PROBLEM TO BE SOLVED: To provide Streptococcus salivarius which has a strong fermenting power for soy milk and coagulates soy milk in a short time. SOLUTION: A lactic acid bacterium belonging to Streptococcus salivarius capable of coagulating 5 mL of a solution containing 10% soymilk per 5 × 10 7 bacteria at 37 ° C. within 6 hours, and fermentation obtained by fermentation of a food material with the lactic acid bacterium. Product, a food or drink containing the lactic acid bacterium or the fermented product, and a method for producing the fermented product, which comprises inoculating the food material with the lactic acid bacterium and fermenting it. [Selection diagram] None【課題】豆乳に対して強い発酵力をもち、短時間で豆乳を凝固させるストレプトコッカス・サリバリウスの提供。【解決手段】５ｘ１０７個の菌数あたり５ｍＬの１０％豆乳含有溶液を３７℃で６時間以内に凝固させることができる、ストレプトコッカス・サリバリウスに属する乳酸菌、前記乳酸菌による食品素材の発酵により得られた発酵物、前記乳酸菌または発酵物を含有する飲食物、および、食品素材に前記乳酸菌を接種し発酵させることを特徴とする前記発酵物の製造方法。【選択図】なし
