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Food Chemistry > Enzymes > Flashcards

Enzymes Flashcards

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1
Q

Oxido Reductases

A

Oxidation/reduction of substances

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2
Q

Transferases

A

Transfer of functional groups

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3
Q

Hydrolases

A

Cleavage of bonds with water

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4
Q

Lyases

A

Cleavage of bond without water

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5
Q

Isomerases

A

Rearrangements

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6
Q

Function of Invertase

A

Turns sucrose into glucose and fructose

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7
Q

Glucosidase

A

Invertase from glucose side

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8
Q

Fructosidase

A

Invertase from fructose side

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9
Q

Function of lactase

A

Turns lactose into glucose and galactose

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10
Q

Benefits of lactase

A

Improvement of sweetening power, solubility and digestibility

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11
Q

Alfa amylase role

A

Cleaves alfa 1,4 linkages

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12
Q

Beta amylase role

A

Releases maltose from the non reducing end

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13
Q

Glucoamylase role

A

Cleaves individual glucoses

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14
Q

Iso amylase and pullulanase role

A

Cleave 1,6 linkages

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15
Q

Cellobiohydrolase role

A

Releases 2 glucoses from a chain ed

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16
Q

Endoglucanase

A

Cleaves random middle of chain

17
Q

Beta glucosidase and cellobiase

A

Fully degrade into glucose

18
Q

Polyglacaturonase

A

Cleaves middle of LM pectin

19
Q

Pectate lyase

A

Cleaves middle of LM pectin

20
Q

Pectin lyase

A

Cleaves HM pectin

21
Q

Effects of lipoxygenase

A

Loss of nutritional value, color and formation of aroma compounds

22
Q

Role of lipoxygenase

A

FA with cis cis 1-4 pentadiene into hydroperoxides

23
Q

Role of lipases

A

Hydrolysis of triglycerides into glycerol and fatty acids

24
Q

2 mechanisms catalyzed by PPO

A

Hydroxylation (adding OH group) and dehydrogenation (-OH to =O)

Food Chemistry (3 decks)

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