PROBLEM TO BE SOLVED: To provide a yeast cell wall with high food fiber content without needing a chemical treatment or physical treatment while attaining effective use of a yeast extract residue excessively generated as a byproduct of yeast extract and reduction in amount of the yeast extract residue.SOLUTION: After a cell wall lytic enzyme free from protease is worked on the yeast extract residue, heat treatment is performed at 70-80°C for 10-20 minutes to separate a cell wall into a fraction mainly composed of cell wall and a fraction mainly composed of protein, and the fraction mainly composed of cell wall is dried, whereby a yeast cell wall with a food fiber content of 50% or more is obtained.COPYRIGHT: (C)2013,JPO&INPIT【課題】酵母エキスの副産物として過剰に生成する酵母エキス残渣の有効利用、また酵母エキス残渣の減量を課題とする。また、化学的処理や物理的処理を必要とせずに食物繊維含量の高い酵母細胞壁の取得を課題とする。【解決手段】酵母エキス残渣に対し、プロテアーゼを含まない細胞壁溶解酵素を作用させた後に70~80℃で10~20分加熱処理を行い、細胞壁を主とする画分と蛋白質を主とする画分に分離し、細胞壁を主とする画分を乾燥させることで、食物繊維含量が50%以上の酵母細胞壁を得る。【選択図】なし
