PROBLEM TO BE SOLVED: To provide a bacteria proliferation inhibitor that prevents the proliferation of microorganisms in food and is highly safe, and also provide a sporulation inhibitor for sporulating Bacillus.SOLUTION: The present invention provides a bacteria proliferation inhibitor and a sporulation inhibitor containing a heated product of Aspergillus awamori culture or extract thereof as an active ingredient.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】食品中の微生物の増殖を抑えることができる、安全性が高い細菌増殖抑制剤の提供。さらに、芽胞形成バチルス属における芽胞発芽阻害剤の提供。【解決手段】黒麹菌培養物の加熱処理物又はその抽出物を有効成分とする細菌増殖抑制剤および芽胞発芽阻害剤。【選択図】なし