PROBLEM TO BE SOLVED: To provide an antibacterial agent having excellent antibacterial activity against a wide variety of microbes and being harmless to humans.SOLUTION: The antibacterial agent comprises 3-hexyne-2,5-diol represented by formula (1). This agent has an action of inhibiting the proliferation of various microbes and is harmless to humans and animals.COPYRIGHT: (C)2005,JPO&NCIPI【課題】本発明は、広範な微生物に対して優れた抗菌活性を有し、人体に安全な抗菌剤を提供することを目的とする。【解決手段】下記一般式(1)で表わされる3-ヘキシン-2,5-ジオールからなる抗菌剤。【化1】【選択図】 なし