TABLE 3.

Aerobic metabolism by heterotrophic bacteria (CO₂ evolution over a 38-h period; initial OD₆₀₀, 0.01) in the presence and absence of (−)-α-pinene (concentration, 3.7 mM)

Organism	Amt (μmol) of CO2 produced day−1		% Inhibition
	Control	Culture containing α-pinene
Escherichia coli	151 ± 1a	139 ± 0.1	8
Pseudomonas aeruginosa	255 ± 9	268 ± 10	−5
Serratia marcescens	188 ± 1	203 ± 14	−8
Staphylococcus aureus	167 ± 6	111 ± 15	33
Bacillus subtilis	125 ± 2	2.6 ± 0.1	98

^aThe values are means ± standard errors of the means determined from duplicate experiments.