阅读说明：本技术 一种基于多糖纤维炭除胶技术的沙琪玛糖浆纯化工艺 (Sachima syrup purification process based on polysaccharide fiber carbon degumming technology ) 是由 李惠安 冯炳洪 伍伯良 周郑金 连泽彪 罗江华 戴乐平 王斌 于 2019-12-04 设计创作，主要内容包括：本发明公开了一种基于多糖纤维炭除胶技术的沙琪玛糖浆纯化工艺,涉及糖浆纯化技术领域,其技术方案要点是包括如下步骤：一次过滤：向糖浆中加入助滤剂进行一次过滤；二次过滤：向过滤后的糖浆中继续加入活性炭进行二次过滤；离子交换：将过滤后的糖浆通入若干组离子交换装置中去除糖浆中的杂质离子；将离子交换结束的糖浆加入保安过滤器中进行初滤,将收集滤液加入至膜堆装置中进行过滤,将得到的滤出液加入至蒸发器中进行蒸发,最终得到糖浆。本发明解决了沙琪玛会出现粘袋、变硬、返砂的问题,达到了通过降低沙琪玛糖浆中蛋白质含量,从而延长沙琪玛货架期的效果。(The invention discloses a caramel treats syrup purification process based on polysaccharide fiber carbon degumming technology, which relates to the technical field of syrup purification, and adopts the technical scheme that the process comprises the following steps: primary filtration: adding a filter aid into the syrup for primary filtration; secondary filtration: continuously adding active carbon into the filtered syrup for secondary filtration; ion exchange: introducing the filtered syrup into a plurality of groups of ion exchange devices to remove impurity ions in the syrup; and adding the syrup after ion exchange into a security filter for primary filtration, adding the collected filtrate into a membrane stack device for filtration, adding the obtained filtrate into an evaporator for evaporation, and finally obtaining the syrup. The invention solves the problems of sticking, hardening and sand return of the caramel treats, and achieves the effect of prolonging the shelf life of the caramel treats by reducing the protein content in the caramel treats syrup.)

1. A caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology is characterized in that: the method comprises the following steps:

s1, primary filtration: adding a filter aid into the syrup for primary filtration;

s2, secondary filtration: continuously adding active carbon into the filtered syrup for secondary filtration;

s3, ion exchange: introducing the filtered syrup in the S2 into a plurality of groups of ion exchange devices to remove impurity ions in the syrup;

and S4, adding the syrup subjected to ion exchange in the step S3 into a security filter for primary filtration, adding the collected filtrate into a membrane stack device for filtration, adding the obtained filtrate into an evaporator for evaporation, and finally obtaining the syrup.

2. The caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology as claimed in claim 1, wherein: the filter aid is perlite, and the addition amount of the filter aid is 20-40kg/75m syrup for heavy plantation; in the primary filtering process, the filtering temperature is 55-60 ℃ and the pressure is 0.2-0.4 MPa.

3. The caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology as claimed in claim 1, wherein: in the secondary filtration process, the addition amount of activated carbon is 20-40kg/75m of the syrup for bearing the fruit and trees, the filtration temperature is 50-55 ℃, and the pressure is 0.2-0.4 MPa.

4. The caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology as claimed in claim 1, wherein: the ion exchange devices are at least three groups, and at least one group of ion exchange devices is used for standby; each set of said ion exchange means comprises a cation exchange column and an anion exchange column; each cation exchange column is connected with an anion exchange column in series; cation exchange resin is arranged in the cation exchange column, and anion exchange resin is arranged in the anion exchange column.

5. The caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology as claimed in claim 1, wherein: the specific process for removing impurity ions by ion exchange comprises the following steps: continuously introducing the filtered syrup in the S2 into an ion exchange device until the resin is saturated; injecting water from the bottom of the ion exchange column after ion exchange to remove the syrup; after the ion exchange is finished, the anion exchange resin and the cation exchange resin are respectively regenerated.

