CN115747383A - Method for producing edible syrup by rotating membrane - Google Patents

Method for producing edible syrup by rotating membrane Download PDF

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Publication number
CN115747383A
CN115747383A CN202211393527.6A CN202211393527A CN115747383A CN 115747383 A CN115747383 A CN 115747383A CN 202211393527 A CN202211393527 A CN 202211393527A CN 115747383 A CN115747383 A CN 115747383A
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syrup
hot water
producing edible
filtering
sugar
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CN202211393527.6A
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刘文青
李凯
邵志杰
盖莉莉
温炵权
贾玉生
陆文德
谢彩锋
杭方学
牛德宝
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Guangxi University
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Guangxi University
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Abstract

The invention discloses a method for producing edible syrup by a rotating membrane, which comprises the steps of dissolving raw sugar into re-dissolved syrup by hot water, carrying out coarse filtration, then carrying out rotary membrane treatment, adsorbing and decoloring by active carbon, filtering by a plate-and-frame filter press, finally decoloring and desalting by an ion exchange column, and then concentrating to obtain a low-color value syrup product. The invention produces the low-color value edible syrup based on the rotary membrane clarified redissolved syrup, and the rotary membrane utilizes the shearing force of a centrifuge and cross-flow filtration for clarification, thereby having high efficiency; no chemical additive is needed, so that the pollution is small; the energy consumption is low, and the production cost can be effectively reduced; the syrup has low color value and can be directly eaten.

