Method for jointly extracting hesperidin and pectin from citrus peels

A technology of citrus peel and hesperidin, which is applied in the deep processing field of comprehensive utilization of citrus peel, can solve the problems of inability to guarantee the color of low-molecular-weight pectin, inability to meet market demand, decolorization of pectin extract, etc., and maintain normal osmotic pressure of blood vessels. , the production conditions are easy to implement, and the effect of reducing production costs

Active Publication Date: 2014-07-30
HUNAN XINLI BIOLOGICAL SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: ① only crude flavonoids are obtained, without refining into hesperidin products, which cannot meet the market demand; ② flavones are extracted under negative pressure conditions, and the steel thickness of the equipment used is thicker than that of the flavone...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for jointly extracting hesperidin and pectin from orange peel, the specific steps are as follows.

[0031] (1) Raw material pretreatment

[0032] Made from dried citrus peels. Dried citrus peels were pulverized into powders with a particle size of 0.5 mm with a pulverizer to obtain citrus peel powders.

[0033] (2) Preparation of hesperidin product

[0034] ①Extraction of hesperidin

[0035] After the first step (1) is completed, first according to the mass (g) of the citrus peel powder obtained in the step (1): the ratio of the volume (mL) of water is a ratio of 1: 10, and the described citrus peel powder is added to the into water, stir and disperse into a mixed solution, adjust the pH value of the mixed solution to 4 with hydrochloric acid for the first time, and stir for 120 minutes; adjust the pH value of the mixed solution to 10 with powdered calcium oxide for the second time, and stir for 20 minutes, so that The citrus peel powder is hardened, which ...

Embodiment 2

[0048] A method for jointly extracting hesperidin and pectin from citrus peel, same as embodiment 1, wherein:

[0049] In step (1), pulverize to a powder with a particle size of 0.1 mm.

[0050] In the 2nd (2)-1. step, the mass (g) of citrus peel powder: the ratio of the volume (mL) of water is 1: 5, and the pH value of adjusting mixed solution with hydrochloric acid is 3 for the first time, and stirring time is 30min; For the second time, use powdered calcium oxide to adjust the pH value of the mixed solution to 9, and the stirring time is 10 minutes; for the third time, use sodium hydroxide solution to adjust the pH value of the mixed solution to 12, heat to 40°C and keep it warm, and the rotation speed is 60r / min , the extraction time is 30min. The mass (g) of filter cake: the ratio of the volume (mL) of water is 1: 3, the pH value of mixed solution is adjusted to 12 with sodium hydroxide solution, is heated to 40 ℃ and is incubated, and rotating speed is 60r / min, extracti...

Embodiment 3

[0057] A method for jointly extracting hesperidin and pectin from citrus peel, same as embodiment 1, wherein:

[0058] In the step (1), the raw material is fresh orange peel. Use a shredder to chop to a powder with a particle size of 2 mm.

[0059]In the 2nd (2)-1. step, the mass (g) of citrus peel powder: the ratio of the volume (mL) of water is 1: 20, and the pH value of adjusting mixed solution with sulfuric acid is 5 for the first time, and stirring time is 240min; For the second time, the pH value of the mixed solution was adjusted to 11 with powdered calcium hydroxide, and the stirring time was 40 minutes; min, the extraction time is 120min. The mass (g) of filter cake: the ratio of the volume (mL) of water is 1: 10, the pH value of mixed solution is adjusted to 13 with potassium hydroxide solution, is heated to 70 ℃ and is incubated, and rotating speed is 120r / min, extraction time 120min.

[0060] In step (2)-②, the pH of the hesperidin extract was adjusted to 5 wit...

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Abstract

The invention discloses a method for jointly extracting hesperidin and pectin from citrus peels, relating to a deep processing method for comprehensive utilization of the citrus peels. The method comprises the steps of preprocessing the raw material, namely dry or fresh citrus peels, then preparing a hesperidin product, and finally preparing a pectin product. The method has the characteristics that production equipment is conventional equipment, production conditions are easy for implementation, and the method is convenient to operate and is suitable for industrial production; the products are high in yield and high in purity (the yield of the hesperidin reaches up to 1.85%-2.72%, the purity of the hesperidin reaches up to 91.56%-95.34%, and the yield of the pectin reaches up to 9.35%-15.56%), and the quality of the products meets the requirements of the market. The method can be widely used for producing hesperidin and pectin products, the hesperidin product prepared by the method can be widely used in fields like anti-inflammation, antioxidation, and maintenance of blood vessel normal osmotic pressure, and the pectin product prepared by the method can be widely used in fields like foods and cosmetics.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization and deep processing of agricultural and sideline products, and in particular relates to a deep processing method for comprehensive utilization of citrus peels. Background technique [0002] In recent years, the annual output of citrus in my country has reached 20 million tons, and citrus peel is a by-product of citrus processing, which accounts for 15% to 30% of the whole fruit weight. Citrus peels are typically processed into animal feed or directly landfilled as waste. Landfilled citrus peels are prone to mildew and odor, and their active ingredients cannot be comprehensively utilized, and will cause serious pollution to the environment; and processing into feed usually requires drying treatment, which consumes a lot of energy and is of low value. There are many useful components in citrus peel that are in urgent need of development and research, such as hesperidin and pectin....

Claims

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Application Information

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IPC IPC(8): C07H17/07C07H1/08C08B37/06
Inventor 周志明张龙王瑶环周小华余淼英袁观海李龙王康
Owner HUNAN XINLI BIOLOGICAL SCI & TECH
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