CN114304141A - Chitosan preservative and using method thereof - Google Patents
Chitosan preservative and using method thereof Download PDFInfo
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- CN114304141A CN114304141A CN202111585687.6A CN202111585687A CN114304141A CN 114304141 A CN114304141 A CN 114304141A CN 202111585687 A CN202111585687 A CN 202111585687A CN 114304141 A CN114304141 A CN 114304141A
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Abstract
The application relates to the field of plant preservation, in particular to a chitosan preservative and a using method thereof; the preservative comprises: water-soluble chitosan, water-soluble emulsified silicone oil, a penetrating agent and the balance of water; the method comprises the following steps: obtaining water-soluble chitosan, water-soluble chitosan and a penetrating agent; mixing water-soluble chitosan, water-soluble chitosan and a penetrating agent according to a first proportion to obtain a first preservative; mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a second proportion to obtain a second preservative; obtaining the water content of the hydrangea; judging whether a first preservative needs to be adopted or not according to the water content of the hydrangea; if so, preparing the first preservative into a spray and spraying to obtain the preserved hydrangea; if not, preparing the second preservative into a spray for spraying to obtain the preserved hydrangea; the water-soluble chitosan, the water-soluble emulsified silicone oil and the penetrating agent are utilized to avoid the problem that the water of the hydrangea is easy to evaporate in large quantity.
Description
Technical Field
The application relates to the field of plant preservation, in particular to a chitosan preservative and a using method thereof.
Background
The flower arrangement, which can be also called flower arrangement art, is to arrange flowers in containers such as bottles, trays, basins and the like instead of planting the flowers in the containers; china flower arrangement is an ancient traditional culture phenomenon, mostly meets the requirements of subjectivity and emotion, and is also a special way for entertainment in daily life. At present, two methods are used for fixing flowers of bouquets: one is to tie with thin iron wire, each flower and each lining leaf are re-shaped after being wound with the thin iron wire wound with green adhesive tape. The other method is to insert the flower into the flower receptacle according to the shape by using a special flower receptacle with flower mud inside, which is simple and convenient.
In the practice of flower arrangement, the collapse and withering of the hydrangea are found to be easy to occur if the hydrangea is used as a raw material for flower arrangement, the reasons are that on one hand, water is evaporated due to the transpiration of plants, on the other hand, petals are dehydrated due to the erosion of flower stems and petals by bacteria, and the decisive factor for determining whether the hydrangea collapses and withers is the evaporation of a large amount of water due to the transpiration.
Therefore, how to avoid the evaporation of a large amount of water from the hydrangea is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The application provides a chitosan preservative and a using method thereof, which aim to solve the technical problem that in the prior art, the water of hydrangea is easy to evaporate in a large amount.
In a first aspect, the application provides a chitosan preservative, which comprises the following components in percentage by mass: water-soluble chitosan: 0.25-0.5 per mill, water-soluble emulsified silicone oil: 0.2-0.3 per mill and penetrant: 0.2 to 0.3 percent of the total weight of the composition, and the balance of water.
Optionally, the silicone oil content of the water-soluble emulsified silicone oil is 60-62%.
Optionally, the osmotic agent includes at least one of a water soluble azone and dimethyl sulfoxide.
Optionally, the solute content of the water-soluble azone is more than or equal to 99%.
In a second aspect, the application provides a method for using a chitosan preservative, the preservative of the first aspect is used for preserving hydrangea, and the using method comprises the following steps:
obtaining water-soluble chitosan, water-soluble chitosan and a penetrating agent;
mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a first ratio to obtain a first preservative;
mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a second proportion to obtain a second preservative;
obtaining the water content of the hydrangea;
judging whether a first preservative needs to be adopted or not according to the water content of the hydrangea;
if so, preparing the first preservative into a spray and spraying to obtain the preserved hydrangea;
if not, the second preservative is prepared into a spray for spraying to obtain the preserved hydrangea.
Optionally, the first ratio comprises 0.25-0.3 per mill of water-soluble chitosan, 0.2-0.25 per mill of water-soluble emulsified silicone oil and 0.2-0.25 per mill of penetrant.
