Silver halide emulsions with recombinant collagen suitable for photographic application and also the preparation thereof

G.V. van Heerde (Inventor), A.C. van Rijn (Inventor), J.B. Bouwstra (Inventor), F.A. de Wolf (Inventor), A. Mooibroek (Inventor), M.W.T. Werten (Inventor), R.D. Wind (Inventor), T.J. van den Bosch (Inventor)

    Research output: PatentOther research output

    Abstract

    A tabular silver halide emulsion wherein the tabular grains account for more than 75% of the total grain projected area said emulsion comprising silver halide grains nucleated in the presence of nucleation peptizer and thereafter grown in the presence of growth peptizer, wherein at least one of the peptizers is substantially pure collagen like material prepared by genetic engineering of native collagen encoding nucleic acid, said peptizer having an amino acid sequence comprising more than 4 different amino acids. A process of preparing the AgX emulsion. A process of producing recombinant collagen like polypeptide comprising expression of a collagen like polypeptide encoding nucleic acid sequence by a microorganism to a degree exceeding 0.95 grammes /liter, said recombinant collagen being free of helix structure and preferably the expression occurring in a microorganism other than E. coli or Saccaromyces cerevisiae.
    Original languageEnglish
    Patent numberEP0926543
    Publication statusPublished - 30 Jun 1999

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