Patent Application
20230055122
The present invention relates to a technology that jellifies a specimen (for example, exfoliative cells of a human body) in a vial, safely transports the specimen to an examination center, restores the specimen to its original state (for example, conversion into liquid phase) in the examination center, and conducts examination of the specimen.
More specifically, the present invention relates to a technology that converts a liquid for specimen preservation contained in a vial into a jelly state, safely transports the specimen to an examination center without deformation, redissolves the liquid for specimen preservation into a liquid phase at the examination center, and conducts examination of the specimen.
In general, the state of exfoliative cells can be observed for diagnosis after a specimen (exfoliative cells) is obtained from the human body and then the exfoliative cells are spread on the slide for cytodiagnosis at the examination center.
Here, patients who have difficulty visiting the examination center should collect their own exfoliative cells (specimen) and then have the exfoliative cells transported to the examination center in a state in which the exfoliative cells are intact. To this end, the specimen may be put in a vial, which is an airtight container, together with the liquid for cell fixation to protect the specimen and transported to the examination center.
The liquid for cell fixation filled in the vial to prevent specimen deformation is generally composed of an aqueous solution. In the process of transporting the vial, the liquid for cell fixation frequently leaks through the gap between the body and the cap of the vial, and this may cause deformation of the specimen.
It is required to develop a technology capable of solving such problems of the prior art.
Meanwhile, the prior literatures related to the present invention are as follows.
(1) EP 0511430 A2 (Nov. 4, 1992) “Cell preservative solution”
(2) US 2006/0088814 A1 (Apr. 27, 2006) “Enhanced cell preservative solution and methods for using same”
(3) Korean Patent Application Laid-Open No. 10-2005-0116689 (Dec. 13, 2005) “Gel preservative, method for preparing the same, and cell examining method using the same”
The present invention has been proposed in view of the above points, and an object thereof is to provide a cell examining method using jellification of an alcohol-based solution composition, by which a specimen (for example, exfoliative cells of a human body) contained in a vial is jellified with an alcohol-based solution composition so that the specimen can be safely transported over a long distance and is easily restored to its original state when cell examination is conducted at an examination center.
In order to achieve the object, the cell examining method using jellification of an alcohol-based solution composition according to the first embodiment of the present invention may be configured to include (a) mixing any one solution selected from a first solution containing 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution or a second solution containing 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive with any one material selected from 5 to 20 parts by weight of one or more of gelatin or a photocurable protein, 1 to 100 parts by weight of a natural cellulose polymer material, or 1 to 100 parts by weight of synthesized acrylic polymer material beads at a temperature of 1° C. to 40° C. for jellification to produce an alcohol-based jelly-like material; (b) putting a collected specimen inside an airtight container containing the alcohol-based jelly-like material; (d) adding the jellified alcohol-based jelly-like material in the airtight container to a solution for redissolution; (e) maintaining the solution for redissolution at a temperature of 1° C. to 40° C. to redissolve the alcohol-based jelly-like material into a liquid phase; and (f) obtaining the specimen from the alcohol-based jelly-like material in a redissolved state and examining the specimen.
The cell examining method using jellification of an alcohol-based solution composition according to the second embodiment of the present invention may be configured to include (a) putting any one solution (hereinafter referred to as ‘selected solution’) selected from a first solution containing 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution or a second solution containing 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive into an airtight container; (b) putting a specimen inside the airtight container filled with the selected solution; (c) putting any one material selected from 5 to 20 parts by weight of one or more of gelatin or a photocurable protein, 1 to 100 parts by weight of a natural cellulose polymer material, or 1 to 100 parts by weight of synthesized acrylic polymer material beads inside the airtight container in a state of containing the selected solution and the specimen at a temperature of 1° C. to 40° C. and jellifying the mixture into an alcohol-based jelly-like material; (d) adding the jellified alcohol-based jelly-like material in the airtight container to a solution for redissolution; (e) maintaining the solution for redissolution at a temperature of 1° C. to 40° C. to redissolve the jellified alcohol-based jelly-like material into a liquid material; and (f) obtaining the specimen from the liquid material in a redissolved state and examining the specimen.
