The hedonic tone of vanillin and guaiacol were evaluated by 73 qualified panelists according to the 9-point hedonic scale measurement method,in order to understand the assessment characteristics of the hedonic tone of Chinese population and put forward the test requirements of hedonic tone evaluation. The results show the mean hedonic tone of vanillin was 1. 26,while guaiacol was-1. 18. The mean hedonic tone of vanillin for male assessors was 1. 42,and for female assessors,was 1. 05. At least 15 persons wer...