Identification of factors for improved ethylene production via the ethylene forming enzyme in chemostat cultures of Saccharomyces cerevisiae

Table 2 The effect of respiration rate on ethylene formation

Condition	Ethylene
	Specific productivity [μg g_DW^-1h^-1]	Productivity [μg L_Culture^-1h^-1]
Reference condition	30.4 ± 2.8	178 ± 25
+ 7.5 mM Benzoate	50.3 ± 1.3	37.7 ± 0.9
+ 1 mM Azide	0	0

Ethylene production levels in cultures with varied respiration rate.
Values given are averages of two separate samples. ± indicate minimal/maximal ethylene levels of the two samples. Reference condition is performed in defined media with 10 g glucose and 7.5 g (NH₄)₂SO₄ per liter. Benzoate increases respiration, whereas azide inhibits the respiration. These were added to the same media used in the reference condition. All cultivations were performed at D=0.1 h^-1 and pH 5.0.

ISSN: 1475-2859