PROBLEM TO BE SOLVED: To provide a lactic acid bacterium having reduced cinnamic acid analog productivity, lactic acid bacterium fermentation food or drink derived from a plant material and containing a reduced cinnamic acid analog, and a method for screening a lactobacillus having the above capacity.SOLUTION: Provided is a lactic acid bacterium having a capacity of producing a cinnamic acid analog and also having a productivity of a reduced cinnamic acid analog. Also provided is a method for producing a cinnamic acid analog (such as ferulic acid)-containing fraction including a process of culturing the lactic acid bacterium in a plant material. Also provided is a lactic acid bacterium fermentation food derived from a plant material containing the reduced cinnamic acid analog. Also provided is a method for screening a lactic acid bacterium having a property that, when culture is performed at the optimal temperature of the lactobacillus for 48 hours in a medium with ethyl ferulate in 0.05 wt.% added thereto, 30% or greater of the ethyl ferulate is liberated as dihydroferulic acid.COPYRIGHT: (C)2014,JPO&INPIT【課題】還元された桂皮酸類縁化合物産生能を有する乳酸菌、及び還元された桂皮酸類縁化合物を含有する植物素材由来の乳酸菌発酵飲食品、上記能力を有する乳酸菌のスクリーニング方法を提供する。【解決手段】桂皮酸類縁化合物を産生する能力を有し、かつ還元された桂皮酸類縁化合物の産生能を有する乳酸菌、及び、前記乳酸菌を植物素材中で培養する工程を含む、フェルラ酸などの桂皮酸類縁化合物含有画分の製造方法。前記還元された桂皮酸類縁化合物を含有する植物素材由来の乳酸菌発酵飲食品。フェルラ酸エチルを0.05重量%添加した培地において、前記乳酸菌の至適温度で48時間培養したとき、前記フェルラ酸エチルの30%以上をジヒドロフェルラ酸として遊離する性質を有する乳酸菌のスクリーニング方法。【選択図】図1
