Cooking And Food Additives Flashcards
What happens in a chemical change
New substances formed from old ones
May be a change in mass when gas releases
Often substantial energy change
Often irriversible
Cooking causes what kind of change
Chemical change
What is it called when protein molecules change shape
Denaturing
This is permanent 🍳🍗
What happens to the rigid cell wall when cooking vegetables
Cell wall ruptures releasing starch, creating a softer texture
The starch grains swell up and spread out and it is easier to digest🍆
Baking powder contains what that decomposes
Sodium Hydrogencarbonate
What happens when sodium hydrogencarbonate (baking powder) is heated
What causes a cake to rise
It breaks down (decomposes) and gives off sodium carbonate + water+ carbon dioxide
The carbon dioxide given off causes cakes to rise🍰
Antioxidants…
Stop food reacting with oxygen in the air
Emulsifiers…
Help mix ingredients that would separate
Food colours..
Improve appearance of food
Flavour enhancers…
Bring out flavour in food without adding taste of their own
Emulsifiers help oil and water mix by joining droplets together
Explain the emulsifier molecule ends and what they bond to
Hydrophobic bonds to non polar oil molecules
Hydrophilic bonds to polar water molecules
If carbon dioxide is present what happens to calcium hydroxide solution
It is limewater, its turns milky
