TABLE 1.

Carbon balance of 2-EHN biodegradation by M. austroafricanum IFP 2173^a

Substrate or product	Mass changeb (mg/liter)	Carbon balance
		Carbon changeb (mg/liter)	Carbon recovery (%)
2-EHN	482	269	0
Cell biomass	94	50c	19
CO2d	115	31	12
TOCe	165	165	61
Total products			92

^aCultures (10 ml) were performed at 30°C in 120-ml flasks.

^bConsidering the whole content of the culture flasks.

^cThe carbon/dry-biomass ratio was assumed to be 52% (17). The dry biomass was determined from 100-ml cultures grown in 1-liter flasks.

^dCO₂ was determined after acidification of the culture.

^eTOC was measured in the culture fluid after filtration through a 0.22-μm membrane.