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Food Chemistry: Macronutrient Structure, the Maillard Reaction and Lipid Oxidation · Semester 2

Chemical Transformations in Cooking: Maillard Reaction, Caramelisation and Protein Denaturation

Students will explore simple chemical changes that occur during cooking, such as changes in color, texture, and smell (e.g., browning, boiling).

Key Questions

  1. Construct a mechanistic outline of caramelisation (enolisation, dehydration, fragmentation, polymerisation), explaining why temperature and pH critically determine the ratio of furanone-based versus pyranone-based flavour compounds.
  2. Explain protein denaturation in terms of selective disruption of non-covalent interactions (hydrogen bonds, hydrophobic interactions) and covalent disulfide bridges, and relate the irreversibility of thermal denaturation to the thermodynamics of refolding.
  3. Distinguish the Maillard reaction from caramelisation in terms of substrate requirements, temperature onset, and flavour/colour outcomes, and evaluate how food scientists control these competing pathways through formulation and processing parameters.

MOE Syllabus Outcomes

MOE: Everyday Chemistry - MSMOE: Physical and Chemical Changes - MS
Level: JC 2
Subject: Chemistry
Unit: Food Chemistry: Macronutrient Structure, the Maillard Reaction and Lipid Oxidation
Period: Semester 2

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