xii. a, 6 Brill and Thurlow: Alcohol froia Molasses 



283 



corded were planned and performed; solutions were made up 

 as described under a, b, and c: 



a. Two hundred fifty cubic centimeters of 20 per cent molasses solution, 

 plus 0.25 cubic centimeter concentrated sulphuric, plus 1 equivalent of 

 ammonium sulphate were sterilized once by heating and inoculated with 

 yeast. Four of these solutions were prepared and allowed to ferment. 



6. Twenty-four hours later 250 cubic centimeters of solutions identical 

 with a were added to each of the above four solutions. 



c. Twenty-four hours later 500 cubic centimeters of quantities of solu- 

 tions of the strength given below were added to the respective samples: 



1. One hundred twenty grams of molasses in 500 cubic centimeters 

 of solution plus the usual proportion of acid and ammonium sulphate. 



2. One hundred thirty grams of molasses in 500 cubic centimeters of solu- 

 tion plus the usual proportion of acid and ammonium sulphate. 



3. One hundred forty grams of molasses in 500 cubic centimeters of solu- 

 tion plus the usual proportion of acid and ammonium sulphate. 



4. One hundred fifty grams of molasses in 500 cubic centimeters of solu- 

 tion plus the usual proportion of acid and ammonium sulphate. 



This makes sample 1 a 22 per cent molasses solution ; 2, a 23 

 per cent ; 3, a 24 per cent ; and 4, a 25 per cent. 



The first sample for determination of alcohol content was 

 taken at the end of twenty-four hours after the ferment was 

 completed, and subsequent samples were taken at intervals of 

 twenty-four hours, as recorded in Table XI. 



Table XI. — Yields of alcohol obtained from molasses by the use of the 

 Molhant process. 







Alcohol. 



120 hour, jj£ B> 



Alcohol. 



Sample No. 



Mo- 

 lasses. 



24 



hours. 



48 

 hours. 



72 

 hours. 



96 

 hours. 



Al- 

 cohol. 



Acid- 

 ity. 



Al- 

 cohol. 



Maxi- 

 yield. 



Yield, 

 per 

 cent 

 of theo- 

 retical. 





P. cent. 

 22 

 23 

 24 

 25 



3.12 

 3.05 

 3.55 



4.94 

 4.94 

 4.94 



6.46 

 6.70 

 6.79 

 6.61 



7.16 

 7.16 

 7.16 

 7.81 



7.41 

 7.41 

 7.89 

 8.14 



8.52 

 8.40 

 8.40 

 7.76 



7.25 

 7.41 

 7.89 

 8.00 



7.41 

 7.41 

 7.89 

 8.14 



90.7 

 86.8 

 88.5 

 87.7 







4 









The maximum alcohol content was attained at the end of the 

 fifth day. The percentage of alcohol yield of the theoretical 

 for sample 1 is the highest obtained in any of the experiments 

 carried out and would thus yield a greater revenue to the manu- 

 facturer. The highest concentrations gave a somewhat less 

 yield of alcohol, but even they are on a par and in many cases 



151034 2 



