The in vitro antibacterial activities of Chang Yu Ding were studied Tth experimental results showed that Chuang Yu Ding was significant active against streptococcus hemolyticus
streptococcus faecalis and staph epidermidis
with MIC50 12.5%. 3.125%.and 1.6%
respectively
and sigmificant active against bacillus Coli with MIC50 12.5%
serratia with MIC50 6.25%
and clostridium tetani with MIC50 6.25% The experimental results indicated that chuang Yu Ding had broad - spectrum antibiotic activitiel