Wheat starch structure-function relationship in breadmaking: A review.

Area of Science:

• Food Science
• Biochemistry

Background:

• Bread quality is significantly influenced by starch polymers, gluten proteins, and other flour components.
• Wheat starch comprises amylose and amylopectin, organized in granules within the endosperm protein matrix.
• Starch granules exhibit alternating semicrystalline and amorphous layers, varying in size.

Approach:

• Reviews recent research on wheat starch composition and functionality.
• Investigates proton molecular movement to understand granular swelling and amylose leaching.
• Examines starch interactions with water, proteins, enzymes, lipids, yeast, and salt during breadmaking.

Key Points:

• Starch functionality is critical for bread texture, crumb, and crust characteristics.
• Amylose leaching and granular swelling are influenced by molecular movement within the dough.
• Starch polymers undergo structural reorganization, moisture migration, and retrogradation, affecting staling.

Conclusions:

• Understanding the starch structure-function relationship is key to controlling bread quality.
• Factors affecting starch during dough formation, fermentation, baking, cooling, and storage are critical.
• This review provides insights into wheat starch's role throughout the breadmaking process.