Starch and sustainability

Question 1

what are the 4 uses of starch and what are they used for

Answer 1

stiffening agents - for fabrics or paper
thickening agents - for custard or wallpaper paste
super absorbance - for nappies
starch foam - for packaging

Question 2

define sustainable

Answer 2

a resource that can be renewable so it will not run out and is therefore available for future generations

Question 3

why are plastics and petrol’s not sustainable

Answer 3

they come form fossil fuels which are non-renewable so will run out
not available for future generations

Question 4

why are starch/plant products/bioplastics sustainable

Answer 4

made from plants which are a renewable resource
plants can be regrown to replace the ones used
will be available for future generations