Structural features of non-granular spherulitic maize starch

Tor S. Nordmark, Gregory R. Ziegler

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Complementary analyses of the internal structure of spherulites crystallized from high-amylose maize starch were obtained using light, electron and atomic force microscopy. Radially oriented crystalline lamellae were observed in transmission and scanning electron microscopy, as well as AFM. Internal structures consistent with the central hilum region of starch granules were observed. Spherulites were composed largely of linear or lightly branched starch polymers. Degradation of amylopectin at gelatinization temperatures of 180°C was evident, but iodine binding suggested a high molecular weight (>100 DP) for the spherulitic polymers.

Original languageEnglish (US)
Pages (from-to)1467-1475
Number of pages9
JournalCarbohydrate Research
Issue number16
StatePublished - Sep 9 2002

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry


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