Method for extracting flavone and pectin in series from dried orange peel

Abstract

The invention discloses a method for extracting flavone and pectin in series from dried orange peel, which comprises the following steps of: (1) treating raw materials, namely cutting the dried orange peel for later use; (2) performing alcohol extraction, namely extracting total dried orange peel flavone by refluxing in industrial alcohol; (3) filtering the solution in the (2), and concentrating the filtrate to obtain extract, wherein the main component of the extract is hesperidin by efficient liquid phase detection; (4) flushing the filter residue filtered from the (2) for two to three times by using tap water, adding tap water in an amount which is 10 to 30 times the weight of the filter residue, boiling the mixture, adjusting the pH value to between 1.5 and 2.0 by using hydrochloric acid, preserving the heat, and filtering the solution; (5) extracting the pectin from the filter residue in the (4) at the temperature of between 80 and 90 DEG C according to the method of the (4), and filtering the solution; and (6) combining the filtrate in the (4) and (5), concentrating the combined filtrate, settling the concentrate for 8 hours, filtering the solution, flushing the filter residue for two to three times by using 60 to 70 percent ethanol, and drying the filter residue at the temperature of 45 DEG C to obtain the pectin. The dried orange peel resource is fully utilized, the solvent extracted by the method is easily reclaimed for reuse, the energy consumption can be reduced during extracting the pectin with preserved heat, and aiming at the advantages of extraction and utilization of multiple components in the dried orange peel, the method is suitable for industrialized production of the total dried orange peel flavone and the pectin.

Description

technical field [0001] The invention belongs to the application technology of comprehensive utilization of tangerine peel, in particular to a method for extracting flavonoids and pectin in series from tangerine peel Background technique [0002] Chenpi is the dry and mature outer peel of Citrus reticulate Blanco and its cultivars, mainly containing pectin, flavonoids and volatile oil. At present, some domestic scholars have carried out research on the extraction process of flavonoids and pectin in tangerine peel, but there are still problems such as large energy consumption, low yield and cumbersome methods in production. Contents of the invention [0003] The invention mainly aims at extracting flavonoids and pectin from the same material, that is, tangerine peel, and provides a method for serially extracting flavonoids and pectin from tangerine peel. [0004] The object of the invention is achieved through the following technical solutions: [0005] A method for extrac...

AI Technical Summary

Problems solved by technology

At present, some domestic scholars have carried out research on the extraction process of flavonoids and pectin in tangerine peel, but there are still problems such as large energy consumption, low yield and cumbersome methods in production.

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