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10056 results about "Freeze dry" patented technology

Natural fruit and vegetable ferment beverage, and preparation method thereof

The present invention discloses a natural fruit and vegetable ferment beverage, and a preparation method thereof. The preparation method for the ferment beverage comprises: adding freshly-squeezed fruit and vegetable juice to marine fish skin collagen peptide; adopting the resulting mixture as a fermentation substrate; carrying out dilution, slurry mixing and sterilization, and then adopting a direct vat and freeze-dried type lactic acid starter to carry out fermentation; stopping the fermentation after 7-11 days until the pH value is 4.3; adding a supplementary feed and carrying out sterilization; then adding high-activity dried yeast to carry out fermentation; stopping the fermentation after 5-7 days until the pH value is 4.0; after storing the fermentation broth at the low temperature, carrying out homogenization, concentration, centrifugation, blending, sterilization and bulking to finally prepare the novel natural fruit and vegetable ferment beverage. According to the ferment beverage of the present invention, the stepwise fermentation is adopted for the freshly-squeezed fruit and vegetable juice by using the lactic acid bacteria and the yeast; the marine fish skin collagen peptide is added to promote the growth and the metabolism of fermentation bacteria, such that metabolic products of nutritional ingredients in the natural fruits and vegetables are rich so as to provide a beneficial nutrition and health effect.
Owner:CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD

Preparation of degradable pollutant polyalcohol stephanoporate microballoons and uses thereof

A preparation method for porous microspheres of a biodegradable polymer is provided. The method comprises the following steps: (a) dissolving a biodegradable polymer in an organic solvent to form an oil phase of 1-30% (g/ml) concentration; (b) selecting a pore-forming agent 1-50% of the biodegradable polymer in the step (a) and dissolving the pore-forming agent in water to form an internal water phase; (c) adding dropwise the internal water phase into the oil phase at a volume ratio of (1-30):100, and stirring to form a primary emulsion; (d) preparing a polyvinyl alcohol aqueous solution of 0.5-10% (g/ml) concentration, which serves as an external water phase; (e) pouring the primary emulsion into the external water phase at a volume ratio of (3-30):100, stirring or performing ultrasonic treatment to form a double-emulsion, and allowing the polymer in the double-emulsion to solidify, thereby forming microspheres; (f) freeze-drying the microspheres to obtain the final product. The obtained porous microspheres of the biodegradable polymer have high porosity, large specific surface area and good adsorption and encapsulation properties; and are used for the adsorption and encapsulation of unstable protein drugs, polypeptide drugs and growth factors and can retain pharmaceutical activity and effectiveness thereof.
Owner:SOUTHWEST JIAOTONG UNIV

Graphene-based nano iron oxide composite material and preparation method thereof

The invention discloses a graphene-based nano iron oxide composite material and a preparation method thereof. By the method, iron oxide nano granules with uniform diameter and controllable shape and components can be loaded on graphene. The method comprises the following steps of: uniformly dispersing graphite oxide into deionized water by adopting an ultrasonic method to obtain graphene oxide solution; adding an iron salt precursor into the obtained solution and mixing the precursor and the solution uniformly, adjusting the pH of the solution, and hydrolyzing the iron salt; putting the mixed solution into a reaction kettle and performing hydrothermal reaction; and finally, cleaning and freeze-drying the obtained product to obtain the graphene-based nano iron oxide composite material. The raw materials are common and easily obtained, the cost is low, and the preparation process is simple, safe and environmentally-friendly; the prepared graphene-based nano iron oxide composite material has good structural stability and monodispersity; when the composite material is used as a lithium iron battery electrode material, the charge/discharge capacity can reach over 1,000mAh/g; and the composite material has good multiplying power performance and cycle life.
Owner:CHINA UNIV OF MINING & TECH
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