At this time, step (d) may include a step of preparing a solution for redissolution configured to contain 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution.
In addition, step (d) may include a step of preparing a solution for redissolution configured to contain 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive.
The present invention has an advantage that the jellification of a liquid for cell fixation filled inside a vial is simple since the liquid for cell fixation is jellified by mixing the selected solution and the selected material.
The present invention has an advantage that the leakage of a liquid for cell fixation from a vial can be prevented during long-distance transport by the jellification of the liquid for cell fixation.
The present invention also has an advantage that conversion from a jellified state into a liquid phase for cell examination is simple.
Hereinafter, the present invention will be described in detail.
At this time, the vial 10 may be fabricated by extruding a resin containing an antioxidant since the alcohol component may be oxidized when the vial 10 is exposed to light or oxygen in a state of containing the liquid for cell fixation. The vial 10 may also be fabricated to be translucent by adding a light blocking dye.
It may be possible to prevent the exposure to oxygen or light by adopting an opaque pouch-type packaging material as the container containing the liquid for cell fixation.
Meanwhile, the specimen portion not submerged in the liquid for cell fixation may be damaged in the process of putting the specimen-collected brush tip (not illustrated) inside the vial 10. It is thus preferable that the vial 10 is fabricated in a size that can completely accommodate the brush tip. It is also preferable to fully fill the liquid for cell fixation in the vial 10 in a state in which the specimen-collected brush tip is placed inside the vial 10.
Conventionally, when the liquid for cell fixation in the form of an aqueous solution was filled in the vial 10 together with the specimen, a problem of specimen deformation due to leakage during long-distance transport has occurred. In order to solve this problem, the present invention provides a composition capable of jellifying the liquid for cell fixation. In other words, when the liquid for cell fixation is jellified, the possibility of leakage or evaporation is low, and the original state of specimen can be maintained.
Here, the liquid for cell fixation contained in the vial 10 is transported to the examination center in a jelly state, and the jellified state is maintained by maintaining the vial 10 in the low temperature state of room temperature or below during the transporting process.
First, the vial 10 is mounted on a table member 21 of the stirrer for jellification 20. In this state, the stirrer for jellification 20 is operated to position the table member 21 under an injection member 22, and the jelly composition is filled in the vial 10 as the jelly composition is dropped downward from the injection member 22.
The jelly composition in the vial 10 may be thoroughly mixed by operating the stirrer for jellification 20 and thus reciprocating the table member 21 in the direction of the arrow in
To this end, the vial 10 is mounted on a table member 31 of the stirrer for redissolution 30. In this state, the stirrer for redissolution 30 is operated to position the table member 31 under an injection member 32, and the alcohol-based jelly-like material in the vial 10 is reconverted into a liquid phase as the solution for redissolution is dropped downward from the injection member 32.
At this time, the solution for redissolution in the vial 10 may be thoroughly mixed with the jelly composition by operating the stirrer for redissolution 30 and thus reciprocating the table member 31 in the direction of the arrow in
In the present specification, the stirrer for jellification 20 of
Step S110: First, any one solution (hereinafter referred to as ‘selected solution’) is selected from the first solution containing 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA (ethylenediaminetetraacetic acid), 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution or the second solution containing 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive.
In addition, any one material (hereinafter referred to as ‘selected material’) is selected from 5 to 20 parts by weight of one or more of gelatin or a photocurable protein (gelatin methacryloly; GelMA), 1 to 100 parts by weight of a natural cellulose polymer material, or 1 to 100 parts by weight of synthesized acrylic polymer material beads.
Subsequently, the selected solution and the selected material are put into the vial 10 and then mixed at a temperature of 1° C. to 40° C. for jellification to produce an alcohol-based jelly-like material.
At this time, when the temperature around the vial 10 is as low as less than 1° C., the gelatin, photocurable protein, natural cellulose polymer material, and synthesized acrylic polymer beads in the vial 10 do not dissolve, resulting in poor gelation or jellification.
When the temperature around the vial 10 is as high as more than 40° C., the alcohol-based components having low boiling points evaporate, thus changes in the physical properties of the entire composition are caused, and the specimen fixing ability of the cell fixing means is too strong or weak.
