Evaluation of taste characteristics of chinese rice wine by quantitative description analysis, dynamic description sensory and electronic tongue

To reveal the specific differences in taste characteristics of Chinese rice wine, quantitative description analysis, temporal check-all-that-apply (TCATA), temporal dominance of sensation (TDS), time-intensity and an electronic tongue were used to evaluate taste attributes of different types of Chinese rice wine (YH, HD, SN and XX). First, it was found that sourness, sweetness, bitterness and umami endowed Chinese rice wine with unique taste characteristics, and brewing techniques had a significant effect on the taste characteristics of the four types of Chinese rice wine by quantitative description analysis. Then, TCATA test showed that the panelist citation proportion of the sour taste of YH was as high as 100% at the beginning of the evaluation. The citation proportion of the sour and bitter tastes of YH and HD showed a downward trend within 60s after drinking, meanwhile, that of the umami taste gradually increased after drinking for 30s. The sweet taste of SN and XX was stronger than YH and HD when was just drunk, and the citation proportion of the sweet and astringent tastes decreased with time. The TDS and time-intensity tests showed that the dominance of the sour taste of YH and HD continued to 15-20s, and the dominant rate of bitter taste at this stage showed an upward trend. The bitter taste of YH reached the highest dominance rate of 63.3% in 25s. The sweet dominance rate of XX at 0s reached 73.3%, and the dominant duration of sweet taste was close to 30s. And the bitterness of the four types of Chinese rice wine in each period exhibited the order of YH > HD > SN > XX. Finally, the response regularity of electronic tongue to each taste attribute of the four types of Chinese rice wine was consistent with the results of artificial sensory evaluation. A systematic taste evaluation method for Chinese rice wine combined with artificial sensory and intelligent sensory was established reliably.