| 摘要 |
<p>A protein stabiliser additive comprises two or more of a tris compound of the formula (1): (HOCH2)3-C-R, wherein R is: C1-C4 alkyl, substituted C1-C4 alkyl, NH2; NR1R2 wherein R?1 and R2¿ may be independently: H, C¿1?-C4 alkyl sulphonate, C1-C4 hydroxyalkyl sulphonate; C1-C4 alkyl NHC (CH2OH)3, C1-C4 alkyl, C1-C4 hydroxyalkyl; C1-C4 alkyl carboxylate; a polyelectrolyte; a buffer; and one or more additional components for example divalent metal salts.</p> |
