| abstract |
The present invention provides a kind of edible packaging film and preparation method thereof that instruction food is rancid, is prepared by natural food materials processing powder, soya-bean polypeptides, traditional medicine volatile oil, Grape Skin leaching liquor, Cornutcd pugionium extractive, sulfated chitosan, sodium alginate and plasticizer.The packaging film is to be mixed and made into soya-bean polypeptides and Grape Skin leaching liquor, Cornutcd pugionium extractive and other drugs ingredient under the action of plasticizer, sulfated chitosan and sodium alginate, different colors can be showed with the variation of the pH of external environment, be in red, alkaline environment in acidic environment be blue.The present invention is highly-safe, and the nutritious function of food utensil is high, promotes the effects of gastrointestinal motivity, moreover it is possible to prevent the generation of fatty liver；The present invention has raw material availability high, and raw material sources are wide, environmentally protective based on natural materials, has good benefit. |