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The contents of capsaicinoids, free sugars and organic acids of 10 Korean varieties of red pepper power were measured and the sensory properties of their water extracts were compared in order to investigate the influence of the composition of taste components on sensory acceptability of Korean red pepper. The composition of taste components in red pepper powder varied widely depending on the varieties; total capsaicinoid content varied from 0.029 to 0.296%, free sugar 8.45∼15.21% and organic acid 4.58∼17.54%. Capsaicinoid contents, especially dihydrocapsaicin content, were highly correlated with the pungent taste of the water extract of red pepper powder (r=0.870), but did not show significant relationship to the overall sensory acceptability. The sensory overall acceptability was highly influenced by the contents of total sugar (r=+0.815), reducing sugar (r=+0.805), glucose (r=+0.814) and fructose (r=+0.787). Multiple regression with total sugar (X₁), total capsaicin (X₂) and total organic acid contents (X₃) increased the correlation coefficient for sensory acceptability(Y) to R=0.9008. From the result, a regression equation of Y=0.9808X₁-10.7526X₂-0.1664X₃-4.1147 was obtained.
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