随着聚乙二醇基链长的增加，药物对乙酰胆碱酯酶抑制活性依次减弱。

With an increasing chain length of polyethylene glycol group linked on niclosamide, the inhibitory effects weakened.

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为解决胶原酶免疫原性，采用经氯甲酸对硝基苯酯活化的单甲氧基聚乙二醇来修饰胶原酶。

In order to overcome the immunogenicity of collagenase, the enzyme was modified with monomethoxypolyethylene glycol 5000 (mPEG) activated by p nitrophenyl chloroformate.

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固定化假丝酵母(Candidasp .) - 9脂肪酶催化脂肪酸和不同聚合度的乙二醇形成酯。

Immobilized lipase from Candida sp. 9 on trueran was used to catalyze fatty acids and polyethylene glycols (PEGs) to form the corresponding esters.

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