The invention relates to a method used for extracting an antibacterial composition from
limulus reagent production waste materials. The method comprises following steps: 1,
raw material treatment is carried out, wherein a lower layer precipitate
waste material obtained in
centrifugation of an emulsified product in
limulus reagent production is collected, and is taken as a
raw material I, and discarded
blood plasma in
limulus reagent production is collected, and is taken as a
raw material II; 2, extraction of a tachyplesin crude extracted solution is carried out, wherein acidolysis is carried out, pH is adjusted so as to remove a precipitate product, and
thermal denaturation is carried out; 3, preparation of a
hemocyanin crude extracted solution from
blood plasma is carried out; 4, preparation of a SOD crude extracted solution is carried out; 5, 60 to 80 parts of the tachyplesin crude extracted solution,10 to 20 parts of the
hemocyanin crude extracted solution, and 10 to 20 parts of the SOD crude extracted solution are mixed, pH value is adjusted to 4 to 5, and filtering is carried out so as to obtain the antibacterial composition. According to the method, the crude extracted solutions are prepared rapidly and conveniently at low cost; the antibacterial composition is capable of inhibiting growth of a plurality of kinds of
bacteria and
fungus; compared with conventional chemical antibacterial products, the antibacterial composition possesses following advantages: the antibacterial composition is safe, mild, and effective, no toxic or
side effect is caused, and generation of
drug resistance and
drug allergy caused by conventional antibacterial products can be avoided.