The present invention relates to a preparation method for a fresh-keep
film coating agent for fruits, and belongs to the technical field of preparation of the
film coating agent. The preparation method disclosed by the invention comprises the following steps of firstly,
drying substances of folium llicis latifoliae, white peony roots and the like, then performing crushing, performing extraction with an
ethanol solution, collecting an extract, and performing concentrating so as to obtain a concentrated solution; then squeezing substances of carrots,
epipremnum aureum, and the like, to obtain
carrot juice,
epipremnum aureum juice and the like, and performing mixing and blending with substances of
potassium nitrate,
calcium chloride, and the like so as to obtain a culture solution; after being sterilized, performing inoculating with antagonistic
bacteria, and performing culturing, so as to obtain a
bacteria solution; and finally, performing mixing and blending with the concentrated solution, and then adding carboxymethyl
chitin so as to obtain the fresh-keeping
film coating agent for fruits. When the fresh-keeping film
coating agent for fruits prepared by the preparation method disclosed by the present invention is used,
fermentation cannot be caused, so that the condition that
ethanol and aldehydes are accumulated in films to cause peculiar smell, and the quality of
fruits and vegetables is influenced, is avoided, and
pollution cannot be caused in a treatment process.