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Related Experiment Videos

Biophysical features of cereal endosperm that decrease starch digestibility.

Laura Roman1, Manuel Gomez2, Cheng Li3

  • 1Food Technology Area, College of Agricultural Engineering, University of Valladolid, 34004 Palencia, Spain; Whistler Center for Carbohydrate Research, Department of Food Science, Purdue University,745 Agriculture Mall Drive, West Lafayette, IN 47907, USA.

Carbohydrate Polymers
|April 2, 2017
PubMed
Summary

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This summary is machine-generated.

Cereal endosperm structure impacts starch digestibility. Harder endosperm flours digest faster raw but slower when cooked, offering insights for developing slow-digesting flours.

Area of Science:

  • Food Science
  • Plant Biology
  • Biochemistry

Background:

  • The physical structure of cereal endosperm influences starch properties.
  • Understanding endosperm's role in starch bioaccessibility is crucial for food processing.

Purpose of the Study:

  • To investigate how maize endosperm's physical structure affects starch integrity and bioaccessibility in flours.
  • To elucidate the mechanisms behind differential starch digestion rates based on endosperm hardness.

Main Methods:

  • Studied maize endosperm structure and its impact on flour starch.
  • Analyzed starch damage (granular and molecular) after milling.
  • Assessed in vitro starch digestibility of raw and cooked flours with varying particle sizes.
Keywords:
Cell wallsDigestionEndospermFlourMaizePlant tissueStarch

Related Experiment Videos

Main Results:

  • Hard endosperm flours showed more damaged starch, increasing raw flour digestibility.
  • The hard endosperm matrix limited water and heat transfer during cooking, reducing digestibility for particles >80μm.
  • Differential digestion rates were observed between raw and cooked hard vs. soft endosperm flours.

Conclusions:

  • Cereal endosperm's physical and chemical matrix dictates starch digestibility.
  • Mechanistic understanding allows for tailoring cereal flours for specific digestion properties.
  • Findings support the development of commercial cereal flours with controlled slow-digestion characteristics.