6.2 Cooking With Vegetable Oils Flashcards

1
Q

What are the boiling points of vegetable oils like?

A

Higher than water

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2
Q

What kind of temperature is food cooked at in oil?

A

High

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3
Q

What does it mean if food is cooked at a high temperature?

A

It is cooked faster

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4
Q

What does oil change about the food?

A

Flavour, colour and texture

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5
Q

What happens when food is cooked in oil?

A

Some of the oil is absorbed so the energy content of the food increases

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6
Q

What can unsaturated oils be reacted with and why?

A

Hydrogen so that some or all of the carbon-carbon double bonds become singe bonds

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7
Q

What is hydrogenation?

A

Reacting unsaturated oils with hydrogen so that the carbon-carbon double bonds become single bonds

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8
Q

What type of conditions is hydrogenation done in?

A

60 degrees using a nickel catalyst

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9
Q

What are oils called once they have undergone hydrogenation?

A

Hydrogenated oils

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10
Q

What are the melting points like of hydrogenated oils?

A

Higher than normal oils because they are more saturated

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11
Q

What is hydrogenation also called and why?

A

Hardening because hydrogenated oils are solids at room temperature

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12
Q

What are hydrogenated oils used for?

A

SPreads and to make pastries and cakes that require solids and fats

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