Abstract: A method for improving the moldability and 3D precision printing performance of a high-fiber dough system by adding functional carbohydrate, and belongs to the technical field of fruit-vegetable food processing. The method includes preparation of aged flour, beating and concentrating of old stalks of asparagus, beating of butter, adding functional carbohydrate to mix materials, 3D printing and the like. Baked aged flour, concentrated asparagus pulp made from the old stalks of asparagus, the butter and the functional carbohydrate are uniformly mixed, and then printed by means of a 3D printer. With carbohydrate being a major ingredient, the 3D printing materials provided contain rich dietary fibers, and can serve as basic food to provide energy for people. The precision of a printed object can be greatly improved by adjusting different printing parameters such as a nozzle diameter, a printing distance and a printing temperature.

Abstract: A method for preserving and conditioning beef comprises: cleaning and chopping picked fresh beef, dipping in composite essential oil prepared from clove essential oil, cinnamon essential oil and illicium verum essential oil for 30 s and taking out and draining slightly; placing the beef dipped into a modified atmosphere packaging box and fast precooling; inflating gas of mixed proportion into the cooled modified atmosphere packaging box with beef for preservation packaging and then storing at the low temperature of 0-4° C. The shelf life of the beef packaged by the method is up to 24 d. The aerobic bacterial count is not over 6.0 lgcfu/g. A total volatile basic nitrogen TVB-N value is not over 20 mg/100 g and belongs to the range of second freshness. The beef is stable in color, is cherry-red, has the advantage of good preservation effect and is used for cooking preserved cooked beef.