Zetmeelstructuren in coatings voor verpakkingen

Environmental concerns are raising the demand for renewable sources to replace petroleum-based products, especially in the packaging sector. Researchers at the Swedish University of Agricultural Sciences examined the relationship between molecular structures of starch and their material properties in coating materials for food packaging. Chemical modification of starch with citric acid and tailored starches from genetically modified potatoes with higher amylose content was used to improve film formation, reduce water sensitivity and decrease gas permeation. Citric acid was used as a cross-linking agent and as a plasticiser to improve the barrier properties of starch-based barrier coatings.
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