为什么要改造青霉素青霉素是人们最熟悉的一种抗菌素,它的大量生产与应用约有二十年的历史,对某些细菌性感染如发炎、发热等有很好的疗效。但是,第一,我们现在常用的青霉素,都是一种苄青霉素(青霉素 G)的制剂,这类青霉素能被人体胃酸破坏,也能被人体肠道内细菌所产生的青霉素酶破坏,而失去抗菌效力,因此只能注射给药,否则,口服经过消化道就会被分解失效。第二,在青霉 Why to reform penicillin Penicillin is one of the most familiar antibiotics, its mass production and application of about 20 years of history, for some bacterial infections such as inflammation, fever and other very good effect. However, first, the penicillin we now use is a preparation of benzylpenicillin (penicillin G). This kind of penicillin can be destroyed by the stomach acid in the human body and can also be destroyed by the penicillinase produced by the bacteria in the human intestinal tract and lose its antibacterial activity. Effectiveness, therefore, can only be administered by injection; otherwise, it will be broken down after oral administration of the digestive tract. Second, in Penicillium