Step S120: Next, a specimen is put inside the vial 10 containing the alcohol-based jelly-like material. At this time, it is preferable that the vial 10 is fabricated in a size that can completely accommodate the specimen-collected brush tip (not illustrated) so that the brush tip is safely placed inside the vial 10.
The vial 10 in the state of containing the specimen in this way is transported to the examination center. During the transporting process, the vial 10 is required to be maintained in a low temperature state of room temperature or below to prevent the conversion of the jelly state into a liquid phase.
When the vial 10 in the state of containing the specimen is transported, the specimen is required to be taken out from the vial 10 and subjected to the cell examination at the examination center. At this time, in order to safely take out the specimen from the vial 10 without deformation, the cell fixing means in the vial 10 is required to be reconverted into a liquid phase.
Steps S130 and S140: The jellified alcohol-based jelly-like material in the vial 10 may be redissolved into a liquid phase by adding the alcohol-based jelly-like material to the solution for redissolution and then maintaining the solution for redissolution at a temperature of 1° C. to 40° C.
At this time, an embodiment is possible in which the solution for redissolution is dropped inside the vial 10 while the vial 10 containing the jelly-like material and the specimen is mounted on the mechanism of the stirrer for redissolution 30 as in
Meanwhile, the solution for redissolution in the first embodiment of the present invention may be configured to contain 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution.
The solution for redissolution in the first embodiment of the present invention may also be configured to contain 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive.
Step S150: As in
In the first embodiment of the present invention, the selected solution is selected from the first solution containing 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution or the second solution containing 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive. The selected material is selected from 5 to 20 parts by weight of one or more of gelatin or a photocurable protein, 1 to 100 parts by weight of a natural cellulose polymer material, or 1 to 100 parts by weight of synthesized acrylic polymer material beads.
The physical properties depending on the composition ratio were examined for the first embodiment of the present invention as described above, and the influence of an individual component on the physical properties of the entire composition was examined while varying the mixing ratio of the individual component.
Table 1 presents the experimental conditions in which the mixing ratio of only the aqueous methanol solution is varied while the mixing ratios of other components are fixed in the first embodiment of the present invention.
Table 2 presents the experimental conditions in which the mixing ratio of only EDTA is varied while the mixing ratios of other components are fixed in the first embodiment of the present invention.
Table 3 presents the experimental conditions in which the mixing ratio of only cholic acid is varied while the mixing ratios of other components are fixed in the first embodiment of the present invention.
Table 4 presents the experimental conditions in which the mixing ratio of only the 1 N aqueous acetic acid solution is varied while the mixing ratios of other components are fixed in the first embodiment of the present invention.
Table 5 presents the experimental conditions in which the mixing ratio of only gelatin is varied while the mixing ratios of other components are fixed in the first embodiment of the present invention.
In Tables 1 to 5, in Examples (A1 to A5, B1 to B5, and C1 to C5), the fixing ability of the jellified cell fixing means was favorable. On the other hand, in Comparative Examples (a1 to a5 and b1 to b5), the ability to fix the specimen inside the vial 10 was too strong or weak. Therefore, in Comparative Examples, a problem (for example, specimen deformation) occurred in the process (for example, redissolution) of taking out the specimen from the vial 10.
With regard to the first embodiment of the present invention, experiments were conducted in addition to those presented in Tables 1 to 5, but the description of other experiments has been omitted for convenience of explanation.
Meanwhile, in the alcohol-based jelly-like material according to the first embodiment of the present invention, 5 to 20 parts by weight of any one or more of gelatin or a photocurable protein may be substituted with 1 to 100 parts by weight of a natural cellulose polymer (for example, mecellose or hecellose) or 1 to 100 parts by weight of synthesized acrylic polymer beads (for example, methyl methacrylate-co-ethylene glycol dimethacrylate; MMA).
Here, with regard to the natural cellulose polymer as well, an experiment was conducted in mixing ratio ranges of the natural cellulose polymer of less than 1 part by weight and more than 100 parts by weight as Comparative Examples while the mixing ratios of other components were fixed, and as a result, the ability to fix the specimen inside the vial 10 was not favorable in the region outside of 1 to 100 parts by weight.
