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Flashcards in Lab - Determination of Fat Deck (15)
0

Lipid material may be effectively extracted by all except
A. Alcohol
B. Acetone
C. Ether
D. Water

D

1

Which is not used to extract free lipid constituents?
A. Diethyl ether
B. Light petroleum fractions
C. Alcohol

C

2

Which is used to extract bound lipid constituents?
A. Diethyl ether
B. Light petroleum fractions
C. Alcohol

C

3

Werner-Schmid, Roese-Gottlieb, Bolton/Bailey Walker & Soxhlet are ____ methods of determining fat
A. Gravimetric
B. Volumetric
C. Colorimetric
D. Metric

A

4

Bolton/Bailey Walker & Soxhlet are ____ gravimetric methods of determining fat
A. Solubilization-extraction
B. Direct solvent extraction
C. Color extraction
D. Numerical exraction

B

5

Bolton/Bailey Walker & Soxhlet - differentiate

Bolton involves continuous extraction
Soxhlet involves intermittent extraction

6

In solub-extraction method for acid, material heated in boiling water with___ to breakdown protein and fat
A. H2SO4
B. HI
C. HCl
D. Any of the 3

C

7

In solub-extraction method (alkaline) material heated with NH3 and alcohol in __ envt
A. Hot
B. Cold
C. Lukewarm
D. Any of the 3

B

8

A. Direct solvent
B. Solub-extact (acid)
C. Solub-extract (alkaline)

Which is best for tea?

A

9

Another name for solub extract, acid way

Werner-Schmid process

10

A. Direct solvent
B. Solub-extact (acid)
C. Solub-extract (alkaline)

Which is best for salad cream?

B

11

Another name for solub extract, alkaline way

Roese-Gottlieb process

12

A. Direct solvent
B. Solub-extact (acid)
C. Solub-extract (alkaline)

Which is best for ice cream?

C

13

Volumetric method involves dissolving sample in ____ and centrifuging out fat
A. H2SO4
B. HI
C. HCl
D. Any of the 3

A

14

Which is not a volumetric method of fat determination?
A. Babcock
B. Gerber
C. Soxhlet
D. B and C

C