Description

Method for producing edible syrup by rotating membrane
Technical Field
The invention belongs to the technical field of sugar production of sugarcane, and particularly relates to a method for producing edible syrup by a rotating film.
Background
With the vigorous development of the catering industry, the merchant demands for low-color value and colorless edible syrup increasingly. The color value of the low-color edible syrup is 45-60 IU, the low-color edible syrup has high sweetness, does not influence the color of the beverage, can replace cane sugar as an important source of a sweetening agent, and is popular with merchants. In addition, for the merchant, the sucrose needs to be dissolved firstly in the using process, and the syrup can be directly used, so that the preparation process of the commodity is simplified; for sugar enterprises, sucrose production requires crystallization, while syrup does not, which reduces production costs. At present, syrup is added to various large brands such as coca-cola, nestle coffee and the like, the quality of products processed by using the syrup is higher, and when the syrup is blended into coffee, mellow mouthfeel can be increased, and fragrance can be excited; when the milk tea is blended, the taste of the beverage is smoother, and the integral flavor is improved.
The raw sugar is a product in the refined sugar production process, and based on a two-step method process, the raw sugar is produced by a crude sugar processing sugar refinery, and the refined sugar is produced by a refining sugar refinery after the raw sugar syrup is redissolved. Because the raw sugar is a crude industrial raw material, has a lot of impurities and high color value, the raw sugar can be used as syrup only by clarification, impurity removal, decoloration and desalination or further refined into refined sugar to be eaten by people, and the development of a new technology for decoloring the raw sugar redissolved syrup has important significance in order to meet the needs of people and improve the quality of sugar products.
The traditional method for decoloring the crude sugar redissolved syrup adopts a chemical method, namely, a chemical additive is added for clarification and impurity removal, but the chemical additive residue can cause the product to have certain food safety problem, so that a green and pure physical impurity removal mode becomes an important means.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for producing edible syrup by a rotating film, aiming at the problems of chemical additives, high energy consumption and high cost in the prior art in the background art, so that the low-color value syrup can be produced with low energy consumption and low cost without adding chemical additives.
In order to solve the technical problem, the invention adopts the following technical scheme:
the invention relates to a method for producing edible syrup by a rotating film, which comprises the following steps:
C. rotating film clarification: filtering the re-dissolved syrup by using a rotating membrane to obtain clear syrup;
D. activated carbon adsorption: adding active carbon into the clear syrup, and uniformly stirring to obtain adsorption clear syrup;
E. and (3) filtering: filtering the adsorbed clear syrup to obtain filtered syrup and filter residue;
F. and (3) decoloring: carrying out decoloration and desalination on the filtered syrup to obtain decolored syrup;
G. and (3) concentrating: and concentrating the decolorized syrup to obtain the final low-color syrup product.
The clarifying condition of the rotating film is that the operating pressure is 0.1-0.4 MPa and the operating temperature is 70-80 ℃.
The active carbon is granular coconut shell active carbon, the grain size is 2-6 mm, and the addition amount is 2.5-12.5 mg per ml of clear syrup.
The active carbon adsorption condition is that the temperature of the syrup is 65-70 ℃.
The hammer degree of the redissolved syrup is 45-50 degrees Bx, and the temperature is 75-90 ℃.
The redissolution syrup is prepared by the following steps:
A. putting the raw sugar into a dissolving tank, and dissolving the raw sugar into syrup by using hot water;
B. the syrup is roughly filtered by a screen with 100-200 meshes to obtain the redissolved syrup.
The hot water is sugar-containing hot water, and the sugar-containing hot water is prepared by the following steps:
H. soaking the filter residue obtained by filtering in the step E in hot water;
I. pumping the hot water containing the filter residue to another plate-and-frame filter press for filtering to obtain the sugar-containing hot water.
And the filtration is carried out by adopting a plate-and-frame filter press.
And the decolorization is carried out by adopting an ion exchange column.
The ion exchange column adopts macroporous acrylic acid series strong base anion exchange resin, and the decolorizing condition is 43-48 ℃.
Compared with the prior art, the invention has the following beneficial effects:
(1) After the redissolved syrup is clarified and purified by a rotating film, the burden of active carbon and an ion exchange column is obviously reduced, and the decoloring and desalting efficiency is improved.
(2) The rotary film is used for removing impurities from the redissolved syrup, and because the syrup impurities are reduced, the loss of the active carbon and the ion exchange column can be reduced, thereby reducing the production cost.
(3) The syrup clarified by the rotary membrane is decolorized and desalted by active carbon and an ion exchange column, so that the color value of the syrup can be obviously reduced, and the edible syrup with high quality and low color value can be obtained.
Drawings
FIG. 1 is a process flow diagram of the process of the present invention.
Detailed Description
The technical solutions in the present invention are clearly and completely described below with reference to the embodiments, and the described embodiments are only a part of the present invention, but not all embodiments.
Example 1
This example is an example of the decolorization of a reconstituted syrup using a rotating film edible syrup production method according to the present invention, comprising the following steps:
A. putting raw sugar into a dissolving tank, and dissolving with hot water to obtain syrup. The brix of the redissolved syrup was 45 ° Bx, and the syrup temperature was 75 ℃.
B. The syrup is roughly filtered by a screen with 100-200 meshes to obtain the redissolved syrup.
C. Rotating film clarification: filtering the redissolved syrup after dissolving the raw sugar by using a rotating membrane to obtain clear syrup. The clarifying conditions of the rotating film are that the operating pressure is 0.1MPa and the operating temperature is 70 ℃.
D. Activated carbon adsorption: pumping the clear syrup to a stirring tank by a pump, adding active carbon into the stirring tank at the same time, and stirring uniformly. The active carbon is granular coconut shell active carbon with the particle size of 2mm, the addition amount of 2.5mg per ml of clear syrup is added, and the adsorption condition is that the syrup temperature is 65 ℃.
E. And (3) filtering: and (3) pumping the syrup pump added with the activated carbon to a plate-and-frame filter press by using a pump for filtering to obtain filtered syrup and filter residues.
F. And (3) decoloring: and (4) transferring the filtered syrup to an ion exchange column for decoloring and desalting to obtain the decolored syrup. The ion exchange column is macroporous acrylic acid series strong base anion exchange resin, and the decolorizing condition is that the temperature is 43 ℃.
