Table 4 Itaconic acid levels among the main three organic acids (itaconic-, citric- and oxalic acid) in batch cultivation using different copper concentrations
Itaconic acidg /L | Citric acidg /L | Oxalic acidg /L | Itaconic acid percentage from the total organic acids | |
|---|---|---|---|---|
Medium12 - Cu | ||||
108 hrs | 0.086 | 1.774 | 5.851 | 10% |
144 hrs | 1.226 | 3.323 | 9.722 | 9% |
168 hrs | 1.453 | 3.857 | 11.557 | 9% |
Medium12 | ||||
108 hrs | 1.052 | 6.975 | 0.050 | 13% |
144 hrs | 1.490 | 8.877 | 0.062 | 14% |
168 hrs | 1.639 | 8.923 | 0.093 | 15% |
Medium12 + Cu | ||||
108 hrs | 1.430 | 5.128 | 1.262 | 18% |
144 hrs | 1.768 | 6.229 | 1.453 | 19% |
168 hrs | 1.945 | 6.570 | 1.473 | 20% |