| Abstract: | Continuous enzyme conversion in a jet cooker offers a lot of benefits compared to batch conversion. The starch has improved binding properties and a better overall performance. Gelpermeation chromatography shows a more favourable molecular weight distribution for the continuous enzyme converted starch. Wheat starch is a valuable binder in paper coating compared to maize starch and potato starch, when the conversion happens in the right way; continuous jet cooking gives the best results. Modified starches, such as Mylbond AC, an esterified starch, are very suitable as cobinder in topcoat applications. They show excellent binding properties and react faster with insolubilizers than oxidized enzyme converted starch, as shown by DSC measurements. |
