CN105077561B - In a kind of papermaking-method reconstituted tobaccos extract, the selectivity of Cu content reduces method - Google Patents
In a kind of papermaking-method reconstituted tobaccos extract, the selectivity of Cu content reduces method Download PDFInfo
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Abstract
The selectivity that the invention discloses Cu content in a kind of papermaking-method reconstituted tobaccos extract reduces method, it is characterized in that: the diluting compartment of electrodialysis plant will be introduced according to the tobacco extraction liquid prepared by papermaking-method reconstituted tobaccos production technology, carry out electrodialysis process fall low content of Cu, during fall low content of Cu, control de-Cu degree by the change of diluting compartment internal conductance rate or the actual content of Cu；In detection diluting compartment, nicotine content and organic acid total amount remove the selectivity of copper ion with investigation simultaneously.Low content of Cu can not only effectively drop in the present invention, can avoid nicotine and the loss of the predominantly organic acid of Nicotiana tabacum L. simultaneously, farthest ensure that the sucking quality of reconstituted tobacco.
Description
Technical field
The selectivity that the present invention relates to a kind of papermaking-method reconstituted tobaccos Cu content reduces method, belongs to papermaking-method reconstituted tobaccos and produces
Technical field.
Background technology
In recent years, along with the aggravation of smoking with healthy contradiction, the safety of sucking of Medicated cigarette has become as the research that Nicotiana tabacum L. science is important
Direction.Nicotiana tabacum L. is affected owing to being planted feature by the pollution of its growing environment and Nicotiana tabacum L. self, all can contain an a certain amount of huge sum of money
The harmful elements such as genus, if Cu is the composition of CuO-2 layer in Nicotiana tabacum L., play an important role in the oxidation-reduction process of cigarette strain,
To delaying chlorophyllous aging, strengthening plant resistance has certain effect.In Medicated cigarette, harmful element Cu is mainly by the flue gas of burning
Enter human body, health is produced harm.In 107 kinds of cigarette smoke harmful components of U.S. 1989 report, copper, arsenic,
Cadmium, chromium, lead, nickel, hydrargyrum and zinc etc. are in the row impressively, therefore reduce the Cu content in Nicotiana tabacum L. and flue gas and contribute to promoting Medicated cigarette suction
The safety of food.
Papermaking-method reconstituted tobaccos is the filamentary tobacco of a kind of restructuring, and it has, and burn rate is fast, releasing content of coke tar is low, Filling power is high
And the feature such as degrading resistance property is good, its chemical constituent and the Modulatory character of physical parameter are its of paramount importance features, but work as
Before still lack the method for the heavy metal element effectively reduced in reconstituted tobacco self and flue gas thereof.The Cu reduced in Medicated cigarette at present contains
Amount mainly has process, optimizes Cigarette processing parameters of technique process method as Chinese patent CN101946981A discloses employing
Reduce the content of heavy metal Cu, reduce 10% in the loose operation of microwave, reduce 19.92% at silk producing procedures, HT+ dries
Wire process reduces 12.95%, and whole operation co-falling is low by 42.87%, but the method does not investigate the reduction effect of nicotine and organic acid
Really.The effective removal methods of heavy metal also include flocculence, oxidation-reduction method, electrolysis, solvent extraction and separation method, absorption method,
Electroosmose process and emerging biologic treating technique etc., wherein flocculence, oxidation-reduction method, electrolysis, solvent extraction and separation method
Need in solution to be purified, add other chemical substance, be not suitable for the purification technique as heavy metal ions from tobacco extract；
The treatment effeciency of absorption method and ion exchange is limited；Biologic treating technique operation is more complicated, and intractability is bigger；And electric osmose
Analysis method has that energy expenditure is low, operate the advantages such as easy to maintenance, environmental pollution is little, than be well suited in tobacco extraction liquid heavy metal from
The removal of son.In addition electrodialytic technique is as one efficient desalination means, its taking off the ionic compound in tabacco water extract
Except efficiency is the highest, as CN103082394A, CN103330277A and US4302308A, US4253929 utilize electric osmose
Analysis method removes the chloride ion in tobacco extract or reconstituted tobacco extract, nitrate ion, but these patents all do not investigate right
The removal effect of Cu.Containing nonionic active component (such as: fructose, glucose, pectin etc.) and ion in tobacco extraction liquid
Type active component (such as nicotine), wherein nicotine is the of paramount importance functional component of Nicotiana tabacum L..Although common electrodialytic technique can realize
Chloride ion, nitrate ion plasma compound are relative to the selective removal of nonionic compound, but also typically result in Nicotiana tabacum L.
