Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2007 by Universidad Católica de Valparaíso -- Chile
Vol. 9 No. 1, Issue of January 15, 2006
 

Table 2. Comparison between previous and present results with literature values regarding citric acid production by fungi and yeasts.

Reference

Microorganism

RT or time
(h)

Rj
(g/l x hr)

YP/S (%)
(g/g )

Citrate
(g/l)

Briffaud and Engasser, 1979

Saccharomycopsis lipolytica

200 hrs

(batch)

0.48

0.7

75

95

Enzminger and Asenjo, 1986

S. lipolytica

66 hrs

(batch)

1.16

86

75

Tisnadjaja et al. 1996

Candida guilliermondii

Free cells

110 hrs

Immobilized

0.10

29

11.2

Kristiansen and Charley, 1981

A. foetidus

13 hrs RT

0.43

-

6.5

Kristiansen and Sinclair, 1979

A. niger

13 hrs RT

1.99

~26

Roukas and Harvey, 1988

A. niger

83 hrs RT

0.058

-

4.8

Previous and present work

Continuous

Batch

Repeated batch

Candida oleophila ATCC 20177 (var.)

63 hrs RT

54-56 hrs

80-110 hrs

7.4 days

4.85 days

1.98

1.77-2.23

1.8-1.43

1.5

 

>70

75

<70

 

127

98-125

142-150

131.8

167

 

Supported by UNESCO / MIRCEN network