Proteins and Oxidation of Food Flashcards

1
Q

What are proteins

A

major structural materials of animal tissue

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2
Q

What do proteins do

A

involved in the maintenance and regulation of life processes

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3
Q

What are enzymes

A

Proteins that act as a biological catalyst

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4
Q

What are enzymes used for

A

to break down other proteins to produce amino acids

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5
Q

Are amino acids water soluble

A

yes

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6
Q

What functional groups do amino acids have

A

carboxyl group
amino group

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7
Q

What are essential amino acids

A

Amino acids the body can’t make
-obtained through diet

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8
Q

How are proteins formed

A

condensation reactions between carboxyl groups and amino groups

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9
Q

What is used to break proteins

A

(enzyme) hydrolysis

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10
Q

What holds proteins in their shape

A

hydrogen bonds

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11
Q

How are proteins denatured

A

heat protein to break H bonds allowing the shape to change

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12
Q

What is oxidation (for carbon compounds

A

an increase in OH ratio
(by removing hydrogen or adding oxygen)

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13
Q

What is reduction (for carbon compounds

A

decrease in OH ratio (remove oxygen and add hydrogen)

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14
Q

What can be used to oxidise alcoholks

A

acidified dichromate (VI) (orange>green)
Hot copper (II) oxide (forms brown solid)

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15
Q

What happens when primary alcohols are oxidised

A

form aldehydes > carboxylic acids

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16
Q

What happens when secondary alcohols are oxidised

A

they form ketones

17
Q

What do antioxidants do?

A

prevent unwanted oxidation reactions from occurring
-Free radical scavengers
-Reducing agents
-electron donors

18
Q

What are free radicals

A

atoms or molecules that are highly reactive due to unpaired E