AQA GCSE Chemistry Unit 1 6.1 Using Plant oils
- Created by: revisieacocobean
- Created on: 18-05-16 09:43
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- Using Plant oils
- Extracting
- Havested plant material is sieved to remove stones that could damage machinery
- Crushed so seeds are broken open forming a mixture of oil and seed
- Squashed and pressed so oil and water is released
- Water is drained
- Oil filtered and heated to remove bacteria and remnants of water
- Water is drained
- Squashed and pressed so oil and water is released
- Crushed so seeds are broken open forming a mixture of oil and seed
- can be used as foods. Oils have high-energy content and high in nutrients
- Vegetable oils have HIGHER boiling points than water so can cook foods at higher temperatures than water
- Quicker cooking
- Increases energy of food
- Different flavours
- Can be used for Biodiesel- contains oxygen so they burn cleanly
- Carbon neutral (absorbs as much carbon as is given out)
- Biodegradable
- Renewable
- Less SO2 and less particulates
- Produces more NO2
- Land taken up when growing the plants
- Havested plant material is sieved to remove stones that could damage machinery
- Emulsions
- Oil-in-water oil droplets in water
- Water-in-oil water droplets in oil
- A mixture of two immisible liquids
- Uses..
- cosmetics
- Paints
- Food
- Hardening vegetable oils
- Oils liquid at room temp. (unsaturated) C=C
- Hydrogenation
- Unsaturated oil reacts with hrdrogen at 60*C with a nickel catalyst
- Hydrogenation
- Fats solid at room temp. (saturated) C-C
- Oils liquid at room temp. (unsaturated) C=C
- Extracting
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