Objective: To investigate antibacterial activity by Periplaneta americana skimmed cream and active carbon material

and compare the effect of intensity between P. americana skimmed cream and active carbon material. Method: The P. americana skimmed cream was decolored with active carbon and solid bleaching material was obtained after freeze-drying. The antibacterial activity of them against Staphylococcus aureus (S.aureas)

Staphylococcus albus (S.albus)

Escherichia coli (E.coli)

Shigella dysenteriae (S.dysenteriae)

Salmonella Paratyphi (S.paratyphi A)

S.paratyphi B

Pseudomonas aeruginosa (P. aeruginosa)

Bacillus bacteria (B.subtilis)

Proteus (P.vulgaris)

Candida albicans (C.albicans)

S. aureus (ATCC 25923)

E. coli (ATCC 25922) in vitro was observed

the minimum inhibitory concentration (MIC) was determined. Result: In all experimental strains

only skimmed cream had some antibacterial effect

S. albus.MIC values of 31.25 g·L-1

on the other multiple strains of bacteria had no antibacterial activity. active carbon material and antibacterial against S. aureus 25923

C. albicans

no antibacterial activity against many other strains of bacteria had antibacterial activity

in which the S. albus and P. aeruginosa antimicrobial was better

the MIC was 15.63

62.5 g·L-1

respectively. Conclusion: P. americana contains antimicrobial active ingredients

compared with active carbon material and skimmed cream

antibiotic effect of active carbon material is better than that of skimmed cream.