Here's some info on caramelization and malliard reactions taken from Wikipedia.
Caramelization doesn't begin until 230F.
Caramelization (British English: caramelisation) is the oxidation of sugar, a process used extensively in cooking for the resulting nutty flavor and brown color. As the process occurs, volatile chemicals are released, producing the characteristic caramel flavor.
Like the Maillard reaction, caramelization is a type of non-enzymatic browning. However, unlike the Maillard reaction, caramelization is pyrolysis, as opposed to reaction with amino acids.
When caramelization involves the disaccharide sucrose, it is broken down into the monosaccharides fructose and glucose.
Fructose 110°C, 230°F
Galactose 160°C, 320°F
Glucose 160°C, 320°F
Sucrose 160°C, 320°F
Maltose 180°C, 356°F