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Kinetic evaluation of controlled and uncontrolled pH values of media for the production of extracellular lipases by Rhizopus oligosporus IIB-63 and its mutant derivative in stirred fermenter
| pH of Medium/KineticParameters | 7.0 | 8.0 | 9.0 | Uncontrolled pH | ||||
|---|---|---|---|---|---|---|---|---|
| Wild | Mutant | Wild | Mutant | Mutant | Wild | Wild | Mutant | |
| Qp(U/L.h) | 7753 | 5992 | 7325 | 8134 | 12948 | 2920 | 6194 | 7654 |
| Yp/s(U/g. S) | 2600 | 3600 | 3000 | 3500 | 5000 | 2000 | 2200 | 3800 |
| Yp/x(U/g. cells) | 5200 | 7200 | 6000 | 7000 | 10,000 | 4000 | 4400 | 7600 |