A large amount of losses of ion-type active component (nicotine and organic acid), this will cause smoking property of cigarette quality to decline.Xiang Haiying etc. make
Use IONSEPTMWhile ion exchange membrane removes removing chloride, find nicotine also reduce by more than 50% (in stem extracting solution chlorine from
The electroosmose process removing of son, Nicotiana tabacum L. science and technology, 2015,1:72-75).Therefore, tobacco extraction liquid intermediate ion removal efficiency is being improved
Meanwhile, the effective ingredient (nicotine and organic acid) how being effectively retained Nicotiana tabacum L. is that electrodialysis process tobacco extraction liquid is urgently to be resolved hurrily
Key issue, is also electrodialytic technique key problem in technology of application in papermaking-method reconstituted tobaccos produces.
Summary of the invention
A kind of production technology letter that the present invention be directed to a large amount of losing issue of nicotine existing for above-mentioned existing electrodialytic technique and develop
The Cu selective regulation method single, controllability is strong, can be widely applied in papermaking-method reconstituted tobaccos extract, makes Cu content select
Selecting property reduces, and is prevented effectively from the loss of nicotine and organic acid, while fall low content of Cu, significantly improves paper-making method reconstructed
Nicotiana tabacum L. sucking quality.
The use that the present invention passes through film by univalent anion selectivity efficiently reduces Cu content in tobacco extraction liquid, and effectively keeps away
Exempt from the loss of nicotine and organic acid, it is achieved that the selectivity that Cu content reduces.
The present invention solves technical problem, adopts the following technical scheme that
In papermaking-method reconstituted tobaccos extract of the present invention, the selectivity of Cu content reduces method, is characterized in:
A, will according to prepared by papermaking-method reconstituted tobaccos production technology tobacco extraction liquid introduce electrodialysis plant diluting compartment, and
Enriched chamber adds water or electrolyte；The solid content of described tobacco extraction liquid is 7-10%.
The anion exchange membrane of described electrodialysis plant is that univalent anion selectivity passes through film, the preferably homogeneous sun of cation exchange membrane
Ion exchange membrane.
The step preparing tobacco extraction liquid according to papermaking-method reconstituted tobaccos production technology is: by papermaking-method reconstituted tobaccos raw material (cabo,
Nicotiana tabacum L. and/or offal) add in agitator tank, add the water of 4-10 times of weight, stirring is extracted 1 hour, uses Double screw pulp extruder
Carrying out solid-liquid separation, obtained tabacco water solution shakes sieve coarse filtration through 80-120 purpose, then at 2500-3500rmb rotating speed
Under the conditions of centrifugation, clear liquid is the tobacco extraction liquid needed for electrodialysis process.
B, under constant current conditions tobacco extraction liquid is carried out electrodialysis process removing Cu ion, i.e. carry out decopper(ing) process；Electricity
The flow that dialysis processes is 4-8L/min；Constant current density is 15-30mA/cm2。
C, in decopper(ing) processing procedure change or the actual content of Cu by diluting compartment internal conductance rate control degree for the treatment of；
Simultaneously in detection diluting compartment nicotine content and organic acid total amount (including citric acid, oxalic acid and malic acid) to investigate what decopper(ing) processed
Selectivity；
D, by the tobacco extraction liquid after decopper(ing) according to papermaking-method reconstituted tobaccos production technology proceed process, for reconstituted tobacco
Processing.
