PROBLEM TO BE SOLVED: To provide a yeast that accumulates a γ-glutamyl compound, such as glutathione which is useful industrially, in a high density, and a yeast extract containing the γ-glutamyl compound using the yeast, food and drink using the yeast, and methods for producing those.SOLUTION: The yeast extract is manufactured by using the yeast as a raw material modified to increase the capacity of synthesizing the γ-glutamyl compound, and to decrease the activity of a glutathione degradative enzyme.COPYRIGHT: (C)2013,JPO&INPIT【課題】産業上有用なグルタチオン等のγ-グルタミル化合物を高濃度に蓄積する酵母、当該酵母を用いたγ-グルタミル化合物を含有する酵母エキス、および当該酵母を用いた飲食品、並びにそれらの製造方法を提供する。【解決手段】γ-グルタミル化合物合成能が増大し、且つ、グルタチオン分解酵素の活性が低下するよう改変された酵母を原料として用いて酵母エキスを製造する。【選択図】図6
