Preparations of placenta collagen, their extraction method...

Details Preparations of placenta collagen, their extraction method... Preparations of placenta collagen, their extraction method...

C - Chemistry, Metallurgy

07

K

530/15.06, 530/3

C07K 14/78 (2006.01) A61L 27/36 (2006.01) C07K 1/30 (2006.01) C08H 1/06 (2006.01) C12P 21/06 (2006.01)

Patent

CA 1340222

Human or animal placenta is subjected to moderate enzymatic digestion, in particular with pepsin at an acid pH, then, after separation of the residual tissue the impurities are separated at a moderately acid pH, the collagen is precipitated at a neutral pH, redissolved and theresidual impurities precipitated at an acid pH. The collagen obtained can be brought back to a neutral pH and dried in the form of fibres. Completely transparent, physiological and hemocompatible gels and solutions can be prepared. Applications for the fabrication of contact lenses and implants.

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