<P> Sugar beet> Glyconic acid> Polyglyconic acid </P> <P> Starch> (fermentation)> Lactic acid> Polylactic acid (PLA) </P> <P> Biomass> (fermentation)> Bioethanol> Ethene> Polyethylene </P> <P> Many types of packaging can be made from biopolymers: food trays, blown starch pellets for shipping fragile goods, thin films for wrapping . </P>

What are the characteristic functional groups of the monomers that form proteins