PURPOSE: An oral antibacterial agent containing Syzygium samaragense or Syzygium aquaeum extract is provided to nature antibacterial activity which is specific to oral bacteria and to ensure safety. CONSTITUTION: An edible antibacterial agent contains Syzygium samaragense or Syzygium aquaeum extract. The extract is leaf extract of Syzygium samaragense or Syzygium aquaeum. The extract has activity to oral bacteria such as Porphyromonas gingivalis and Fusobacterium nucleatum. An oral composition contains the antibacterial agent having Syzygium samaragense or Syzygium aquaeum extract. The Syzygium samaragense or Syzygium aquaeum extract is obtained using water, methanol, ethanol, propanol, ether, chloroform, acetic acid ethyl, acetone, glycerin, and propylene glycol.본 발명은 항균제, 이를 포함하는 구강용 조성물 및 음식품에 관한 것으로서, 더욱 상세하게는 왁스애플 또는 워터애플 추출물이 구강 내 세균에 특이적으로 항균 활성을 나타내어 상기 추출물을 유효성분으로 함유하는 항균제, 이를 포함하는 구강용 조성물 및 음식품에 관한 것이다.
