Studies on the Sunlight Flavor of Beer

Part VII. Correlation of the Occurrence of the Sunlight Flavor of Beer to Humulone, Lupulone and Related Compounds (2)

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The sunlight flavor occurred when humulone or lupulone was added to beer after main fermentation was completed, and among the other phenols used, only acetolupuphenone [1-acetyl-3, 3, 5-(γ, γ-dimethylallyl)-cyclohexadiene-(1, 5)-diol-(2, 6)-on(4)] was found to cause the sunlight flavor.