6. The caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology as claimed in claim 1, wherein: the specific process for regenerating the anion and cation exchange resin comprises the following steps: and (3) washing the cation exchange column by using dilute hydrochloric acid with the mass concentration of 5%, washing the anion exchange column by using sodium hydroxide with the mass concentration of 4% until the conductivity of the anion exchange column and the conductivity of the cation exchange column are less than or equal to 150 mu s/cm.

7. The caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology as claimed in claim 1, wherein: the number of the film stack devices is at least eight, and at least two groups of film stack devices are used for standby; four fiber carbon filter membranes are vertically arranged in each group of membrane stack devices.

8. The caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology as claimed in claim 1, wherein: the specific process for filtering by the membrane stack device is as follows: the pressure of feeding and discharging is less than or equal to 1.5bar, the temperature of cleaning water is more than or equal to 80 ℃, the time is more than or equal to 40 minutes, and the flushing flow rate is 1.5-2.0 times of the filtering flow rate.

Technical Field

The invention relates to the technical field of syrup purification, in particular to a caramel treats syrup purification process based on polysaccharide fiber carbon degumming technology.

Background

The caramel treats manufactured by the traditional process are boiled to be viscous by cane sugar and then adhered to the surface of a product for bonding, and the yellow and black color of the cane sugar after being boiled at a high temperature can influence the color of the caramel treats product; meanwhile, with the prolonging of the shelf life of the caramel treats, the caramel treats can be hardened, turned into sand, stuck in a bag and yellow, and the appearance and the taste of the caramel treats are influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a caramel treats syrup purification process based on polysaccharide fiber carbon degumming technology, which has the advantage of reducing the protein content in syrup.

In order to achieve the purpose, the invention provides the following technical scheme:

a caramel treats syrup purification process based on polysaccharide fiber charcoal degumming technology comprises the following steps:

s1, primary filtration: adding a filter aid into the syrup for primary filtration;

s2, secondary filtration: continuously adding active carbon into the filtered syrup for secondary filtration;

s3, ion exchange: introducing the filtered syrup in the S2 into a plurality of groups of ion exchange devices to remove impurity ions in the syrup;

and S4, adding the syrup subjected to ion exchange in the step S3 into a security filter for primary filtration, adding the collected filtrate into a membrane stack device, adding the obtained filtrate into an evaporator for evaporation, and finally obtaining the syrup.

By adopting the technical scheme, the cartridge filter can remove suspended matters and particles in syrup and reduce the damage of solid particles in the syrup to the filter element of the membrane stack device. A fiber carbon filter membrane is adopted in the membrane stack device; the fiber carbon filter membrane is a positive charge filter material, so that the main chain of the protein can be broken under the ionization action, thereby reducing the molecular mass of large protein molecules; meanwhile, the fiber carbon filter membrane can intercept small protein molecules in the syrup, so that the protein content in the syrup is reduced. When the protein content in the syrup is reduced, the phenomena of hardening, sand return, bag sticking and yellowing of the caramel treats during the prolonging of the shelf life can be reduced.

The invention is further configured to: the filter aid is perlite, and the addition amount of the filter aid is 20-40kg/75m syrup for heavy plantation; in the primary filtering process, the filtering temperature is 55-60 ℃ and the pressure is 0.2-0.4 MPa.

Through adopting above-mentioned technical scheme, the cockscomb structure's of pearlite granule surface filter cake can interlock each other and connect and form coarse filter gap, and the filter cake itself has the barrier effect to the particle, simultaneously because the existence of filter gap makes the pearlite have the infiltration ability. The perlite can decolorize the syrup and increase the transmittance of the syrup.

The invention is further configured to: in the secondary filtration process, the addition amount of activated carbon is 20-40kg/75m of the syrup for bearing the fruit and trees, the filtration temperature is 50-55 ℃, and the pressure is 0.2-0.4 MPa.

By adopting the technical scheme, the activated carbon has a stable structure, can remove harmful substances such as organic substances, heavy metals and bacteria, and can further decolor the syrup by the activated carbon to increase the transmittance of the syrup.

