Method and apparatus for debittering and deacidifying of high-flesh-content fruit juice

Abstract

The present invention is characterized by that in the juice production process after juice extraction and separation, between any adjacent steps, an adsorption resin can be used to adsorb the bitter substance and citric acid in the juice. The adsorption resin is cross-linking copolymer with macroporous structure or adsorption resin prepared by means of cross-linking reaction. Its equipment for implementing said method includes a tank body whose interior is equipped with a stirrer and whose bottom is equipped with a solid-liquid separation component.

Description

technical field [0001] The invention relates to a method and device for debittering / deacidifying fruit juice with high pulp content. Background technique: [0002] Citrus fruits include lemons, navel oranges, sweet oranges, pomelo, grapefruit, tangerines, tangerines, and kumquats. They are one of the most important subtropical fruits in the world, with a global annual output of more than 80 million tons. The development and utilization of citrus products have involved various aspects such as juice making, canning, wine making, sugaring, and extraction of aromatic oil and pectin. According to the forecast of the Food and Agriculture Organization of the United Nations (FAO), the demand for processed citrus products in my country will reach 1.8 million tons in 2010, including 1.3 million tons of orange juice and 450,000 tons of grapefruit juice. The market potential is huge. However, the citrus juice in my country generally has the defects of heavy bitterness and high acidity ...

AI Technical Summary

Problems solved by technology

[0004] For the solution to the problem of debittering / deacidification of citrus juice, relevant literature has proposed various solutions, including changing the pressing method and reducing the pressing pressure; using activated carbon treatment, adopting membrane filtration combined with enzymatic treatment, adding bitterness inhibitors, etc. However, it cannot fully meet the actual needs in terms of processing effect and operability.

Relevant reports have also mentioned the application of chemically synthesized adsorbents in this area, including the use of materials such as polyamide, PVPP, acetate fiber, and ion exchange resins. Existing work in this area is usually limited to laboratory testing of material properties. There have also been small-scale experimental devices simulating production operations, but problems such as pulp blockage during operation of citrus juice, difficult operation of adsorbent regeneration, and inability to continue production have not been solved.

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