Effects of different Baking intensity on the main volatile aroma components of Yunnan Coffee

Using Yunnan Baoshan Tibica and Katim coffee beans as raw materials, the main volatile aroma components of two kinds of coffee beans under different baking intensity were determined by solid phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS). Mass ratio changes of pyridine, guaiacol, 2-methylpyrazine, 2-ethyl-3-dimethylpyrazine, furan methanol, 5-methylfurfural and maltol By using scanning electron microscope, it was observed that the pore size of the porous structure of coffee beans increased with the increase of baking intensity, and the volatilization rate of aroma components was improved.