AXThSEr'TIC\S 



163 



•, 35:32 



-:is —^ — 



5.5 6 p^ 



Lag period in hours 



0.06% 

 0.04% 



Relative generation time 



Fig. 32. Effect of sodium sulfite on the lag period (left), and on 

 the generation time (tight) of Bacterium coli at different acidities. 

 The broken line represents the borderline of tolerance, above which 

 the lag period or the multiplication time are infinite and below which 

 they have the values indicated. 



> PH 



1.9% Ui 

 1.0% < 



0.3% m 

 025%! 



03% 

 002% 



PH ,6 



Lag period in hours 



Generation time 



Fig. 33. Effect of sodium benzoate on the lag period (left) and on 

 the generation time (right) of yeast at different acidities. The broken 

 line represents the borderline of tolerance, above which the lag period 

 or the generation time are infinite and below which they have the 

 values indicated. 