In addition, with regard to the synthesized acrylic polymer beads as well, an experiment was conducted in mixing ratio ranges of the synthesized acrylic polymer beads of less than 1 part by weight and more than 100 parts by weight as Comparative Examples while the mixing ratios of other components were fixed, and as a result, the ability to fix the specimen inside the vial 10 was not favorable in the region outside of 1 to 100 parts by weight.
Meanwhile, the solution for redissolution used in step S130 in the first embodiment of the present invention may be configured to contain 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution (hereinafter referred to as ‘first solution for redissolution’).
The physical properties depending on the composition ratio of such a first solution for redissolution were examined in the first embodiment of the present invention, and the influence of an individual component on the physical properties of the entire composition was examined while varying the mixing ratio of the individual component.
Table 6 presents the experimental conditions in which the mixing ratio of only the aqueous methanol solution is varied while the mixing ratios of other components are fixed in the redissolving process using the first solution for redissolution in the first embodiment of the present invention.
Table 7 presents the experimental conditions in which the mixing ratio of only EDTA is varied while the mixing ratios of the components are fixed in the redissolving process using the first solution for redissolution in the first embodiment of the present invention.
Table 8 presents the experimental conditions in which the mixing ratio of only cholic acid is varied while the mixing ratios of other components are fixed in the redissolving process using the first solution for redissolution in the first embodiment of the present invention.
Table 9 presents the experimental conditions in which the mixing ratio of only the 1 N aqueous acetic acid solution is varied while the mixing ratios of other components are fixed in the redissolving process using the first solution for redissolution in the first embodiment of the present invention.
In Tables 6 to 9, in Examples (A6 to A9, B6 to B9, and C6 to C9), there was no particular problem in the process (for example, redissolution) of taking out the specimen from the vial 10. On the other hand, in Comparative Examples (a6 to a9 and b6 to b9), a problem (for example, specimen deformation) occurred in the process (for example, redissolution) of taking out the specimen from the vial 10.
Meanwhile, the solution for redissolution in the first embodiment of the present invention may be configured to contain 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive (hereinafter referred to as ‘second solution for redissolution’).
The physical properties depending on the composition ratio of such a second solution for redissolution were examined in the first embodiment of the present invention, and the influence of an individual component on the physical properties of the entire composition was examined while varying the mixing ratio of the individual component.
Table 10 presents the experimental conditions in which the mixing ratio of only the aqueous ethanol solution is varied while the mixing ratios of other components are fixed in the redissolving process using the second solution for redissolution in the first embodiment of the present invention.
Table 11 presents the experimental conditions in which the mixing ratio of only EDTA is varied while the mixing ratios of other components are fixed in the redissolving process using the second solution for redissolution in the first embodiment of the present invention.
Table 12 presents the experimental conditions in which the mixing ratio of only the dihydric alcohol additive is varied while the mixing ratios of other components are fixed in the redissolving process using the second solution for redissolution in the first embodiment of the present invention.
In Tables 10 to 12, in Examples (A10 to A12, B10 to B12, and C10 to C12), there was no particular problem in the process (for example, redissolution) of taking out the specimen from the vial 10. On the other hand, in Comparative Examples (a10 to a12 and b10 to b12), a problem (for example, specimen deformation) occurred in the process (for example, redissolution) of taking out the specimen from the vial 10.
Step S210: First, any one solution (hereinafter referred to as ‘selected solution’) is selected from the first solution containing 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution or the second solution containing 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive, and then the selected solution is put into the vial 10.
Step S220: Next, a specimen is put inside the vial 10. At this time, it is preferable that the vial 10 is fabricated in a size that can completely accommodate the brush tip.
Step S230: Subsequently, any one material (hereinafter referred to as ‘selected material’) is selected from 5 to 20 parts by weight of one or more of gelatin or a photocurable protein, 1 to 100 parts by weight of a natural cellulose polymer material, or 1 to 100 parts by weight of synthesized acrylic polymer material beads.
