Overall, phenolic acid profiles varied between the red and white wheat. TPAC, however, was similar. From the PLS analysis, although free (ฟีนอลอิสระ)and bound phenolic(ฟีนอลยึดเหนี่ยว) acids were found to correlate with the sensory characteristics in the bread crumb, the bound phenolic acids were observed to have a better correlation. It is currently unknown as to the mechanism which bound phenolic acids are contributing to sensory perception, and provides an area for future research.