.psi.-Emulsans

Details .psi.-Emulsans .psi.-Emulsans

1980-05-14

1983-04-19

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

210925, 252 855D, 252312, 252352, 252DIG6, 435101, B01F 1730, B01F 1734, B01F 1752

Patent

active

043805043

ABSTRACT:
Growth of Acinetobacter Sp. ATCC 31012 on various substrates and under varying conditions has been used to produce two classes of extracellular microbial protein-associated lipopolysaccharides (the "emulsans") which, on a weight-for-weight basis, are probably the most efficient emulsifiers discovered and which possess certain characteristics that permit these unique extracellular microbial lipopolysaccharides to be widely used in cleaning oil-contaminated vessels, oil spill management, and enhanced oil recovery by chemical flooding. Base hydrolysis under mild conditions of the emulsans and apoemulsans produces derivatives (the ".psi.-emulsans" and "apo-.psi.-emulsans", respectively) which are completely N-acylated and partially to completely O-deacylated. Emulsans and apoemulsans, both of which biopolymers are strongly anionic, exhibit a high degree of specificity in the emulsification of hydrocarbon substrates which contain both aliphatic and cyclic components. In addition, these extracellular microbiol polysaccharides as well as their O-deacylated and N-deacylated derivatives are adsorbed on and capable of flocculating aluminosilicate ion-exchangers, such as kaolin and bentonite.

REFERENCES:
patent: 3941692 (1976-03-01), Gutnick et al.
patent: 3997398 (1976-12-01), Zajic et al.
Chemosphere, 1, 51, (1972).
Critical Rev., Microbiol., 5, 39, (1976).
Int. Assoc. Microbiol. Soc. Abstracts, vol. II, p. 201.
EPA Report 660-3-75-001, pp. 157-168, Dec. 1974.
Dev. Ind. Microbiol., 12, 87, (1971).
Biotechnol. Bioeng., 14, 331, (1972).
Applied Microbiology, 30, 10, (1975).
Fieser et al.: Organic Chemistry, Third Edition, Reinhold Publ. Corp., New York, 1956, p. 178.
Annual Reviews of Microbiology, 31, 379, (1977).
Applied Microbiology, 24, 363, (1972).
Towner et al., "RP4 Fertility Variants in Acinetobacter Calcoaceticus", Genet. Res. 28: 301-306, (1976).

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