Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Scleroproteins – e.g. – fibroin – elastin – silk – etc.
Patent
1988-03-03
1990-01-16
Foelak, Morton
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Scleroproteins, e.g., fibroin, elastin, silk, etc.
530840, 530842, 424 942, 210636, 210650, 210651, C07K 1520, C07G 700, A01N 6302, B01D 1300
Patent
active
048944416
ABSTRACT:
A process for the preparation of undenaturated triple helix collagen, starting form animal tendons or cutis, by extraction with diluted organic acids, precipitation with salts, optional gelation and/or lyophilization, tangential filtration.
The obtained collagen shows favorable purity characteristics, is not allergenic and more effective in the healing processes than collagens obtained by known methods.
REFERENCES:
patent: 4242291 (1980-12-01), Hughes et al.
patent: 4252759 (1981-02-01), Yannas et al.
patent: 4412947 (1983-11-01), Cioca et al.
patent: 4488911 (1984-12-01), Luck et al.
Azpuru Carlos
Foelak Morton
Istituto Gentili S.p.A.
Schneider Walter H.
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