Subsequently, the selected material is put inside the vial 10 in the state of containing the specimen while the temperature around the vial 10 is maintained at a temperature of 1° C. to 40° C., and the mixture is jellified into an alcohol-based jelly-like material.
At this time, when the temperature around the vial 10 is as low as less than 1° C., the gelatin, photocurable protein, natural cellulose polymer material, and synthesized acrylic polymer in the vial 10 do not dissolve, resulting in poor gelation or jellification.
When the temperature around the vial 10 is as high as more than 40° C., the alcohol-based components having low boiling points evaporate, thus changes in the physical properties of the entire composition are caused, and the specimen fixing ability of the cell fixing means is too strong or weak.
Thereafter, the vial 10 in the state of containing the specimen is transported to the examination center. During the transporting process, the vial 10 is required to be maintained in a low temperature state of room temperature or below to prevent the conversion of the jelly state into a liquid phase.
When the vial 10 in the state of containing the specimen is transported, the specimen is required to be taken out from the vial 10 and subjected to the cell examination at the examination center. At this time, in order to safely take out the specimen from the vial 10 without deformation, the cell fixing means in the vial 10 is required to be reconverted into a liquid phase.
Steps S240 and S250: The jellified alcohol-based jelly-like material in the vial 10 may be redissolved into a liquid phase by adding the alcohol-based jelly-like material to the solution for redissolution and then maintaining the solution for redissolution at a temperature of 1° C. to 40° C.
At this time, an embodiment is possible in which the solution for redissolution is dropped inside the vial 10 while the vial 10 containing the jelly-like material and the specimen is mounted on the mechanism of the stirrer for redissolution 30 as in
Meanwhile, the solution for redissolution in the second embodiment of the present invention may be configured to contain 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution.
The solution for redissolution in the second embodiment of the present invention may also be configured to contain 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive.
Step S260: As in
In the second embodiment of the present invention, the selected solution is selected from the first solution containing 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution or the second solution containing 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive. The selected material is selected from 5 to 20 parts by weight of one or more of gelatin or a photocurable protein, 1 to 100 parts by weight of a natural cellulose polymer material, or 1 to 100 parts by weight of synthesized acrylic polymer material beads.
The physical properties depending on the composition ratio were examined for the second embodiment of the present invention as described above, and the influence of an individual component on the physical properties of the entire composition was examined while varying the mixing ratio of the individual component.
Table 13 presents the experimental conditions in which the mixing ratio of only the aqueous ethanol solution is varied while the mixing ratios of other components are fixed in the second embodiment of the present invention.
Table 14 presents the experimental conditions in which the mixing ratio of only EDTA is varied while the mixing ratios of other components are fixed in the second embodiment of the present invention.
Table 15 presents the experimental conditions in which the mixing ratio of only the dihydric alcohol additive is varied while the mixing ratios of other components are fixed in the second embodiment of the present invention.
Table 16 presents the experimental conditions in which the mixing ratio of only gelatin is varied while the mixing ratios of other components are fixed in the second embodiment of the present invention.
In Tables 13 to 16, in Examples (A13 to A16, B13 to B16, and C13 to C16), the fixing ability of the jellified cell fixing means was favorable. On the other hand, in Comparative Examples (a13 to a16 and b13 to b16), the ability to fix the specimen inside the vial 10 was too strong or weak. Therefore, in Comparative Examples, a problem (for example, specimen deformation) occurred in the process (for example, redissolution) of taking out the specimen from the vial 10.
With regard to the second embodiment of the present invention, experiments were conducted in addition to those presented in Tables 13 to 16, but the description of other experiments has been omitted for convenience of explanation.
Meanwhile, in the second embodiment of the present invention, 5 to 20 parts by weight of any one or more of gelatin or a photocurable protein may be substituted with 1 to 100 parts by weight of a natural cellulose polymer (for example, mecellose or hecellose) or 1 to 100 parts by weight of synthesized acrylic polymer beads (for example, methyl methacrylate-co-ethylene glycol dimethacrylate; MMA).
