加工・条件 / process-beer-storage
ビールの貯蔵・熟成
beer storage and aging
Post-packaging storage of beer, during which time, temperature, pH and oxygen ingress change the hop-derived bitter compound profile.
関連をたどる
trans-イソα酸 →の間に選択的に分解される→ ビールの貯蔵・熟成
加工・調理でどう変わる（1）
trans-イソα酸はビールの貯蔵・熟成の間に選択的に分解される支持あり
範囲: Beer stored in brown glass bottles
注記: Deliberately scoped to brown glass. The same research group reports that this cis/trans selectivity does not hold under oxygen-permeable packaging; see the limits evidence row.
Storage of beer in brown glass bottles revealed a strong depletion of the trans-configured iso-α-acid isomers in a highly specific manner, whereas the corresponding cis-iso-α-acids seemed to be hardly affected.
限界: Abstract-level extraction. Storage duration, temperature and the number of beers are not stated in the abstract. The finding is packaging-conditional; see the paired limits row.
出典: On the autoxidation of bitter-tasting iso-alpha-acids in beer（Intelmann D; Hofmann T, 2010） ・抄録確認
The abstract states that although trans-iso-α-acids exclusively, not the cis-iso-α-acids, were found to be degraded upon storage of beer, the key transformation products formed exclusively from the trans isomers were not previously known; the study then identifies them.
限界: Abstract-level extraction. The 'exclusively' wording is a summary of the prior literature as the authors state it, not a packaging-resolved measurement in this paper. Storage conditions and beer count are not given in the abstract.
出典: Structures of storage-induced transformation products of the beer's bitter principles, revealed by sophisticated NMR spectroscopic and LC-MS techniques（Intelmann D; Kummerlöwe G; Haseleu G; Desmer N; Schulze K; Fröhlich R; Frank O; Luy B; Hofmann T, 2009） ・抄録確認
限定: In the same paper, storage of beer in polyethylene terephthalate bottles, which are known to be permeable to oxygen, induced a drastic degradation of both isomers independent of their cis/trans configuration. Correspondingly, model oxidation of cis- and trans-isohumulone generated both cis- and trans-configured hydroperoxy-alloisohumulone and the matching hydroxy-alloisohumulones independent of configuration.
限界: Bounds the cis/trans selectivity to low-oxygen packaging rather than refuting it. The abstract does not quantify the degradation in either package, and does not state how the PET and brown glass beers were matched.
出典: On the autoxidation of bitter-tasting iso-alpha-acids in beer（Intelmann D; Hofmann T, 2010） ・抄録確認
データを表示
compound-trans-iso-alpha-acids —is_selectively_degraded_during→ process-beer-storageclaim: clm-trans-iso-selective-degradation / type: processing / 更新: 2026-08-30