化合物群 / compound-tetrahydro-iso-alpha-acids
テトラヒドロイソα酸
tetrahydro-iso-α-acids
Hydrogenated iso-α-acid derivatives used as light-stable bittering and foam-stabilizing hop products.
感覚（1）
テトラヒドロイソα酸はイソα酸より低いヒト検知閾値を持つ支持あり
範囲: ASTM method 1432 three-alternative forced-choice testing with 14 volunteers per compound in an unhopped lager beer matrix
注記: The abstract reports a wider spread for tetra (0.7-10.0) than for iso (4.5-11.2), so the ordering of the point estimates should not be read as a clean separation of the two panelist distributions. Statistical comparison of the two thresholds is not stated in the abstract.
Measured in the same unhopped lager beer matrix and by the same protocol, the group-wise detection threshold for tetrahydro-iso-α-acids was 2.7 mg/L (parenthetical figures 0.7-10.0 mg/L) against 7.1 mg/L (4.5-11.2 mg/L) for iso-α-acids. Group and individual results were compared across ASTM 1432 and ASTM 679 and were not statistically different on all but one testing day.
限界: Abstract-level extraction. The abstract does not report a statistical test comparing the iso and tetra thresholds to each other, so the ordering rests on the point estimates alone; the parenthetical spreads overlap substantially. Concentrations are mass-based, so the comparison does not adjust for molar mass.
出典: The Human Bitterness Detection Threshold of Iso-α-Acids and Tetrahydro-Iso-α-Acids in Lager Beer（Kolpin KM; Shellhammer TH, 2009） ・抄録確認
データを表示
compound-tetrahydro-iso-alpha-acids —has_lower_human_detection_threshold_than→ compound-iso-alpha-acidsclaim: clm-tetrahydro-iso-lower-threshold / type: sensory / 更新: 2026-08-30