Abstract
On the pilot plant of continuous fermentation of sulfite waste liquor (S. W. L.), Yeast Reuse Method was compared with Suspension Method which had been put into operation in Japan, and ADAMS Method which utilized the optimum phase of yeast generation.
1) ADAMS Method was successful by feed of 13 hours cycle time (v. z. total fermentation times was 23 hours), but was not suitable for the fermentation of S. W. L. even for the purpose of shortening the fermentation times, because the fermentation times was not different from that of one-batch fermentation, being attended with the serious consequences to require abundant nutriments and to lose the yeast in vain.
2) Yeast Reuse Method was better both in the fermentation recovery and fermentation times than Suspension Method.
3) In case of Reuse continuous fermentation, it had a good influence on the yeast propagation and fermentation to active yeast by passing through the medium of molasses.
