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

A technology of tandem extraction and tangerine peel, which is applied in pharmaceutical formulations, medical preparations containing active ingredients, plant raw materials, etc., can solve the problems of high production energy consumption, cumbersome methods, and low yields, reducing energy consumption and saving production. cost effect

Inactive Publication Date: 2011-04-06
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, some domestic scholars have carried out research on the extraction process of flavonoids and pectin in tange

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 50 g of dried tangerine peel, chop into small pieces of 5 cm * 5 cm, and reflux with 95% industrial alcohol at 70° C. for 3 h, and the ratio of solid to liquid is 1: 10 (tangerine peel: 95% ethanol, g / V). Filtrate, and concentrate the filtrate to obtain an extract, and obtain 150 mg of total flavonoids, which are mainly hesperidin through high performance liquid phase detection.

[0028] Rinse the filter residue 2-3 times with 10 times the amount of tap water, add 30 times the amount of tap water, boil, adjust the pH value to 1.5-2.0 with hydrochloric acid, keep warm at 60°C for 4 hours, and filter. The filter residue was extracted at 80-90°C for 1 hour, and then filtered. Combine the filtrates, concentrate, settle in an equal volume of anhydrous ethanol for 8 hours, filter, rinse the filter residue with 60-70% ethanol for 2-3 times, and dry at 45°C to obtain 10.5g of pectin.

Embodiment 2

[0030] Weigh 150 g of dried tangerine peel, chop it, the ratio of solid to liquid is 1:15 (tangerine peel: 95% ethanol, g / V), and reflux with 95% industrial alcohol at 70° C. for 2 hours. Filtrate, and concentrate the filtrate to obtain an extract, and obtain 512 mg of total flavonoids.

[0031] Rinse the filter residue with tap water 2-3 times, add 30 times of tap water, boil, adjust the pH value to 1.5-2.0 with hydrochloric acid, keep warm at 70°C for 3h, and filter. Extract the filter residue at 80-90°C for another 2h and filter. Combine the filtrates, concentrate, settle in an equal volume of anhydrous ethanol for 8 hours, filter, rinse the filter residue with 60-70% ethanol for 2-3 times, and dry at 45°C to obtain 31.5g of pectin.

Embodiment 3

[0033] Weigh 250 g of dried tangerine peel, chop it, the ratio of solid to liquid is 1:10 (tangerine peel: 95% ethanol, g / V), reflux with 95% industrial alcohol at 70° C. for 2 h. Filtrate, and concentrate the filtrate to obtain an extract, and obtain 965.3 mg of total flavonoids.

[0034] Rinse the filter residue 2-3 times with tap water, add 30 times of tap water, boil, adjust the pH value to 1.5-2.0 with hydrochloric acid, keep warm at 50°C for 24h and filter. The filter residue was extracted at 85°C for another 2h and filtered. Combine the filtrates, concentrate, settle in an equal volume of anhydrous ethanol for 8 hours, filter, rinse the filter residue with 70% ethanol for 2-3 times, and dry at 45°C to obtain 52.7g of pectin.

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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...

Claims

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Application Information

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IPC IPC(8): A61K36/752C07H17/07C08B37/06
Inventor 袁小红徐国波侯大斌徐春霞何海兵张国林
Owner SOUTHWEAT UNIV OF SCI & TECH
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