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Updated: Jul 5, 2025
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Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
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Gallic acid forms V-amylose complex structure with starch through hydrophobic interaction.
Ting He1, Lei Zhao2, Liang Wang2
1Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China; Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical and Biological Engineering, Monash University, Clayton Campus, VIC 3800, Australia.
International Journal of Biological Macromolecules
|January 16, 2024
Summary
Amylose, a component of starch, preferentially binds to gallic acid (GA) via hydrophobic interactions, forming more stable complexes in high amylose maize starch (HAMS). This preferential binding influences starch-polyphenol complex formation.
Area of Science:
- Food Science
- Biochemistry
- Materials Science
Background:
- Starch-polyphenol complexes have potential applications in functional foods.
- Understanding the interaction mechanisms between starch components and polyphenols is crucial for optimizing complex formation.
Purpose of the Study:
- To investigate the role of amylose and amylopectin in starch-polyphenol complex formation.
- To elucidate the interaction mechanisms between gallic acid (GA) and maize starch with varying amylose content.
Main Methods:
- Complexation of gallic acid with normal maize starch (NMS) and high amylose maize starch (HAMS).
- Analysis of crystal structure, molecular structure, Fourier-transform infrared spectroscopy (FTIR), isothermal titration calorimetry (ITC), and molecular dynamics simulations.
Main Results:
- Gallic acid formed V-type crystals with both NMS and HAMS, with higher crystallinity in HAMS-GA complexes.
- Amylose showed a preference for complexing with GA over amylopectin, particularly in HAMS.
- Hydrophobic interactions were identified as the primary binding force between GA and starch, with significantly more binding sites in HAMS.
Conclusions:
- Amylose plays a preferential role in the formation of starch-gallic acid complexes through hydrophobic interactions.
- The findings provide insights for the precise design and utilization of starch-polyphenol complexes in functional food applications.
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