Under usual condition, tobacco extract is acidity, and its pH scope is about 4.5-6.5, and nicotine therein is mainly with monovalent salt
Form exists.In theory, nicotine can pass through monovalence selective ion exchange membrane, but experiment finds: in electrodialytic process
Nicotine is not by univalent anion selectivity through film, and this ionic hydration radius being mainly likely due to nicotine anion is big,
Univalent anion selectivity has physical preferences through film to it.Thus, the present invention can be passed through by univalent anion selectivity
The use of film, in efficiently reduction tobacco extraction liquid while Cu content, effectively prevent the loss of nicotine and organic acid, real
The selectivity having showed Cu content reduces.
Compared with the prior art, the present invention has the beneficial effect that:
1, low content of Cu can not only effectively drop in the present invention, can avoid nicotine and the loss of the predominantly organic acid of Nicotiana tabacum L. simultaneously, and lifting is made
The quality of paper method reconstituted tobacco extract, farthest ensure that the sucking quality of reconstituted tobacco.
2, production technology of the present invention is simple, controllability strong, steady quality, can be widely applied in papermaking-method reconstituted tobaccos extract
The selectivity of Cu content reduces.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail
Embodiment 1:
Prepare tobacco extraction liquid with Nicotiana tabacum L. for raw material, the tobacco extraction liquid that 450mL solid content is 8% is loaded and is provided with 10
To ion exchange membrane, (wherein cavity block is SelemionTMUnivalent anion selectivity passes through film, and anode membrane is SelemionTMMonovalence sun from
Sub-selectivity pass through film, effective area is 1 square metre) electrodialysis plant diluting compartment in, and in enriched chamber add 500mL
Tap water；At 15mA/cm2Constant current density under the conditions of, carry out electrodialysis process 40min under the flow of 5L/min.
After tested, after process, in diluting compartment, the electrical conductivity of tobacco extraction liquid is reduced to 7.68mS/cm by initial 14.25mS/cm.
Being provided with 10 pairs of conventional ion exchange membranes, (anion exchange membrane is homogeneous-phase anion exchange film CJA-2, cation exchange membrane
For homogeneous phase cation exchange film CJC-2, Hefei Ke Jia macromolecular material Science and Technology Ltd. manufactures) electrodialysis plant in carry out phase
With the electrodialysis process contrast test of tobacco extraction liquid, test parameters is in addition to ion exchange membrane difference used, and other parameter is the most identical.
After two kinds of membrane stacks process, in diluting compartment, the chemical analysis results of tobacco extraction liquid is shown in Table 1, and result shows: equal with common
Phase ion exchange membrane is compared, and monovalent ion selectivity is realizing on the premise of Cu content substantially reduces through film, and Cu can be greatly improved
Content is relative to the selectivity of nicotine, it is to avoid a large amount of losses of nicotine, simultaneously organic acid (mainly include citric acid, oxalic acid and
Malic acid) have also been obtained preferably reservation.
The evaluation result of papermaking-method reconstituted tobaccos prepared by the tobacco extraction liquid after being processed by using two kinds of electrodialysis membrane stacks shows: with
The non-selective removal comparison using common homogeneous ion-exchange membrane is compared, after monovalent ion selectivity is through film selective removal
Papermaking-method reconstituted tobaccos suck strength and burn rate is all obviously improved, and organoleptic quality entirety is improved.