Here, with regard to the natural cellulose polymer as well, an experiment was conducted in mixing ratio ranges of the natural cellulose polymer of less than 1 part by weight and more than 100 parts by weight as Comparative Examples while the mixing ratios of other components were fixed, and as a result, the ability to fix the specimen inside the vial 10 was not favorable in the region outside of 1 to 100 parts by weight.
In addition, with regard to the synthesized acrylic polymer beads as well, an experiment was conducted in mixing ratio ranges of the synthesized acrylic polymer beads of less than 1 part by weight and more than 100 parts by weight as Comparative Examples while the mixing ratios of other components were fixed, and as a result, the ability to fix the specimen inside the vial 10 was not favorable in the region outside of 1 to 100 parts by weight.
Meanwhile, the solution for redissolution used in step S240 in the second embodiment of the present invention may be configured to contain 30 to 60 parts by weight of an aqueous methanol solution, 0.1 to 0.2 parts by weight of EDTA, 0.01 to 0.05 parts by weight of cholic acid, and 0.05 to 0.1 parts by weight of a 1 N aqueous acetic acid solution (hereinafter referred to as ‘third solution for redissolution’).
The physical properties depending on the composition ratio of such a third solution for redissolution were examined in the second embodiment of the present invention, and the influence of an individual component on the physical properties of the entire composition was examined while varying the mixing ratio of the individual component.
Table 17 presents the experimental conditions in which the mixing ratio of only the aqueous methanol solution is varied while the mixing ratios of other components are fixed in the redissolving process using the third solution for redissolution in the second embodiment of the present invention.
Table 18 presents the experimental conditions in which the mixing ratio of only EDTA is varied while the mixing ratios of other components are fixed in the redissolving process using the third solution for redissolution in the second embodiment of the present invention.
Table 19 presents the experimental conditions in which the mixing ratio of only cholic acid is varied while the mixing ratios of other components are fixed in the redissolving process using the third solution for redissolution in the second embodiment of the present invention.
Table 20 presents the experimental conditions in which the mixing ratio of only the 1 N aqueous acetic acid solution is varied while the mixing ratios of other components are fixed in the redissolving process using the third solution for redissolution in the second embodiment of the present invention.
At this time, in Tables 17 to 20, in Examples (A17 to A20, B17 to B20, and C17 to C20), there was no particular problem in the process (for example, redissolution) of taking out the specimen from the vial 10. On the other hand, in Comparative Examples (a17 to a20 and b17 to b20), a problem (for example, specimen deformation) occurred in the process (for example, redissolution) of taking out the specimen from the vial 10.
Meanwhile, the solution for redissolution in the second embodiment of the present invention may be configured to contain 40 to 50 parts by weight of an aqueous ethanol solution, 0.1 to 0.2 parts by weight of EDTA, and 0.2 to 1 part by weight of a dihydric alcohol additive (hereinafter referred to as ‘fourth solution for redissolution’).
The physical properties depending on the composition ratio of such a fourth solution for redissolution were examined in the second embodiment of the present invention, and the influence of an individual component on the physical properties of the entire composition was examined while varying the mixing ratio of the individual component.
Table 21 presents the experimental conditions in which the mixing ratio of only the aqueous ethanol solution is varied while the mixing ratios of other components are fixed in the redissolving process using the fourth solution for redissolution in the second embodiment of the present invention.
Table 22 presents the experimental conditions in which the mixing ratio of only EDTA is varied while the mixing ratios of other components are fixed in the redissolving process using the fourth solution for redissolution in the second embodiment of the present invention.
Table 23 presents the experimental conditions in which the mixing ratio of only the dihydric alcohol additive is varied while the mixing ratios of other components are fixed in the redissolving process using the fourth solution for redissolution in the second embodiment of the present invention.
In Tables 21 to 23, in Examples (A21 to A23, B21 to B23, and C21 to C23), there was no particular problem in the process (for example, redissolution) of taking out the specimen from the vial 10. On the other hand, in Comparative Examples (a21 to a23 and b21 to b23), a problem (for example, specimen deformation) occurred in the process (for example, redissolution) of taking out the specimen from the vial 10.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2020-0052928 | Apr 2020 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2021/002160 | 2/20/2021 | WO |
