Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2008 by Universidad Católica de Valparaíso -- Chile
Vol. 11 No. 2, Issue of April 15, 2008
 


Table 2. Specific growth rates of isolate T307 at different values of yeast extract, pH and temperature. TSY medium was used for investigation effects of pH and temperature on bacterial growth.


Variable Factor

%Yeast extract in thiosulfate MSM

µ (h-1)

pHa

µ (h-1)

Temperature (ºC)b

µ (h-1)

0

0.015 ± 0.001

6.0

0.120 ± 0.004

25

0.137 ± 0.004

0.05

0.096 ± 0.002

6.5

0.126 ± 0.002

30

0.138 ± 0.002

0.10

0.138 ± 0.003

7.0

0.138 ± 0.001

35

0.118 ± 0.002

0.15

0.179 ± 0.002

7.5

0.133 ± 0.002

40

0.100 ± 0.009

0.20

0.234 ± 0.001

8.0

0.119 ± 0.003

 

 

 

 

8.5

0.117 ± 0.004

 

 

 

 

9.0

0.113 ± 0.006

 

 

aTemperature incubation at 30ºC, bInitial pH at 7.
µ: mean value and standard deviation of three determinations.


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