Quality Control of Oils

Question 1

mg KOH to neutralize free acids

Answer 1

Acid value (AV)

Question 2

T or F: there are low acid values in rancidified oils

Answer 2

F - high

Question 3

mg KOH to saponify the esters

Answer 3

Ester value (EV)

Question 4

mg KOH to neutralize free acids AND saponify the esters

Answer 4

Saponification value (SV)

Question 5

measure of oil unsaturation

Answer 5

Iodine value (IV)

Question 6

measure of OH groups

Answer 6

Hydroxyl value

Question 7

usually low except for ricinoleic acid

Answer 7

Hydroxyl value

Question 8

T or F: hydroxyl value is usually low

Answer 8

T

Question 9

hydroxyl value is usually low except for?

Answer 9

ricinoleic acid - has hydroxy grp

Question 10

measure of deterioration by oxidation

Answer 10

Peroxidation value

Question 11

Typical value is 10

Answer 11

Peroxidation value

Question 12

Peroxidation value:
Typical value?
for parenteral dosage forms?
virgin oils, e.g. olive?

Answer 12

10, lower - max 5, 20

Question 13

measure oxidation (in fish oils)

Answer 13

Anisidine value

Question 14

Determined photometrically (350 nm)

Answer 14

Anisidine value