【摘要】 <正> 木瓜蛋白酶具有广谱的蛋白水解酶活性,广泛地应用于啤酒、饮料的澄清,肉类嫩化和复配消化药物等方面。近年来,为了扩大该酶在啤洒澄清上的应用,一些研究者致力于探索该酶的固定化研究,以提高该酶的利用效率,降低生产成本。更多还原

【Abstract】 This is a report of some results on papain immobilized on chitosan with glutaraldehyde. The effects of the proportion of papain to chitosan, the concentration of glutaraldehyde, temperature, pH value and other factors on immobilization of the enzyme were investigated. Characteristic of the immobilized papain was also studied. The results show that the optimum temperature for immobilizing pa-pain is 70℃ 5 the optimum pH is 8. 0 ; the half-life (t1/2) for the immobilized papain is 30 days; the activity recoverv for the immobilized oaoain is 47%.更多还原