With corn starch as material, hydroxyethylated starch was prepared by first hydrolysing the starchwith acid, then etherifying it with epoxyethane. 介紹了一種以玉米淀粉為原料，將淀粉用酸水解后與環(huán)氧乙烷進(jìn)行醚化反應制備羥乙基淀粉的方法。
The purity of sialic acid, which is hydrolyzed from polysialic acid broth produced by Escherichia coli, was low and required to be further purified for commercial application. 摘要大腸桿菌發(fā)酵得到聚唾液酸，經(jīng)酸水解后得到的唾液酸單體純度較低，需進(jìn)一步分離和純化。
