Compositions containing poly (.gamma.-glutamylcysteinyl)glycines

Details Compositions containing poly (.gamma.-glutamylcysteinyl)glycines Compositions containing poly (.gamma.-glutamylcysteinyl)glycines

1989-12-18

1992-02-18

Lee, Lester L.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Peptide containing doai

514 12, 530322, 530324, C07K 900

Patent

active

050894706

ABSTRACT:
A method of removing heavy metals from aqueous solution, a composition of matter used in effecting said removal, and apparatus used in effecting said removal. One or more of the polypeptides, poly (.gamma.-glutamylcysteinyl)glycines, is immobilized on an inert material in particulate form. Upon contact with an aqueous solution containing heavy metals, the polypeptides sequester the metals, removing them from the solution. There is selectivity of poly (.gamma.-glutamylcysteinyl)glycines having a particular number of monomer repeat units for particular metals. The polypeptides are easily regenerated by contact with a small amount of an organic acid, so that they can be used again to remove heavy metals from solution. This also results in the removal of the metals from the column in a concentrated form.

REFERENCES:
patent: 4059572 (1977-11-01), Nakamura et al.
patent: 4310514 (1982-01-01), Durette
patent: 4647656 (1987-03-01), Watanabe et al.
patent: 4950645 (1990-08-01), Vosika et al.

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