It is a somewhat well known fact that sodium bisulfite will add to the carbonyl group of a ketone to form a crystalline additionproduct.
人们已经知道，亚硫酸氢钠可以加成到酮的羰基基团形成一个晶体加成产物。
2
The reaction with dicarboxylic acid anhydrides results in an acid additionproduct, which alters the ratio of free basic to free acidic groups in gelatin, so as to lower the isoelectric point.
而二元酸酐酰化反应可改变氨基、羧基的比例，从而降低了明胶的等电点。
3
In addition, children feel validated in their choice of a product when a celebrity endorses that product.