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- Chen, H.C.
- Food biotechnology 1996 v.10 no.1 pp. 13-27
- fermentation; nitrogen; equations; methodology; carbon; citric acid; Aspergillus; phosphorus
- ... Response surface designs and analyses were used to optimize the concentrations of carbon, nitrogen and phosphorus for citric acid production by Aspergillus foetidus CCRC 30206. The citric acid production was adequately approximated with a full quadratic equation obtained from a three-factor-five-level central composite design. Analyses of the quadratic surfaces showed that in a 7-day-fermentation ...