Patents Assigned to Union Cooperative Agricole Laitiere de la Manche
  • Extraction of glycoproteins and sialic acid from whey
    Patent number: 4042576
    Abstract: A process for the separation of sialic acid and glycoproteins from dairy or casein factory whey. The proteins are flocculated by thermal treatment, the supernatent is ultrafiltrated and the ultrafiltration retentate is treated by hydrolysis, and the sialic acid is then extracted from the hydrolysis supernatent.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: August 16, 1977
    Assignee: Union Cooperative Agricole Laitiere de la Manche
    Inventor: Jean-Marie Eustache
  • Extraction of glycoproteins and sialic acid from whey
    Patent number: 4042575
    Abstract: Process for the treatment of dairy or casein factory whey, notably for the extraction of glycoproteins and sialic acid.The process includes ultrafiltration of casein whey, thermal flocculation of the proteins of the ultrafiltration retentate, phosphotungstic treatment of the supernatent obtained from the flocculation step, acid hydrolysis of the precipitate and treatment of the hydrolysis supernatent for the extraction of N-acetyl neuraminic acid (NANA).
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: August 16, 1977
    Assignee: Union Cooperative Agricole Laitiere de la Manche
    Inventor: Jean-Marie Eustache