STUDIES ON THE ACIDITIES OF CANE MOLASSES WORT

抄録

1. The hydrogen ion concentration of cane molasses wort has been investigated by gas chain method for distillery purpose. It varies from pH 5.06-5.93 at 20° Bolling.
2. On heating or reservation, the pH diminishes 0.3-0.56.
3. The buffer capacity has been shown by electrometric titration curve.
4. The titrable acidities of cane molasses wort by electrometric method were 18-36c.c. of 1/1.0 n NaOH on 100c.c. of wort, and by ordinary indicator method using litmus paper were 20-35c.c. and when used phenolphthalein as an indicator were 36-74c.c. of the same.
5. It is observed that the cane molasses wort ferments with good results on the pH range of 3.5-6.0 and the optimal range is pH 4.0-5.0 by the yeast No. 396 of our laboratory which is the powerful and widely distributed species in this land.