G. Concentration: and (4) pumping the decolored syrup into an evaporating tank for concentration to obtain a low-color value syrup product with the brix of 60 degrees Bx.
H. And E, soaking the filter residue obtained in the step E in hot water.
I. Pumping the hot water containing the filter residue to another plate-and-frame filter press for filtering to obtain the sugar-containing hot water.
Example 2
This example is another example of the decolorization of a reconstituted syrup using a rotating film edible syrup production method according to the present invention, comprising the steps of:
A. putting the raw sugar into a dissolving tank, and dissolving with hot water to obtain syrup. The weight of the redissolved syrup was 47 ° Bx, and the syrup temperature was 82 ℃.
B. The syrup is roughly filtered by a screen with 100-200 meshes to obtain the redissolved syrup.
C. Rotating film clarification: filtering the redissolved syrup after dissolving the raw sugar by using a rotating membrane to obtain clear syrup. The film transfer clarification condition is that the operating pressure is 0.2MPa and the operating temperature is 75 ℃.
D. Activated carbon adsorption: pumping the clear syrup to a stirring tank by a pump, adding active carbon into the stirring tank at the same time, and stirring uniformly. The activated carbon is granular coconut shell activated carbon, the particle size is 4mm, the addition amount is 7.5mg per ml of clear syrup, and the syrup temperature is 67 ℃.
E. And (3) filtering: and (3) pumping the syrup pump added with the activated carbon to a plate-and-frame filter press by using a pump for filtering to obtain filtered syrup and filter residues.
F. And (3) decoloring: and (4) pulping the filtered syrup to an ion exchange column for decoloring and desalting to obtain the decolored syrup. The ion exchange column is macroporous acrylic acid series strong base anion exchange resin, and the temperature of the decoloring condition is 45 ℃.
G. Concentration: and (4) pumping the decolorized syrup into an evaporation tank for concentration to obtain a low-color value syrup product with the brix of 65 degrees Bx.
H. And E, soaking the filter residue obtained in the step E in hot water.
I. Pumping the hot water containing the filter residue to another plate-and-frame filter press for filtering to obtain the sugar-containing hot water.
Example 3
This example is a further example of the decolorization of a reconstituted syrup using a rotating film edible syrup production method according to the present invention, comprising the steps of:
A. putting the raw sugar into a dissolving tank, and dissolving with hot water to obtain syrup. The weight of the redissolved syrup was 50 ° Bx, and the syrup temperature was 90 ℃.
B. The syrup is roughly filtered by a screen with 100-200 meshes to obtain the redissolved syrup.
C. Rotating film clarification: filtering the redissolved syrup after dissolving the raw sugar by using a rotating membrane to obtain clear syrup. The rotating film is clarified under the conditions of 0.4MPa of operating pressure and 80 ℃ of operating temperature.
D. Activated carbon adsorption: pumping the clear syrup to a stirring tank by a pump, adding active carbon into the stirring tank at the same time, and stirring uniformly. The activated carbon is granular coconut shell activated carbon, the particle size is 6mm, the addition amount is 12.5mg per ml of clear syrup, and the syrup temperature is 70 ℃.
E. And (3) filtering: and (3) pumping the syrup pump added with the activated carbon to a plate-and-frame filter press by using a pump for filtering to obtain filtered syrup and filter residues.
F. And (3) decoloring: and (4) pulping the filtered syrup to an ion exchange column for decoloring and desalting to obtain the decolored syrup. The ion exchange column is macroporous acrylic acid series strong base anion exchange resin, and the temperature of the decoloring condition is 48 ℃.
G. Concentration: and (4) pumping the decolored syrup into an evaporating tank for concentration to obtain a low-color value syrup product with the brix of 70 degrees Bx.
H. And E, soaking the filter residue obtained in the step E in hot water.
I. Pumping the hot water containing the filter residue to another plate-and-frame filter press for filtering to obtain sugar-containing hot water.
Comparative example
This example is based on a traditional method for clarifying and decoloring a reconstituted syrup of raw sugar, and one example of decoloring a reconstituted syrup comprises the following steps:
A. and (4) honey washing: and (3) spraying and washing the raw sugar by using a honey separator and molasses to remove large-particle impurities and partial pigments on the surface of the raw sugar.
B. Dissolving: dissolving the raw sugar or the honey-washed raw sugar with hot water to obtain the redissolved syrup.
C. Pre-ashing: adding lime milk (or calcium sucrose).
D、CO 2 Filling: twice CO 2 And (5) filling, and filtering by using a plate-and-frame filter press to obtain the clear syrup.
E. Decoloring and desalting: the clear syrup is decolorized and desalted by using ion exchange resin.
F. And (3) concentrating: and (4) conveying the decolored and desalted syrup to an evaporation tank for concentration to obtain a final low-color value syrup product.
And B, dissolving the raw sugar in the step B to 45-degree Bx, and heating to 75 ℃.
And C, adjusting the pH value of the syrup to 8.5.
And E, the ion exchange resin is macroporous acrylic acid series strong base anion exchange resin, and the filtering temperature is 45 ℃.
And F, concentrating the syrup in the evaporation tank to obtain a low-color-value syrup product with the brix of 67-degree Bx.
The test was performed using the syrups obtained in examples 1, 2, 3 and comparative examples, and the pH value of the water sample was measured by a pH meter at room temperature, the brix of the syrup sample was measured based on a digital display refractometer, and the color value and turbidity of the syrup were measured by an ultraviolet-visible spectrophotometer, and the test results were as follows, wherein table 1 is the test result of example 1, table 2 is the test result of example 2, table 3 is the test result of example 3, and table 4 is the test result of comparative example.
TABLE 1
Brix (%) Purity (%) Turbidity (MAU) Color value (IU) pH
Redissolving syrup 45 98.3 1550 1456 6.98
Clear syrup 45 98.9 530 419 6.93
Filtered syrup 45 98.5 45 300 6.89
Low color syrup 60 99.6 9 16 7.01
TABLE 2
Brix (%) Purity (%) Turbidity (MAU) Color value (IU) pH
Redissolving syrup 47 98.4 1570 1460 6.95
Syrup for clearing away heat 47 98.4 508 415 6.85
Filtered syrup 47 98.4 41 290 6.79
Low color syrup 65 99.6 8 11 7.03
TABLE 3
Brix (%) Purity (%) Turbidity (MAU) Color value (IU) pH
Redissolving syrup 50 98.5 1553 1463 6.94
Syrup for clearing away heat 50 98.5 450 415 6.79
Filtered syrup 50 98.5 36 250 6.78
Low color syrup 67 99.7 7 10 7.02
TABLE 4
Brix (%) Purity (%) Turbidity (MAU) Color value (IU) pH
Redissolving syrup 45 98.3 1600 1527 6.91
Clear syrup 45 98.5 800 421 6.75
Low color syrup 67 99.2 15 18 7.01
The experimental results of the examples and comparative examples show that the color values of the syrups prepared by the process of the present invention are lower than the color values of the syrups prepared by the comparative examples, indicating that the process of the present invention is capable of obtaining low color value edible syrups.
The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.

