Lab - Determination of Fat Flashcards
Which is not used to extract free lipid constituents?
A. Diethyl ether
B. Light petroleum fractions
C. Alcohol
C
Lipid material may be effectively extracted by all except A. Alcohol B. Acetone C. Ether D. Water
D
Which is used to extract bound lipid constituents?
A. Diethyl ether
B. Light petroleum fractions
C. Alcohol
C
Werner-Schmid, Roese-Gottlieb, Bolton/Bailey Walker & Soxhlet are \_\_\_\_ methods of determining fat A. Gravimetric B. Volumetric C. Colorimetric D. Metric
A
Bolton/Bailey Walker & Soxhlet are \_\_\_\_ gravimetric methods of determining fat A. Solubilization-extraction B. Direct solvent extraction C. Color extraction D. Numerical exraction
B
Bolton/Bailey Walker & Soxhlet - differentiate
Bolton involves continuous extraction
Soxhlet involves intermittent extraction
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
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
A. Direct solvent
B. Solub-extact (acid)
C. Solub-extract (alkaline)
Which is best for tea?
A
Another name for solub extract, acid way
Werner-Schmid process
A. Direct solvent
B. Solub-extact (acid)
C. Solub-extract (alkaline)
Which is best for salad cream?
B
Another name for solub extract, alkaline way
Roese-Gottlieb process
A. Direct solvent
B. Solub-extact (acid)
C. Solub-extract (alkaline)
Which is best for ice cream?
C
Volumetric method involves dissolving sample in \_\_\_\_ and centrifuging out fat A. H2SO4 B. HI C. HCl D. Any of the 3
A
Which is not a volumetric method of fat determination? A. Babcock B. Gerber C. Soxhlet D. B and C
C
