To produce a [beta]-NMN-containing yeast extract from yeast having eating experience, and to produce a yeast-originated [beta]-NMN composition. It is found that a yeast extract containing [beta]-NMN in an amount of 2.0% (w/w) or more relative to a dried solid content can be produced by subjecting an extract from yeast to a reaction with a crude enzyme prepared from a microorganism belonging to the genus Rhizopus, e.g., Rhizopus oryzae. A yeast-originated [beta]-NMN-containing composition can be produced by purifying [beta]-NMN from a yeast extract.[課題] 本發明之課題係從有飲食經驗之酵母獲得含有β-NMN之酵母萃取物,獲得來自酵母之β-NMN組成物。 [解決方法] 本案發明者們發現,藉由使從米根黴(Rhizopus oryzae)製備而得之粗製酵素對於從酵母獲得之萃取物進行反應,可獲得每單位乾燥固體成分含有2.0%(w/w)以上β-NMN的酵母萃取物。此外,藉由從酵母萃取液中純化β-NMN,可獲得來自酵母之含β-NMN組成物。無
