Fig. 2From: Ability of the So-Called Obligate Hydrocarbonoclastic Bacteria to Utilize Nonhydrocarbon Substrates Thus Enhancing Their Activities Despite their Misleading NameGrowth of eight “OHCB” and related strains from the Arabian Gulf on various substrates as sole sources of carbon and energy. The substrate concentration was 500 mg l− 1. Incubation was for 12 d at 30 °C. Each reading is the mean of 3 replicates. In several cases the growth on nonhydrocarbon substrates was even better than on typical hydrocarbon substrates and Tween 80. Error bars represent the standard error based on the three measurementsSubstrates: a, crude oil; b, n-octadecane; c, phenanthrene; d, Tween 80; e, stearyl alcohol; f, oleic acid; 1,glucose; 2, mannose; 3, sucrose; 4, starch; 5, glycerol; 6, peptone; 7, glutamic acid; 8, pyruvic acid; 9, lactic acid; 10, citric acidBack to article page