| 摘要 |
PURPOSE:To perform desalting and concn. within a short time, by bonding the amino group part of amino acid ester represented by a specific general formula to the carboxyl terminal of a hydrophilic protein hydrolysate through an amino linkage before dialyzing the reaction product. CONSTITUTION:The amino group part of amino acid ester represented by formula R1OR2 (wherein R1 is an amino acid residue and R2 is a saturated or unsaturated hydrocarbon group) is bonded to the carboxyl terminal of a hydrophilic protein hydrolysate through an amido linkage and the obtained reaction product is dialyzed to obtain a proteinaceous emulsifier. As the aforementioned hydrophilic protein hydrolysate, there are casein, gelatin, sericine, soluble collagen, zein or serum albumin. As the aforementioned dialytic method, a method using a hollow fiber type ultrafiltration membrane can be employed. |
