One antibacterial compositions, containing essential oil, from Zanthoxylum schinifolium or Chinese prickly ash A.P.DC is obtained. It is configured to ensure that high antibacterial activity and as an antibacterial agent. An antibacterial compositions to the bacterium of food poisoning include essential oil, as an active component, by Zanthoxylum schinifolium or Chinese prickly ash A.P.DC is generated. The bacterium of food poisoning includes Bacillus cereus, staphylococcus aureus and vibrio parahemolyticus. Essential oil is from Zanthoxylum schinifolium or Chinese prickly ash A.P.DC. It is by manufacturing steam distillation method.
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