Effects of medium-chain triacylglycerols on Maillard reaction in bread baking

To investigate the relationship between the fatty acid composition of medium-chain triacylglycerols (MCTs) and the Maillard reaction induced during bread baking, a comparison with various fatty acids was conducted.

Saturated fatty acids had a remarkable inhibitory effect on the amount of advanced glycation end products (AGEs) generated from the Maillard reaction in bread baking compared to unsaturated fatty acids. The amount of AGEs produced by each fatty acid (mg kg^-1 ) was as follows: C18:0, 18.7; C12:0, 35.2; C16:0, 21.4; C18:0, 38.2; C18:1, 68.7; C18:2, 80.1; C20:4, 80.8; C22:4, 89.8. Saturated fatty acids were possibly involved in the Maillard reaction and, as a result, acted to inhibit it. In the case of unsaturated fatty acids, amounts of AGEs during the Maillard reaction in baking tended to increase as the degree of unsaturation increased. In other words, there was a positive correlation between the degree of unsaturation and the amount of AGEs. It was also confirmed that the air pore distribution in baked bread was closely related to AGEs.

These results led us to conclude that the fatty acid composition of the added lipids also influences properties that determine the tastiness of bread. © 2017 Society of Chemical Industry.