Method for concurrent extracting sugarcane fat and chlorophyll from dross in sugar-refiney by using solvent

A chlorophyll and solvent technology, applied in zinc organic compounds, organic chemistry, etc., can solve the problems of large solvent consumption, low product quality and output, and difficult industrial application of technology, so as to reduce production investment and operation cost and improve recovery efficiency and product quality, and the effect of avoiding decomposition and denaturation

Inactive Publication Date: 2005-01-12
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain a good clarification effect, the sugarcane juice must be heated to about 100°C in the clarification process of carbonic acid sugar production and sulfite sugar production, and a long-term heat preservation and sedimentation process is carried out, so that the sucrose and sugar contained in the sugarcane juice Chlorophyll is decomposed or denatured; therefore, the extraction of sugarcane fat or chlorophyll from filter mud is not only difficult to handle, consumes a lot of solvents, and has high production costs, but also has low quality and yield of products, making it difficult for related technologies to be applied industrially.
[0004]

Method used

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  • Method for concurrent extracting sugarcane fat and chlorophyll from dross in sugar-refiney by using solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 Ethanol parallel extraction of sucrose and chlorophyll in low-temperature phosphorus float scum

[0026] Step 1 Pretreatment of scum:

[0027] Wash 300g (water content 52%) scum repeatedly with 2L, 60 ℃ hot water to reduce water-soluble impurities, take filter residue after filter cloth filtration.

[0028] The second step solvent parallel extraction of sucrose and chlorophyll:

[0029] The solvent is ethanol; the operating temperature is 60°C; the mechanical stirring speed is 50r / min; the volume ratio of solvent to scum is 2:1, the addition amount is 0.6L, and the extraction time is 80min.

[0030] Step 3 Extraction Separation and Recovery:

[0031] After the extraction, keep it at 40°C for 50 minutes, extract the supernatant, concentrate the extract with a rotary vacuum evaporator at a temperature of 50°C, recover the distilled ethanol, and concentrate the extract to 1 / 3 (200ml) of its original volume. stop.

[0032] Step 4 Separation of chlorophyll and ...

Embodiment 2

[0034] Example 2 Gasoline Parallel Extraction of Cane Fat and Chlorophyll in Carbonated Scum

[0035] Step 1 Pretreatment of scum:

[0036] Wash 500g of dry scum repeatedly with 2L, 55°C hot water to reduce water-soluble impurities, filter through filter cloth, and take the filter residue.

[0037] The second step solvent parallel extraction of sucrose and chlorophyll:

[0038] The solvent is gasoline; the operating temperature is 50°C; the mechanical stirring speed is 100r / min; the ratio of solvent to scum is 3:1, and the addition amount is 1.5L; the extraction time is 30min.

[0039] Step 3 Extraction Separation and Recovery:

[0040] After the extraction, keep the temperature at 60°C for 30 minutes, and extract the supernatant directly. Concentrate the extract with a rotary vacuum evaporator at a temperature of 50° C., recover the distilled gasoline, and stop when the extract is concentrated to 1 / 10 (150 ml) of its original volume.

[0041] Step 4 Separation of chloroph...

Embodiment 3

[0043] Example 3 Acetone Parallel Extraction of Cane Fat and Chlorophyll in Sulphite Scum

[0044] Step 1 Pretreatment of scum:

[0045] Wash 1000g of scum (water content 55%) repeatedly with 4L, 60°C hot water to reduce water-soluble impurities, and take the filter residue after filtering with filter cloth.

[0046] The second step solvent parallel extraction of sucrose and chlorophyll:

[0047] The solvent is acetone; the operating temperature is 80°C; the mechanical stirring is performed at a speed of 10 r / min; the volume ratio of solvent to scum is 1:1, and the addition amount is 1.0 L; the extraction time is 150 min.

[0048] Step 3 Extraction Separation and Recovery:

[0049] After the extraction is finished, filter the cloth directly to take the filtrate. Concentrate the extract with a rotary vacuum evaporator at a temperature of 80° C., recover the distilled acetone, concentrate the extract to 1 / 6 of the original volume, and stop.

[0050] Step 4 Separation of chlo...

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PUM

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Abstract

Sugar refinery floater is washed, and then added with organic solvent, then separating extraction liquid, recovering solvent, to obtain cane fat and chlorophyll. In this invention, utilized are the differences of oil-dissolving property, smelting points and solubilities in solvents of cane fat and chlorophyll to proceed parallel separation. Due to the floater treatment is placed in front of clarification, the negative affect of organic non-sugar matter such as cane-fat and chlorophyll to sugar-prodn. is eliminated. This invention prodn. method has advantages of: high product quality, low cost, suitable for phosphorous floating method, or up-floating and sulfurous acid method (or carbonic acid method) combination sugar refinery.

Description

technical field [0001] The invention belongs to a method for extracting sucrose and chlorophyll from sugar mill scum. Background technique [0002] Cane fat is a kind of natural lipid, which is a mixture of free acids, alcohols and hydrocarbons. It has multiple biological functions and has no side effects. Cane fat has attracted much attention for its special use in the cosmetics and pharmaceutical industries, and its price is naturally high. , but some sugarcane-rich countries have produced sugarcane resin with lower cost by using sugarcane as raw material. Chlorophyll is a natural plant pigment, which has many uses in food, medicine and biological fields. [0003] In the traditional sugarcane sugar industry, after the sugarcane is squeezed, most of the sucrose and chlorophyll contained in the sugarcane enter the cane juice, and most of the sugarcane is filtered into the filter mud in the latter stage of the clarification process. . In order...

Claims

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Application Information

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IPC IPC(8): C07D487/22C07F3/06
Inventor 陈山卢家炯卢石李凯莫海涛
Owner GUANGXI UNIV
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