PROBLEM TO BE SOLVED: To provide a biofilm formation inhibitor that does not damage piping or devices and is also safe for human bodies.SOLUTION: A biofilm formation inhibitor contains C1-C5 alkyl resorcinol as an active ingredient. Preferably, the C1-C5 alkyl resorcinol is a compound represented by formula (I) (where R1-R3 independently represent H, or a C1-5 linear/branched alkyl group all of R1-R3 are not H at the same time).SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】配管や機器に損傷を与えることがなく、かつ人体にも安全なバイオフィルム形成抑制剤の提供。【解決手段】C1~C5アルキルレゾルシノールを有効成分とする、バイオフィルム形成抑制剤。好ましくは、該C1~C5アルキルレゾルシノールが式(I)で示される化合物である、バイオフィルム形成抑制剤。(式中、R1~R3は夫々独立に、H、又はC1~5の直鎖/分枝鎖アルキル基;R1~R3が同時に全てがHになることはない)【選択図】なし
