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Flashcards in Lab - Proximate Analysis Deck (8)
0

What is proximate analysis?

Food analysis concerned with determination of the main compositional conponents

1

What is ultimate analysis?

Determination for a particular element/compound (i.e. Vitamin or mineral)

2

Which is not a direct factor in the value of a chem analysis result?
A. Food sample rep
B. How representative of batch that it was takenh
C. mood of the scientist
D. kind of chemical info required

C

3

How do you homogenize plant and animal tissue?

Chopping and blending

4

How do you homogenize liquids and pulverized material?

Pour sample fr one container to another
OR mix by stirring

5

Pick the false statement
A.Oils and fats are best homogenized when gently warmed and mixed
B.Butter and margarine are homogenized in the fridge
C.For homogenization of dry foods, submit a coarse powder and mix
D.Chocolate and cheese must be grated and handmixed before considered homogenized

B
They are re-emulsified by shaking by hand in glass contained after warming to 35 deg C

6

In Vit C analysis, when must analytical procedure be done?

Directly after homogenization

7

Which is false?
A. All prepared food samples must be transferred to dry glass/rigid plastic containers
B. Coarse powder of dry food cannot gain moisture anymore
C. Cold temp storage must be used for good sample
D. None of the above

B