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据Messing等人报导,作为固定化葡萄糖异构酶的氧化铝无机载体所需的孔径应大于酶分子长轴70～90(?)的二倍,即175(?).因此,为使酶分子既能进入载体的孔穴,又不易脱落,则必须要考虑载体孔径大小.1983年印明善等曾对以偏铝酸钠硝酸法制备的一种大孔氧化铝载体(约200(?))进行过异构酶载体的研究.本文旨在对国内市售的小孔径多孔氧化铝进行扩孔试验.该氧化铝在1050℃下,经焙烧1小时,其平均孔径可达180(?),它适宜作为固定化葡萄糖异构酶的载体.
According to Messing et al., The pore size required for an alumina support immobilized with glucose isomerase should be greater than twice the size of the enzyme’s major axis 70 to 90 (?), 175 (?). Thus, Both into the carrier’s pores, and not easy to fall off, you must consider the size of the carrier aperture.In 1983 Yin Yin and other had a sodium aluminate nitric acid prepared macroporous alumina support (about 200 (?)) Over isomerase carrier.This paper aims to expand the pore size of the porous alumina commercially available in China.The average pore diameter of alumina up to 180 (?) After calcination at 1050 ℃ for 1 hour, Suitable as a carrier for immobilized glucose isomerase.