Method and system for simultaneously extracting pectin and polyphenol in processing technology of canned citruses

Abstract

The invention provides a method for simultaneously extracting pectin and polyphenol in a processing technology of canned citruses. The method comprises the following steps of separating substances of macromolecule pectin, low molecule pectin and polyphenols, monosaccharide and the like in process water in processing of the canned citruses by using different levels of separating devices, so that the condition that the process water generated in the processing course of canned foods in the prior art is difficult to treat, environment is polluted, and substances are wasted is avoided, substances of different molecular weights are separated by using different separation and extraction manners, such as ultrafiltration and nanofiltration, and a recovery technology cannot be complex. The invention further provides a system for simultaneously extracting pectin and polyphenol from the process water of the canned citruses, according to different sizes of the macromolecule pectin, the low molecule pectin and polyphenols and the monosaccharide, and separating devices for filtering by using different film devices are used, so that the separated substances are high in purity. A demineralizer arranged in the system can effectively remove heavy metal and salts in the process water, so that the condition that the substances pollute the extracted macromolecule pectin, the extracted low molecule pectin and phenols and the extracted monosaccharide is avoided.

Description

technical field [0001] The invention relates to the technical field of process water treatment in the process of canned citrus, in particular to a method and system for synchronously extracting pectin and polyphenols in the process of canned citrus. Background technique [0002] Citrus contains a lot of pectin and polyphenols. Pectin can effectively prevent the absorption of exogenous cholesterol, promote the excretion of neutral cholesterol and liver cholesterol, and have a strong inhibitory effect on the increase of serum cholesterol and liver cholesterol. [0003] Studies have shown that low-molecular-weight citrus pectin binds tightly to the receptors of cancer cells, which can prevent cancer cells from adhering to healthy tissues and block the formation of blood vessels that feed cancer cells, which has anti-cancer effects. There are some modified citrus pectin products abroad. [0004] Citrus is the largest fruit in the world, and my country is a country with a large ...

AI Technical Summary

Problems solved by technology

[0004] Citrus is the largest fruit in the world, and my country is a country with a large output of citrus. Citrus planting has become the main way to generate agricultural income in my country. Canned citrus is the main product of citrus processing in my country, and it is also a traditional superior product. A large number of them are exported to countries or regions such as Japan, the United States, and Europe. At present, the traditional acid and alkali decapsulation and decomplexion processes are commonly used in the processing of canned citrus in my country. During the production process, a large amount of acid containing pectin and polyphenols is produced. , lye, due to the complex recovery process, difficulty, and high cost, at present, my country's processing enterprises discharge the process water of this raw material as wastewater, which brings great difficulties to wastewater treatment. Acid and lye contain a certain amount of pectin. On the one hand, this part of pectin brings great trouble to the treatment of wastewater, increases the economic cost of the enterprise, and also increases the environmental load

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