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| Number | Title | Issue Date |
| 4042576 | Extraction of glycoproteins and sialic acid from whey 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 siali... | 08/16/1977 |
| 4042575 | Extraction of glycoproteins and sialic acid from whey 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 ... | 08/16/1977 |
