Interaction between Maillard reaction products and lipid oxidation in starch-based model systems

Area of Science:

• Food Chemistry
• Oxidation Kinetics
• Maillard Reaction

Background:

• Lipid oxidation is a major concern in food quality.
• Maillard reaction products (MRPs) are formed during heating and can influence food properties.
• Understanding MRPs' role in lipid oxidation is crucial for food processing.

Purpose of the Study:

• To investigate the effect of Maillard reaction products (MRPs) on lipid oxidation kinetics.
• To evaluate the antioxidant activity of MRPs in intermediate-moisture model systems.

Main Methods:

• Heating model systems containing starch, glucose, lysine, and soybean oil at 100°C.
• Measuring lipid oxidation and browning indices.
• Assessing peroxide-scavenging activity using crocin bleaching.

Main Results:

• MRPs demonstrated a significant ability to retard peroxide formation, thus inhibiting lipid oxidation.
• The rate of the Maillard reaction was accelerated by the presence of soybean oil and its oxidation products.
• Antioxidant activity of MRPs increased in correlation with the degree of sample browning.

Conclusions:

• MRPs possess antioxidant properties that can mitigate lipid oxidation in food systems.
• The formation and properties of MRPs are influenced by food matrix components like lipids.
• Further research into MRPs can lead to improved food stability and quality.