fat depot group
marine oil group
erucic acid group

Question 2

what are some distinguished features of milkfat group

Answer 2

high levels of long chain sat fatty acids, unique and substencial portion of short chain

Question 3

what is the fatty acid composition for cow’s milk fat

Answer 3

25-32% palmitic acid
10-12% stearic acid
30-40% oleic acid
4-15% butyric acid

Question 4

what distinguish lauric acid group

Answer 4

by their content of lauric acid (C12) which can count for 40-50% of the total fatty acid and most of the fatty acids are saturated

Question 5

lauric acid are more oil or fats in room temp

Answer 5

oils in the lauric acid group are resistant to oxidative rancidity due to their low degree of unsaturation

Question 6

which group is the Most interest

Answer 6

oleic-linoleic

Question 7

what % of saturated fatty acids make up oleic and linoleic acid

Answer 7

20%

Question 8

linolenic acid is particularly reactive and readily oxidized?

Answer 8

true

Question 9

what is a reversion

Answer 9

relatively rapid transition from a bland, tasteless oil shortly after processing to grassy, hay like and then fishy flavour

Question 10

what are some caracteristics of animal fat depot group, for example their melting point and their structure

Answer 10

they have a high melting point and they are made with:
50-60% oleic and linoleic acid
3–40% palmitic and stearic acid

Question 11

marine oil group contains which type of fatty acid

Answer 11

high long chain unsaturated fatty acids C16-C22

Question 12

uricic acid group - give an example of the oil and it is good or not good to our health

Answer 12

Rapeseed oil it is not good, it contains 40-50% of erucic acid which is considered a health hazard