If cefaperazone was the substrate,sulbactam had only weak enzyme inhibition activity on TEM-1, TEM-2, PSE-2,PSE-4 and SHV-l.

• 以头孢哌酮为底物时,青霉烷砜对TEM-1、TEM-2、PSE-2、PSE-4和SHV-1的抑酶活性较弱。