Interaction mechanisms in cassava starch-hemicellulose-sinapic acid ternary complex

Area of Science:

• Food Science
• Biochemistry
• Materials Science

Background:

• Understanding ternary complex formation is crucial for food ingredient functionality.
• Cassava starch (CS), hemicellulose (HE), and sinapic acid (EA) are key food components with potential for synergistic interactions.

Purpose of the Study:

• To elucidate the molecular mechanisms governing the CS-HE-EA ternary complex.
• To investigate how these interactions affect macroscopic properties relevant to food applications.

Main Methods:

• Analysis of molecular interactions (hydrogen bonding, hydrophobic interactions) within the ternary system.
• Assessment of macroscopic properties including viscosity, digestibility, crystallinity, and thermal stability.

Main Results:

• CS, HE, and EA form a ternary complex primarily through hydrogen bonding and hydrophobic interactions.
• EA interferes with CS-HE structures, while HE impedes CS-EA complex formation.
• Synergistic effects of HE and EA decrease viscosity and digestibility; antagonistic effects enhance crystallinity and thermal stability.

Conclusions:

• Detailed molecular insights into CS-HE-EA interactions were achieved.
• Findings provide a basis for targeted starch modification.
• The study offers new perspectives for developing low-glycemic-index foods using multicomponent systems.