An industrialized method for rapid and efficient production of inulin

Abstract

The invention discloses an industrial method for rapidly and efficiently producing inulin and belongs to the technical field of extraction and refining of natural extract. The method comprises the following steps: removing silt from fresh jerusalem artichoke raw materials; conveying the raw materials into a shredding machine; adding water into shredded jerusalem artichoke and conveying the mixture into a colloid mill; grinding to obtain jerusalem artichoke paste with the size of 200 meshes to 300 meshes; adding water into the jerusalem artichoke paste; uniformly stirring and conveying the mixture into a grinding machine; grinding to obtain slurry; conveying the slurry into a flocculation tank; at a stirring state, adding solid Ca(OH)2 and flocculating; centrifuging and separating to obtain material liquid and flocculated dreg; washing the flocculated dreg with water; adjusting the pH (Potential of Hydrogen) value of the material liquid by utilizing phosphoric acid; carrying out secondary flocculation; centrifuging and separating to obtain the flocculated dreg and the material liquid; de-coloring the material liquid with active carbon and treating by desalting resin; removing monosaccharide by a nano-filtration membrane and refining and concentrating; sterilizing with ozone, and spraying and drying to obtain an inulin product. According the method disclosed by the invention, continuous grinding and extraction is adopted, so that time is saved and the efficiency is higher; the production capacity is greatly improved. After the extraction, the material liquid, material dreg and the flocculated dreg are completely separated by direct flocculation so that the energy consumption of equipment is reduced.

Description

technical field [0001] The invention belongs to the technical field of extracting and refining natural extracts, and in particular relates to an industrialized method for rapidly and efficiently producing inulin. Background technique [0002] Sucrose is one of the bulk raw materials in the food industry. It has excellent properties such as pure and pleasant sweetness stimulation and high energy content of 16.7KJ / g, but excessive intake has become an important unhealthy factor. To reconcile this contradiction, functional sweeteners like inulin came into being. Inulin is a functional fructan, which is a reserve polysaccharide in plants. As a pure natural functional ingredient, it is widely used in dairy products, beverages, low-fat and low-calorie foods, baked foods, and health foods. It has the effects of lowering blood fat, improving intestinal environment, promoting the proliferation of probiotics, preventing constipation, preventing colon cancer, promoting mineral absorpt...

AI Technical Summary

Problems solved by technology

In Patent No. 201410291754.7, Jerusalem artichoke is dried and crushed to obtain about 100 mesh of Jerusalem artichoke powder for microwave extraction. Although the extraction time is short, it needs to use 7-9 times the water for extraction, and the applicability of this method is low; Jerusalem artichoke belongs to the season Fresh materials are not easy to store, and they are easy to breed microorganisms during processing. This requires rapid and large-scale processing of Jerusalem artichokes into products after harvesting, and the extraction of Jerusalem artichokes by water will generate a large amount of industrial wastewater. If an extraction method can be invented to solve the problem of Jerusalem artichoke The disadvantages of long extraction time and large water consumption will bring huge economic benefits to the inulin processing industry