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【单选题】
下列关于simplecoacervation的正确表述A.
单凝聚法是相分离法常用的一种方法
B.
单凝聚法中调节明胶pH至等电点以下即可使明胶产生胶凝而成囊。
C.
在单凝聚法中加入硫酸钠主要降低明胶的溶解度
D.
在沉降囊中调节pH到8～9,加入37%甲醛溶液于15℃以下使囊固化
E.
影响成囊因素除凝聚系统外还与明胶溶液浓度及温度有关。
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D.
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C.
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D.
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