The production of fumaric acid from grape must by Candida hydrocarbofumarica ATCC 28532 was studied in shake-flask by varying the initial concentrations of nitrogen and reducing sugars in accordance with a statistical experimental design. A fumaric acid production of about 7.5 g/l was achieved after a residence time of 7 days in presence of the initial nitrogen level lower than 1.10 g/l and of the glucose content varied from 51 to 115 g/l. At higher glucose concentrations (140 g/l) and C/N ratio constant to 150, after 14 days the microbial process yielded 13.15 g/l of fumaric acid with a productivity of 0.94 g/l per day and a total organic acid yeld of 28.3%.
PRELIMINARY STUDY ON FUMARIC ACID PRODUCTION FROM GRAPE MUST BY CANDIDA HYDROCARBOFUMARICA
DE VINCENZI, Sergio
1993
Abstract
The production of fumaric acid from grape must by Candida hydrocarbofumarica ATCC 28532 was studied in shake-flask by varying the initial concentrations of nitrogen and reducing sugars in accordance with a statistical experimental design. A fumaric acid production of about 7.5 g/l was achieved after a residence time of 7 days in presence of the initial nitrogen level lower than 1.10 g/l and of the glucose content varied from 51 to 115 g/l. At higher glucose concentrations (140 g/l) and C/N ratio constant to 150, after 14 days the microbial process yielded 13.15 g/l of fumaric acid with a productivity of 0.94 g/l per day and a total organic acid yeld of 28.3%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
