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Description
Flashcards by Chloe Roberts, updated more than 1 year ago
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Created by Chloe Roberts
over 11 years ago
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| Question | Answer |
| How is Vegetable extracted from and how is it extracted? | Seeds, nuts and fruits by passing distillation |
| What does vegetable oil provide? | Nutrients and lots of energy |
| Name two things vegetable oil is used in? | Food ➟ Biofuels |
| What does unsaturated oils contain? | Carbon double bonds (C=C) |
| What does unsaturated oils do to bromine water? | Decolourise |
| Why are vegetable oils useful in cooking? | They have high boiling points |
| Name 4 things cooking in oil does? | Increases the energy content ➟ changes the flavour ➟ Changes the colour ➟ changed the texture of the food |
| How is Vegetable oil hardened? | By reacting them with hydrogen at 60°C with a nickel catalyst. |
| What uses does hardening have/ | Makes the oils solid at room temperature so they are suitable for spreading |
| What does not dissolve in water? | Oils |
| What does water and oil produce? | Emulsions |
| What is a common oil used in emulsions | Vegetable Oil |
| What does Emulsifiers do? | Stop water and oil from separating into layers |
| What are the two molecules that make Emulsifiers? | Hydrophobic and Hydrophillic |
| What does vegetable oil provide? | Energy and Nutrients |
| What is vegetable oil better for health than? | Saturated Fats |
| What does Emulsifiers Improve and how? | The texture of foods enabling the water and oil to mix. |
| What is more tempting and palatable due to Emulsifiers? | Fatty Foods |
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