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Title 

Production of poly-β-hydroxybutyrate and measurement of related enzyme activities in Alcaligenes eutrophus

Authors 

In Young LeeSoo Wan NamEun Soo ChoiHo Nam ChangYoung Hoon Park

Issue Date 

1993

Citation 

Journal of Fermentation and Bioengineering, vol. 76, no. 5, pp. 416-418

Keywords 

acetyl coenzyme a acyltransferasepoly(3 hydroxybutyric acid)alcaligenesenzymesmeasurementsproductionalcaligenes eutrophusenzyme activitypolyhydroxybutyrate

Abstract 

Activities of β-ketothiolase (KT) and glucose-6-phosphate dehydrogenase (GPDH) were determined during the fermentation of Alcaligenes eutrophus NCIMB 11599 at three different values of C/N ratio. As the C/N ratio increased the cell growth decreased due to the limitation of nitrogen, while the cellular poly-β-hydroxybutyrate (PHB) content increased. At an initial C/N ratio of 32.8, the cellular PHB content reached 90.0% after 32 h cultivation. The specific activity of β-ketothiolase in each fermentation was the highest immediately after exhaustion of the nitrogen source. Specific activities of β-ketothiolase and glucose-6-phosphate dehydrogenase were maintained stably within the tested range of C/N ratio even after the N-source was completely exhausted.

ISSN 

0385-6380

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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