Optionally, the second ratio comprises 0.3-0.5 permillage of water-soluble chitosan, 0.25-0.3 permillage of water-soluble emulsified silicone oil and 0.25-3 permillage of penetrant.
Optionally, the determining whether to adopt a first preservative according to the water content of the hydrangea specifically includes:
obtaining the standard water content of the hydrangea;
judging whether a first preservative needs to be adopted or not according to the water content and the standard water content;
when the water content is larger than or equal to the standard water content, judging that a first preservative is needed, preparing the first preservative into a spray for spraying to obtain the preserved hydrangea;
and when the water content is less than the standard water content, judging that a second preservative needs to be adopted, preparing the second preservative into a spray and spraying to obtain the preserved hydrangea.
Optionally, the standard water content of the hydrangea is 85% -95%.
Optionally, the determining whether to adopt the first preservative according to the water content of the hydrangea, and then, including:
inserting the preserved hydrangea into the first preservative or the second preservative to obtain the hydrangea capable of being preserved for a long time.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the chitosan preservative provided by the embodiment of the application utilizes the antibacterial property of water-soluble chitosan, so that the antibacterial property of hydrangea is enhanced, the strong hygroscopicity of the water-soluble chitosan can inhibit the respiratory metabolism and the moisture loss of the hydrangea, and meanwhile, the water-soluble emulsified silicone oil can form a film layer on the surface or the culture liquid surface of the hydrangea for a long time, so that the evaporation of moisture can be reduced, the surface humidity can be maintained, and the permeability of the water-soluble chitosan is enhanced through a penetrant, so that the preservation effect of the preservative can be further increased, and the problem that the moisture of the hydrangea is easy to evaporate in large quantity is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method provided in an embodiment of the present application;
fig. 2 is a detailed flowchart of a method provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The inventive thinking of the application is that: the water-soluble chitosan has good antibacterial activity and can inhibit the growth and reproduction of fungi, bacteria and viruses, the specific principle is that the interaction of positive charges carried by water-soluble chitosan molecules and negative charges on bacterial cell membranes promotes the penetrability of the bacterial cell membranes to be strong, protease and other components in the bacterial cells are leaked to cause cell death of thalli, so that the antibacterial and bactericidal effects are achieved, and the water-soluble chitosan has strong hygroscopicity and can effectively keep the stability of water, so that the respiratory metabolism and the water loss of hydrangea can be inhibited, and the senescence of the hydrangea structure is slowed down.
In one embodiment of the application, a chitosan preservative is provided, and the chitosan preservative comprises the following components in percentage by mass: water-soluble chitosan: 0.25-0.5 per mill, water-soluble emulsified silicone oil: 0.2-0.3 per mill and penetrant: 0.2 to 0.3 percent of the total weight of the composition, and the balance of water.
In the application, the positive effect that the mass fraction of the water-soluble chitosan is 0.25-0.5 per mill is that within the range, the whole antibacterial performance of the preservative can be ensured, and the respiratory metabolism and the water loss of the hydrangea can be effectively inhibited; when the value of the mass fraction is larger than the maximum value of the end point of the range, the adverse effect is that the overhigh water-soluble chitosan excessively inhibits the normal respiratory metabolism of the hydrangea, the petal cells of the hydrangea are damaged and even die, and black spots appear on the petals of the hydrangea.
The active effect that the mass fraction of the water-soluble emulsified silicone oil is 0.2-0.3 per mill is that in the range, the preservative can effectively form a film layer on the surfaces of the hydrangea petals, and the slow water evaporation process of the hydrangea is fully ensured, so that the surface humidity of the hydrangea is maintained; when the value of the mass fraction is greater than the maximum value of the end point of the range, the adverse effect is that the content of the water-soluble emulsified silicone oil is too much, the air holes of the hydrangea are safely blocked, so that the normal respiratory metabolism is inhibited, the surface humidity of the hydrangea is influenced, even the hydrangea is necrosed, and when the value of the mass fraction is less than the minimum value of the end point of the range, the adverse effect is that the content of the water-soluble emulsified silicone oil is insufficient, an effective film layer cannot be formed on the surfaces of the petals of the hydrangea, and the surface humidity of the hydrangea cannot be maintained.
