Improved calcium sequestering carbohydrate based agents

Arie C. Besemer*, Ted M. Slaghek

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)


The improved tandem oxidation sequence of starch with the aim of developing, e.g. degradable co-builders suitable for laundry formulations as an alternative to the currently used polyacrylates is described. The tandem oxidation of starch starts with sodium periodate treatment of granular starch followed by oxidation of the dialdehyde product with sodium chlorite to dicarboxy starch. It turns out that improving the periodate oxidation resulting in a more complete transformation of the glucose moiety into the dialdehyde product yields, after sodium chlorite oxidation, a dicarboxy starch with a calcium sequestering capacity of 3.3 mmol Ca2+ per gram of dicarboxy product. This is an improvement of about 25% compared with current literature data.

Original languageEnglish
Pages (from-to)443-449
Number of pages7
Issue number10
Publication statusPublished - Oct 2003
Externally publishedYes


  • Co-builder
  • Metaperiodate
  • Sequestering
  • Starch oxidation

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