3.4.5 Rates o f lipid synthesis and turnover
Table 12 shows the rate o f synthesis and turnover o f different lipid classes
produced by the mixed culture growing in different carbon substrates. The rate of
synthesis of hydrocarbons by the mixed species culture growing in UDA in 150 ml of culture during the exponential phase was 0.024 mg/hour, and their turnover during
stationary phase was -0.0053 mg/hour. Relative to all other lipid classes the highest rate
o f synthesis (0.91 mg/hour) and turnover (-0.23 mg/ hour) was observed for the
intracellular free fatty acid pool of the mixed species culture growing in UDA.