MonoTrap is a hybrid novel adsorbent that combines a large surface area and the properties of silica gel, activated carbon, and ODS. Due to the large surface area of porous silica and the adsorption effect caused by the inclusion of activated carbon, a high collection efficiency is obtained. Therefore, high-sensitivity analysis can be performed in a short time. In the case of flowers or the like, the fragrance component changes over time (ripening). To analyze this change in a simple method, we used MonoTrap DCC18 (with activated carbon) to perform simple enrichment analyses of the fragrance components of cherry flowers and cherry flowers ripened by prolonged warming to track the changes in the fragrance components. Using MonoTrap DCC18, we identified Coumarine and others that were not identified in live flowers by ripening. This Coumarine is an aroma produced by salting and ripening cherry flowers. It is actually used to scent Japanese food cherry rice cake.