The invention discloses a preparation method of a dual bacteriostatic cinnamyl
aldehyde microcapsule, which comprises the following steps of: dissolving
chitosan in glacial
acetic acid to prepare
chitosan solution; adding
cellulose and performing enzymolysis reaction to obtain modified
chitosan solution; dissolving Arabic gum in water to prepare Arabic gum solution; adding cinnamyl
aldehyde, and emulsifying and dispersing at high speed to obtain
emulsion; dropwise adding the modified chitosan solution into the
emulsion, performing coagulation reaction, adding geniposide, and solidifying; and leaching,
drying, and thus obtaining the dual bacteriostatic cinnamyl
aldehyde microcapsule. The preparation method has the advantages that cinnamyl aldehyde bacteriostatic component loss is reduced,
irritation and spicy of cinnamyl are covered, and cinnamyl aldehyde is slowly released in high-temperature and high-
humidity environments; the modified chitosan and cinnamyl aldehyde simultaneously have dual
bacteria-resistant effects, and can generate a good
bacteria-resistant effect when added into a minced fish product;
bacteria-resistant concentration is low, the lowest bacteria-resistant concentration of
Escherichia coli can reach 0.10 percent, and the lowest bacteria-resistant concentration of
staphylococcus aureus can reach 0.15 percent.