Claims (10)

1. A method for producing edible syrup by a rotating film is characterized by comprising the following steps:
C. rotating film clarification: filtering the re-dissolved syrup by using a rotating membrane to obtain clear syrup;
D. activated carbon adsorption: adding active carbon into the clear syrup, and uniformly stirring to obtain adsorption clear syrup;
E. and (3) filtering: filtering the adsorbed clear syrup to obtain filtered syrup and filter residue;
F. and (3) decoloring: carrying out decoloration and desalination on the filtered syrup to obtain decolored syrup;
G. and (3) concentrating: and concentrating the decolorized syrup to obtain the final low-color syrup product.
2. The method for producing edible syrup by using a rotating film as claimed in claim 1, wherein the rotating film is clarified under the conditions of an operating pressure of 0.1 to 0.4MPa and an operating temperature of 70 to 80 ℃.
3. The method for producing edible syrup by using a rotating film as claimed in claim 1, wherein the activated carbon is granular coconut shell activated carbon, the grain size of the granular coconut shell activated carbon is 2-6 mm, and the addition amount of the granular coconut shell activated carbon is 2.5-12.5 mg per ml of the clean syrup.
4. The method for producing edible syrup by using a rotating film as claimed in claim 1, wherein the activated carbon adsorption condition is that the syrup temperature is 65-70 ℃.
5. A process for producing edible syrup according to claim 1, wherein the said reconstituted syrup has a brix of 45-50 ° Bx and a temperature of 75-90 ℃.
6. A method for producing edible syrup using a rotating film according to claim 1, wherein the reconstituted syrup is prepared by the steps of:
A. putting raw sugar into a dissolving tank, and dissolving into syrup with hot water;
B. the syrup is roughly filtered by a screen with 100-200 meshes to obtain the redissolved syrup.
7. The method of claim 6, wherein the hot water is sugar-containing hot water, and the sugar-containing hot water is prepared by the steps of:
H. d, soaking the filter residue obtained in the step E in hot water;
I. pumping the hot water containing the filter residue to another plate-and-frame filter press for filtering to obtain the sugar-containing hot water.
8. The method for producing edible syrup by using a rotating membrane as claimed in claim 1, wherein the filtering is performed by using a plate and frame filter press.
9. The process for producing edible syrup according to claim 1, wherein the decoloring is performed by using an ion exchange column.
10. The method for producing edible syrup by using a rotating membrane as claimed in claim 8, wherein the ion exchange column adopts macroporous acrylic acid series strong base anion exchange resin, and the decoloring condition is 43-48 ℃.
CN202211393527.6A 2022-07-26 2022-11-08 Method for producing edible syrup by rotating membrane Pending CN115747383A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104404174A (en) * 2014-10-31 2015-03-11 广西大学 Membrane technology-based refined sugar clear-syrup impurity removal and decoloring technology
CN104789705A (en) * 2015-04-02 2015-07-22 广西大学 Refined sugar clarifying method
CN107937626A (en) * 2017-11-27 2018-04-20 广西大学 A kind of refined sugar processing method based on activated carbon decolorizing
CN107937627A (en) * 2017-11-27 2018-04-20 广西大学 A kind of method of raw sugar remelt syrup clarification decoloration
CN109234467A (en) * 2018-09-30 2019-01-18 飞潮(无锡)过滤技术有限公司 The ceramic membrane treatment process of saccharified liquid in a kind of fructose syrup production process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104404174A (en) * 2014-10-31 2015-03-11 广西大学 Membrane technology-based refined sugar clear-syrup impurity removal and decoloring technology
CN104789705A (en) * 2015-04-02 2015-07-22 广西大学 Refined sugar clarifying method
CN107937626A (en) * 2017-11-27 2018-04-20 广西大学 A kind of refined sugar processing method based on activated carbon decolorizing
CN107937627A (en) * 2017-11-27 2018-04-20 广西大学 A kind of method of raw sugar remelt syrup clarification decoloration
CN109234467A (en) * 2018-09-30 2019-01-18 飞潮(无锡)过滤技术有限公司 The ceramic membrane treatment process of saccharified liquid in a kind of fructose syrup production process

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