Abstract:
OBJECTIVE To select the optimal corrigent of Five-juice decoction by method combined intelligent sensory evaluation of electronic-tongue with artificial sensory evaluation.
METHODS There were some kinds of corrigents which had similar values selected from 20 kinds of corrigents based on electronic-tongue technology comprehensive evaluation, then the optimal corrigent was selected by artificial sensory evaluation. The measurement data of intelligent sensory evaluation of electronic-tongue in multiple groups were compared between any two means of single factor experiment of completely random method. The measurement data of artificial sensory evaluation in multiple groups were processed by rank sum test of unidirectional sequence in DPS statistical software.
RESULTS Four kinds of corrigents were selected by intelligent sensory evaluation of electronic-tongue, they had effect on increasing the value of sweetness dramatically, decreasing the value of astringent and aftertaste-astringency dramatically. They had effect on covering up the value of bitter and aftertaste-bitter(Five-juice decoction wasn’t taste bitter). They had no effect on improving the value of umami dramatically but had effect on improving the value of after taste-umami dramatically. The optimal corrigent of Five-juice decoction selected by artificial sensory evaluation was 62% Five-juice decoction dry extract, 19% white sugar, and 19% mannitol. In the function of the optimal corrigent corresponding with intelligent sensory evaluation of electronic-tongue showed that: the value of sweetness increased from 8.367 to 16.24, the value of bitterness decreased from 9.528 to 6.923, the value of astringent decreased from 5.790 to 0.316 7, the value of umami increased from 6.473 to 7.453, the value of aftertaste-bitterness decreased from 1.157 to 0.000, the value of after taste-astringent decreased from 1.320 to 0.043 3, the value of after taste-umami increased from 0.237 8 to 0.680 0.
CONCLUSION The combination of electronic-tongue intelligent sensory evaluation and artificial taste evaluation can scientifically and rationally screen out the best combination of flavoring agents for Five-juice decoction, which significantly improves the taste and optimizes the formulation.