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The kinetics of the acetylation of gelatinised potato starch

By R.A. de Graaf, G.A. Broekroelofs, L.P.B.M. Janssen and A.A.C.M. Beenackers


The reaction rates, in the base-catalysed acetylation of gelatinised aqueous starch (4 wt%), by vinylacetate, were investigated in a semibatch reactor at temperatures ranging from 20 to 50°C. The desired starch acetylation reaction is accompanied by an undesired parallel base-catalysed hydrolysis reaction of vinylacetate and a consecutive hydrolysis reaction of the acetylated starch.

Year: 1995
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