|
| Country | Biological systems used |
|
| USA | Pure or mixed cultures of Bacillus, Clostridium, Pseudomonas, and Gram-negative rods; mixed cultures of hydrocarbon degrading bacteria; mixed cultures of marine source bacteria; spore suspension of Clostridium; indigenous stratal microflora; slime-forming bacteria; ultramicrobacteria |
| Russia | Pure cultures of C. tyrobutiricum; bacteria mixed cultures; indigenous microflora of water injection and water formation; activated sludge bacteria; naturally occurring microbiota of industrial (food) wastes |
| China | Mixed enriched bacterial cultures of Bacillus, Bacteroides, Eubacterium, Fusobacterium, Pseudomonas; slime-forming bacteria: Brevibacterium viscogenes, Corynebacterium gumiform, Xanthomonas campestris |
| Australia | Ultramicrobacteria with surface active properties |
| Bulgaria | Indigenous oil-oxidizing bacteria from water injection and water formation |
| Canada | Pure culture of Leuconostoc mesenteroides |
| Former Czechoslovakia | Hydrocarbon oxidizing bacteria (predominant Pseudomonas sp.); sulfate-reducing bacteria |
| England | Naturally occurring anaerobic strain, high generator of acids; special starved bacteria, good producers of exopolymers |
| Former East Germany | Mixed cultures of thermophilic Bacillus and Clostridium from indigenous brine microflora |
| Hungary | Mixed sewage-sludge bacteria cultures (predominant: Clostridium, Desulfovibrio, Pseudomonas) |
| Norway | Nitrate-reducing bacteria naturally occurring in North Sea water |
| Oman | Autochthonous spore-forming bacteria from oil wells and oil contaminated soil |
| Poland | Mixed bacteria cultures (Arthrobacter, Clostridium, Mycobacterium, Peptococcus, Pseudomonas) |
| Romania | Adapted mixed enrichment cultures (predominant: Bacillus, Clostridium,
Pseudomonas, and other Gram-negative rods) |
| Saudi Arabia | Adequate bacterial inoculum according to requirements of each technology |
| The Netherlands | Slime-forming bacteria (Betacoccus dextranicus) |
| Trinidad-Tobago | Facultative anaerobic bacteria high producers of gases |
| Venezuela | Adapted mixed enrichment cultures |
|
