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Process of preparing sodium-copper chlorophyllide and pectin with sisal residue

A technology for sodium copper chlorophyll and chlorophyll, which is applied in copper organic compounds, organic chemistry and other directions, can solve the problems of low yield, complex sodium copper chlorophyll, and high cost, and achieves high purity, reduced equipment investment, and reduced waste.

Inactive Publication Date: 2006-10-18
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, many techniques for extracting sodium copper chlorophyllin from natural plants are generally complicated, with low yield and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Get 1000 grams of wet slag and extrude to obtain 800 grams of slag with a water content of 10-15%. Soak with 90-95% ethanol for 3 times to extract the slag, and filter to obtain the extract and the slag. After recovering ethanol from the extract under reduced pressure, it is extracted with ethyl acetate, and the ethyl acetate is recovered from the extract under reduced pressure to obtain chlorophyll. Chlorophyll was reacted with 10% copper sulfate at PH=2-3, 60°C for 30 minutes, and finally saponified with 5% sodium hydroxide (pH11-12) at 70-80°C for 1 hour to obtain 3 grams of sodium copper chlorophyllin.

Embodiment 2

[0020] Get 2000 grams of wet slag and extrude to obtain 1600 grams of slag with a water content of 10-15%. Soak in 95% ethanol for 4 times to extract the slag, and filter to obtain the extract and the residue. After recovering ethanol from the extract under reduced pressure, it is extracted with petroleum ether, and the extract is recovered from petroleum ether under reduced pressure to obtain chlorophyll. Chlorophyll was reacted with 12% copper sulfate at pH=2-3, 60°C for 40 minutes, and finally saponified with 6% sodium hydroxide (pH11-12) at 70-80°C for 1 hour to obtain 5 grams of sodium copper chlorophyllin.

Embodiment 3

[0022] Take 100 grams of the dry slag obtained in Example 1 after extracting chlorophyll, wash it with ultrasonic water with a wavelength of 29-49 Hz for 30 minutes, and then wash it 3 times with hydrochloric acid with a mass concentration of 0.04% at 50°C; wash the slag in boiling water to inactivate the enzyme 5-10 minutes, then hydrolyze with 0.4% hydrochloric acid solution at 80-90°C for 1.5-2 hours, hydrolyze twice; use ammonia water to adjust PH to 2-3, add iron salt FeCl at 50-70°C 3 Carry out salting-out, and the precipitate obtained by salting-out is washed with alcohol for desalting, decolorized with hydrogen peroxide, and vacuum-dried to finally obtain pectin, and finally obtain 10 grams of pectin.

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PUM

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Abstract

The present invention discloses comprehensive utilization of sisal residue. The wet sisal residue after fiber extraction is extruded, soaked in alcohol and filtered to obtain extracted liquid for preparing chlorophyll and extracted residue for preparing pectin. The extracted liquid after alcohol recovery is extracted with ethyl acetate to obtain chlorophyll; and the chlorophyll is reacted with copper sulfate and saponified with sodium hydroxide to obtain sodium-copper chlorophyllide. The extracted residue is ultrasonically washed, dilute hydrochloric acid washed, enzyme deactivated and hydrolyzed with 0.4 % concentration hydrochloric acid solution to obtain hydrolysate; and the hydrolysate is salted out with iron salt or copper salt, desalted, decolorized and dried to obtain pectin. The present invention raises the utilization value of sisal and is environment friendly.

Description

technical field [0001] The invention relates to a method for comprehensive utilization of hemp dregs in the sisal production process, in particular to a method for preparing copper sodium chlorophyll and pectin by using sisal hemp dregs. Background technique [0002] Sisal (Sisal) belongs to Agaveaceae, a perennial succulent xerophyte herb, a unique economic crop in subtropical regions, and a perennial leaf fiber crop with long fiber, white color, tough texture, acid and alkali resistance, rich It is widely used in national defense, navigation, petroleum, industrial and mining, transportation and handicraft industries because of its characteristics of elasticity, sea immersion resistance, friction resistance, non-fragility, less colloid, and non-slip. Hard fibers. my country extracts more than 50,000 to 80,000 tons of fiber from sisal every year, and produces about 1 million tons of hemp dregs. At present, only a part of these hemp dregs are used as fertilizer, and most of ...

Claims

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Application Information

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IPC IPC(8): C07D487/22C07F1/08C08B37/06
Inventor 林翠梧韦藤幼韦万兴蒋林斌赵树凯
Owner GUANGXI UNIV
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