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04/17/55

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1. Fed-batch fermentation with free cells of L. lactis-11

2. Fed-batch fermentation using free and immobilized cells of L. lactis-11 with different support

     materials

pH feedback controlled fed-batch lactic acid production by free cells of L. lactis-11 under anaerobic condition with initial glucose of 9 g L-1 at 42 ± 0.1 C, pH 6.0 ± 0.02.

Table 3      

 

Fed-batch lactic acid fermentation with free and immobilized cells of L. lactis-11 using the PBSF system with different support materials

 

Supports

Lactic acid
(g L-1)

Yield (g lactic
acid g-1 glucose)

Productivity
(g L-1 h-1)

Ceramic beads (1–2 mm)

115.0±1.5

0.97±0.02

2.25±0.03

Ceramic beads (5–6 mm)

105.4±1.1

0.95±0.01

2.13±0.02

Macro-activated carbon cylinders

110.7±1.4

0.94±0.01

2.24±0.03

Glass fiber balls

94.0±1.3

0.95±0.01

1.94±0.03

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