Table 4  Taste thresholds of bitter components

Compound

Concentration (M)

lucidenic acid A

2 x 10-6

lucidenic acid D1

5 x 10-10

ganoderic acid A

1 x 10-8

ganoderic acid C1

5 x 10-8

ganoderic acid J

1 x 10-6

lucidone A

1 x 10-6

lucidone C

1 x 10-5

naringin

2.5 x 10-5

quinin sulfate

8 x 10-6