The invention is further configured to: the ion exchange devices are at least three groups, and at least one group of ion exchange devices is used for standby; each set of said ion exchange means comprises a cation exchange column and an anion exchange column; each cation exchange column is connected with an anion exchange column in series; cation exchange resin is arranged in the cation exchange column, and anion exchange resin is arranged in the anion exchange column.

By adopting the technical scheme, the syrup firstly enters the cation exchange column to be contacted with the cation exchange resin, and the impurity cations such as sodium ions, magnesium ions, calcium ions and the like in the syrup and the functional groups in the cation exchange resin are subjected to displacement reaction, so that the impurity ions are absorbed and displaced to obtain hydrogen ions. And then introducing the syrup into an anion exchange column to contact with anion exchange resin, and carrying out replacement reaction on impurity anions in the syrup and functional groups in the anion exchange resin so as to absorb the impurity anions and replace hydroxyl ions, thereby replacing the impurity ions in the syrup through the ion exchange column. When the first group of ion exchange column group is saturated with ion exchange resin due to multiple filtration, the third group of ion exchange column group can be opened to continue filtration so as not to influence the filtration efficiency.

The invention is further configured to: the specific process for removing impurity ions by ion exchange comprises the following steps: continuously introducing the filtered syrup in the S2 into an ion exchange device until the resin is saturated; injecting water from the bottom of the ion exchange column after ion exchange to remove the syrup; after the ion exchange is finished, the anion exchange resin and the cation exchange resin are respectively regenerated.

By adopting the technical scheme, the exchange and adsorption effects of the ion exchange device are utilized to remove inorganic salt, organic impurities and pigments in the sugar solution, when most of original ions fixed on the resin are replaced, the resin is invalid, the resin needs hydrochloric acid and sodium hydroxide for regeneration, active groups on the resin are reduced, and the generated ash can be discharged along with a regenerated solution and flushing.

The invention is further configured to: the specific process for regenerating the anion and cation exchange resin comprises the following steps: and (3) washing the cation exchange column by using dilute hydrochloric acid with the mass concentration of 5%, washing the anion exchange column by using sodium hydroxide with the mass concentration of 4% until the conductivity of the anion exchange column and the conductivity of the cation exchange column are less than or equal to 150 mu s/cm.

By adopting the technical scheme, when most of original ions fixed on the resin are replaced, the resin loses the adsorption function, the resin needs hydrochloric acid and sodium hydroxide for regeneration, so that active groups on the resin are reduced, and the generated ash can be discharged out of a system along with a regenerated solution and flushing.

The invention is further configured to: the number of the film stack devices is at least eight, and at least two groups of film stack devices are used for standby; four fiber carbon filter membranes are vertically and serially arranged in each membrane stack device.

By adopting the technical scheme, the main chain of the protein is broken through the fiber carbon filter membrane, so that the molecular mass of large protein molecules is reduced; meanwhile, the fiber carbon filter membrane can intercept small protein molecules in the syrup, so that the protein content in the syrup is reduced; the four fiber carbon filter membranes vertically arranged can reduce the possibility that small and medium protein molecules are filtered out along with the filtrate.

The invention is further configured to: the specific process for filtering by the membrane stack device is as follows: the pressure of feeding and discharging is less than or equal to 1.5bar, the temperature of cleaning water is more than or equal to 80 ℃, the time is more than or equal to 40 minutes, and the flushing flow rate is 1.5-2.0 times of the filtering flow rate.

By adopting the technical scheme, the filtering effect of the fiber carbon filter membrane on the protein is conveniently enhanced by setting the feeding and discharging pressure.

In summary, compared with the prior art, the invention has the following beneficial effects:

1. the syrup is subjected to decolorization treatment by perlite and activated carbon in sequence, so that the transmittance of the syrup is increased;

2. by arranging the ion exchange device, original ions carried in the ion exchange resin can replace impurity ions in the syrup, so that the impurity ions in the syrup are removed;

3. through setting up the membrane heap device, the small protein molecule in the syrup can be held back to the fibrous carbon filtration membrane to reduce the protein content in the syrup, reduce caramel treats and appear hardening, return sand, glue bag, yellow phenomenon when the shelf life extends.

Detailed Description