Today, seaweed is a food item but it contains gelling agents to bond together carbohydrates. I would like to use cheap seaweed powder together with flour to make a food wrapping replacing that currently made with petroleum based plastic.
you can make plastic from seaweed . because seaweed contain polisakarida and polisakarida raw materials for plastic
Can't give you a direct answer ('cause don't know). But you may want to take a look at these publications:
Thesis Production of potato starch based bioplastic
Conference Paper Production of carrageenan from seaweed (Eucheuma cottoni) wi...
Edible Carrageenan (sulphated co-polymer of D-galactose and 3,6-anhydro-L-galactopyranose; Agarose is not so sulphated polymer than Carageenan) from red algae seems to be good. The Indonesian Biochemists have already reported (please see file; Edible film).
Edible Fucoidan (sulphated poly-L-fucose) from brown algae is the indispensable cancer drug (please see file; Rat DEN Np-Fuco), but may not to be used for edible food wrapping.
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