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Food Science Review
Pectins and stuff
42
Other
Undergraduate 2
10/17/2007

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Cards

Term
The neutralization of an acid by a base is most closely related to
Definition

Titration

 

Term
What is not a food acid?  
Definition
Ethyl Acetate
Term
Which of the following statements is not correct?  
Definition
Fumaric acid is an acid that can donate two hydrogens
Term
Which statement regarding carbon dioxide is false
Definition
An atom of carbon dioxide contains two hydrogens covalently bonded to carbon
Term
Which element from the periodic table is not yet considered an essential dietary mineral?  
Definition
Br
Term
CH3COOH is the chemical formula for
Definition
Acetic Acid
Term
The Carbon to carbon bonds in food molecules such as carbohydrates, proteins, fats and vitamins are examples of
Definition
Covalent Bonds
Term
When amino acids bond to form peptides, this is an example of a ______ Reaction
Definition
Composition
Term
What is required for an enzymatic reaction to go to completion
Definition

Presence of a substance

Presence of an enzyme

Decrease in Activation energy

Formation of ES complex

 

 

 

(ALL OF THESE) 

Term

When Oxygen is added to, or hydrogens or electrons are removed from, food molecules in an enzymatic reaction

 

Definition
enzymatic oxidation occurs
Term

which food molecule is most prone to addition to reactions

 

Definition
Unsaturated fatty acid
Term
Ascorbic acid functions as ____________ because it causes other substances to become reduced while it becomes oxidized in chemical Reactions
Definition
Reducing Agent
Term
What is False Regarding Functional Groups
Definition
They are arrangements of between 6-12 atoms in a single structure
Term
Which is not a functional property of water
Definition
Hygroscopicity
Term
What is incorrect regarding water activity
Definition
In general, as water ativity increases, food stability increases
Term
Which is not a functional property of food acids
Definition
Gain Protons
Term
The following are all true regarding the ionization of fumaric acid, C4H4O4 except
Definition
Produces OH- Hydroxide Ions
Term
Which is not a functional property of food acids  
Definition

Gain Protons

 

Term
In acting as a ________________ In Dough, Fumaric Acid Promotes the ____________ of Disulfide Bonds
Definition
Reducing Agent ; Breakage
Term
What is the Correct Statement regarding baking soda and baking Powder
Definition
Baking Powder does not require added acid in order to produce leavening
Term
All of the following are monosaccharides except
Definition
Maltose
Term
Which substance would not posess glycosidic bonds
Definition
Galactose
Term
Which Choice Does not Belog with the Others
Definition
Carmelization
Term

In the commercial manufacture of sugar, which is the key step

Definition

crystallization

Term
The reaction glucose + hydrogen ---->Sorbitol
Definition
Produces a sugar alcohol
Results in a reduction of the sugar Substrate


Both a and C
Term
Which polysaccharide functions as both a prebotic and ingredient for low-fat foods?
Definition
Inulin
Term
Branched hydrocolloid polysaccharides can form gels more easily than linear ones because
Definition
branching brings reactive functional groups in close proximity through entanglement
Term
Which describes the Correct Changes in a heated then cooled starch plus water system
Definition
starch suspension -->sol -->paste -->gel
Term
In the manufacture of hard candy based on sucrose added acid would accomplish the following
Definition
 hydrolysis of sucrose
Term
all of the following are functional properties of polysaccharides except
Definition
enhanced sweetness
Term
which choice does not belong with the rest
Definition
sixteen carbon atoms in length
Term

All of the following are lipid functional properties except

Definition
Aeration
Heat transfer

-->GELATION
Term
Which is the incorrect statement regarding linoleic acid
Definition
It would have a higher melting point than stearic acid C18:0
Term
The commercial _______of oils is done to harden them and increase shelf life
Definition
Hydrogenation
Term

During lipoxidation, when a fatty acid free radicals reacts with oxygen

Definition
ROO. is Produced
Term
What is true regarding s-s-s- and s- o-p molecules
Definition
Their melting behaviors would differ
Term
In the enzymatic reaction: PPO enzyme + fruit pigment --->es complex-->PPo enzyme + bworn pigment which substance is the oxidized molecule in the reaction as written
Definition
brown pigment
Term
which statement regarding amino acids is true
Definition
Alanine, leucine, and serine are classified as neutral amino acids
Term
Which process does not take place in the cooking of eggs
Definition
denaturation of egg yolk lipids
Term

at the isolectric pH of a protein

Definition
pH=pI
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