Abstract
In this research, thermal desorption tendon with gas chromatography-mass spectrum (TD-GC-MS) system has been used to find the marker of VOCs in variety grape of red wines After finding out the proper markers, we utilize the principle of surface acoustic wave (SAW) to develop a highly sensitive electronic nose sensing array system for the detection of red wines. This reported experiments with three varieties of grape including cabernet sauvignon, merlot, and blackqueen which were widely grown in Taiwan. Experiment results demonstrate that the blackqueen grape variety possibly has unique VOCs, which are Acetic acid, methyl ester, 2-Pentanone, Disulfide, dimethyl, Acetic acid, 2-methylpropyl ester. However, using SAW array gas sensor cannot discriminate these red wines because the polymer has poor selectivity to the marker VOCs.