Table 1
Embodiment 2:
Prepare tobacco extraction liquid with cabo for raw material, the tobacco extraction liquid that 500mL solid content is 8% is loaded and is provided with 10
To ion exchange membrane, (wherein cavity block is SelemionTMUnivalent anion selectivity passes through film；Cation exchange membrane is that CJC-2 is homogeneous
Cation exchange membrane, Hefei Ke Jia macromolecular material Science and Technology Ltd. manufacture) electrodialyzer diluting compartment in；Enriched chamber adds
Enter the sodium sulfate of 1.0mol/L of 500mL as initial electrolyte；At 25mA/cm2Constant current density under the conditions of carry out electricity
Dialysis processes 35min.After tested, after process, in diluting compartment, the electrical conductivity of tobacco extraction liquid is reduced to by initial 16.38mS/cm
4.5mS/cm。
Being provided with 10 pairs of conventional ion exchange membranes, (anion exchange membrane is homogeneous-phase anion exchange film CJA-2, cation exchange membrane
For homogeneous phase cation exchange film CJC-2, Hefei Ke Jia macromolecular material Science and Technology Ltd. manufactures) electrodialyzer in carry out identical
The electrodialysis process contrast test of tobacco extraction liquid, outside test parameters deionization exchange membrane, other parameter is the most identical.
After two kinds of membrane stacks process, in diluting compartment, the chemical analysis results of tobacco extraction liquid is shown in Table 2, and result shows: equal with common
Phase anion exchange membrane is compared, and univalent anion selectivity is realizing on the premise of Cu content substantially reduces through film, can significantly carry
High Cu content is relative to the selectivity of nicotine, it is to avoid a large amount of losses of nicotine, organic acid have also been obtained preferably reservation simultaneously.
The evaluation result of papermaking-method reconstituted tobaccos prepared by the tobacco extraction liquid after being processed by using two kinds of electrodialysis membrane stacks shows: with
The Cu ion non-selective removal comparison using common homogeneous-phase anion exchange film is compared, and selects through film through univalent anion selectivity
The strength of sucking of the papermaking-method reconstituted tobaccos after the removal of selecting property is obviously improved, and the organoleptic indicator such as pleasant impression and zest is improved.
Comparative example 1 and embodiment 2 also know that, the anion exchange membrane at electrodialysis plant selects univalent anion selectivity saturating
In the case of crossing film, cation exchange membrane selects homogeneous phase cation exchange film ratio to select the monovalent cation selectivity effect through film
Better, relatively monovalent cation selectivity passes through film, and the use of homogeneous phase cation exchange film can improve removal efficiency and the selection thereof of Cu
Property.
Table 2
Claims (4)
1. in papermaking-method reconstituted tobaccos extract, the selectivity of Cu content reduces a method, it is characterized in that:
A, will according to prepared by papermaking-method reconstituted tobaccos production technology tobacco extraction liquid introduce electrodialysis plant diluting compartment, and
Enriched chamber adds water or electrolyte；The anion exchange membrane of described electrodialysis plant is that univalent anion selectivity is through film；
B, under the conditions of constant current density, tobacco extraction liquid is carried out electrodialysis process removing Cu ion, i.e. carry out decopper(ing) process；
C, in decopper(ing) processing procedure change or the actual content of Cu by diluting compartment internal conductance rate control decopper(ing) degree；
The selectivity that in detection diluting compartment, nicotine content and organic acid total amount process with investigation decopper(ing) simultaneously；
D, by the tobacco extraction liquid after decopper(ing) according to papermaking-method reconstituted tobaccos production technology proceed process, for reconstituted tobacco
Processing.
In papermaking-method reconstituted tobaccos extract the most according to claim 1, the selectivity of Cu content reduces method, its feature
It is: the solid content of described tobacco extraction liquid is 7-10%.
In papermaking-method reconstituted tobaccos extract the most according to claim 1, the selectivity of Cu content reduces method, its feature
It is: the cation exchange membrane of described electrodialysis plant is homogeneous phase cation exchange film.
In papermaking-method reconstituted tobaccos extract the most according to claim 1, the selectivity of Cu content reduces method, its feature
It is: the flow of electrodialysis process described in step b is 4-8L/min；Constant current density is 15-30mA/cm2。
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