木材糖化の工業化に關する研究 (第5報) : 食用酵母の製造に就て

概要

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While processing wood sugar solution, with Ca(OH)_2 at pH 5 and adding (NH_4)_2SO_4 and KH_2PO_4 an amorphous brown color deposits were found on the bottom of the container.This deposit made the yeast dirty and disturbed estimation.Most part of this deposit is ironphosphate, and it is soluble in with the cocnentration of more than 50% H_2SO_4 or in HNO_3 with the concetration of more the 10%. The author has carried out experiments on 8 speci i of yeasts, and Torula utilis, Mr.Koba. yashi's No.4,No.1 and Mycotorula japonica Hoshino proved most ptomising.In preparation of hydrolyzate for fermenting torula utilis, the optimum condition is 30% of (NH_4)_2SO_4 and 3% of KH_2PO_4 for the sugar contained.
社団法人日本生物工学会の論文
1950-01-15