The active effect of the penetrant with the mass fraction of 0.2-0.3% is that within the range, the penetrant can effectively promote the dispersion capacity and permeability of the water-soluble chitosan, thereby promoting the water-soluble chitosan to enter into petal cells of hydrangea and ensuring the performance of the chitosan; when the value of the mass fraction is larger than the maximum value of the end point of the range, the adverse effect is that the content of the penetrating agent is too high, the permeability of the water-soluble chitosan is too strong, the respiration effect of the hydrangea is influenced, and partial cells of the hydrangea die to form black spots, and when the value of the mass fraction is smaller than the minimum value of the end point of the range, the adverse effect is that the content of the penetrating agent is insufficient, so that the water-soluble chitosan cannot effectively penetrate into the surface of the hydrangea, the water-soluble chitosan cannot effectively inhibit the normal respiratory metabolism of the hydrangea, and the whole fresh-keeping effect of the fresh-keeping agent is not ideal.
In some alternative embodiments, the water-soluble silicone emulsion has a silicone oil content of 60% to 62%.
In the application, the positive effect that the silicone oil content of the water-soluble emulsified silicone oil is 60-62% is that in the content range, because the silicone oil has good fluidity, sufficient flowing force can be provided, so that the water-soluble emulsified silicone oil can be ensured to be capable of fully forming a film layer on the surfaces of the petals of the hydrangea; when the value of the content is greater than the maximum value of the end point of the range, the adverse effect is that excessive silicone oil causes the fluidity of the water-soluble emulsified silicone oil to be too large, so that the film layer cannot be stabilized on the petal surface of the hydrangea and further the surface humidity of the hydrangea cannot be maintained, and when the value of the content is less than the minimum value of the end point of the range, the adverse effect is that the silicone oil content is insufficient, so that the film layer cannot be formed and the surface humidity of the hydrangea cannot be maintained.
In some alternative embodiments, the osmotic agent includes at least one of a water soluble azone and dimethylsulfoxide.
In some alternative embodiments, the water-soluble azone has a solute content of 99% or more.
In the application, the positive effect that the solute content of the water-soluble azone is more than or equal to 99 percent is that the purity of the water-soluble azone can be ensured within the content range, so that the penetrating agent can play a role in promoting the penetrating performance of the water-soluble chitosan; when the amount is less than the end-point minimum of the range, an adverse effect will be caused in that too low a purity will result in a reduction in the permeability of the osmotic agent, thereby affecting the permeation of the water-soluble chitosan.
In an embodiment of the present application, as shown in fig. 1, a method for using a chitosan preservative to preserve hydrangea is provided, where the method includes:
s1, obtaining water-soluble chitosan, water-soluble chitosan and a penetrating agent;
s2, mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a first ratio to obtain a first preservative;
s3, mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a second proportion to obtain a second preservative;
s4, obtaining the water content of the hydrangea;
s5, judging whether a first preservative needs to be adopted or not according to the water content of the hydrangea;
if so, preparing the first preservative into a spray and spraying to obtain the preserved hydrangea;
if not, the second preservative is prepared into a spray for spraying to obtain the preserved hydrangea.
In some alternative embodiments, the first ratio comprises 0.25 to 0.3 parts per thousand of water-soluble chitosan, 0.2 to 0.25 parts per thousand of water-soluble silicone emulsion, and 0.2 to 0.25% of osmotic agent.
In this application, the positive effect of adopting first ratio is under the condition of this ratio, because the ratio proportion of three is comparatively unanimous, consequently can the intermix abundant to guarantee that respective function goes on smoothly, thereby can guarantee the fresh-keeping effect to the hydrangea of high water content of antistaling agent, thereby can guarantee the fresh-keeping of the tender hydrangea of petal in the outward appearance.
In some alternative embodiments, the second ratio comprises 0.3 to 0.5 parts per thousand of water-soluble chitosan, 0.25 to 0.3 parts per thousand, 0.25 to 3 parts per thousand of water-soluble silicone emulsion, and 0.25 to 3% of osmotic agent.
In this application, the positive effect of adopting the second ratio is that under the condition of this ratio, because the ratio proportion of three is comparatively unanimous, consequently can the intermix abundant to guarantee that respective function goes on smoothly, thereby can guarantee the fresh-keeping effect to the hydrangea of low water content of antistaling agent, thereby can guarantee the fresh-keeping of the older petal hydrangea in appearance.
In some optional embodiments, the determining whether to use the first preservative according to the water content of the hydrangea specifically includes:
s51, obtaining the standard water content of the hydrangea;
s52, judging whether a first preservative needs to be adopted or not according to the water content and the standard water content;
when the water content is larger than or equal to the standard water content, judging that a first preservative is needed, preparing the first preservative into a spray for spraying to obtain the preserved hydrangea;
and when the water content is less than the standard water content, judging that a second preservative needs to be adopted, preparing the second preservative into a spray and spraying to obtain the preserved hydrangea.
In some alternative embodiments, the standard moisture content of the hydrangea is 85% to 95%.
In the application, the positive effect of limiting the standard water content to be 85-95% is that in the range of the water content, the water content in the hydrangea petals can be ensured to fully reflect the old and tender degree of the petals; when the value of the water content is larger than the maximum value of the end point of the range, the standard content with over high adverse effect causes inaccurate distinguishing of the old and tender degrees of the hydrangea, and when the value of the water content is smaller than the minimum value of the end point of the range, the adverse effect causes that the standard content with over low adverse effect causes the old hydrangea not to be fresh-keeping in time.
In some optional embodiments, the determining whether the first preservative is required to be used according to the water content of the hydrangea comprises:
s6, inserting the preserved hydrangea into the first preservative or the second preservative to obtain the hydrangea capable of being preserved for a long time.
Example 1
The chitosan preservative comprises the following components in percentage by mass: water-soluble chitosan: 0.25 per mill, water-soluble emulsified silicone oil: 0.2 per mill and penetrant: 0.25 and the balance of water.
The silicone oil content of the water-soluble emulsified silicone oil is 60-62%.
The solute content of the water-soluble azone is more than or equal to 99 percent.
The osmotic agent includes a water soluble azone.
In an embodiment of the present application, as shown in fig. 1, a method for using a chitosan preservative to preserve hydrangea is provided, where the method includes:
s1, obtaining water-soluble chitosan, water-soluble chitosan and a penetrating agent;
s2, mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a first ratio to obtain a first preservative;
s3, mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a second proportion to obtain a second preservative;
s4, obtaining hydrangea with water content of 96%;
s51, obtaining the standard water content of the hydrangea;
s52, judging whether a first preservative needs to be adopted or not according to the water content and the standard water content;
the water content is larger than or equal to the standard water content, a first preservative is adopted, and the first preservative is prepared into a spray to be sprayed, so that the preserved hydrangea is obtained;
s6, inserting the preserved hydrangea into the first preservative to obtain the hydrangea capable of being preserved for a long time.
The first proportion comprises 0.25 thousandth of water-soluble chitosan, 0.25 thousandth of water-soluble emulsified silicone oil and 0.25 thousandth of penetrating agent.
The standard water content of the hydrangea is 90%.
Example 2
Comparing example 2 with example 1, example 2 differs from example 1 in that:
the preservative comprises the following components in percentage by mass: water-soluble chitosan: 0.3 thousandth, water-soluble emulsified silicone oil: 0.2 per mill and penetrant: 0.2 percent and the balance of water.
The first proportion comprises 0.3 per mill of water-soluble chitosan, 0.2 per mill of water-soluble emulsified silicone oil and 0.2 per mill of penetrating agent
Example 3
Comparing example 3 with example 1, example 3 differs from example 1 in that:
the preservative comprises the following components in percentage by mass: water-soluble chitosan: 0.5 thousandth, water-soluble emulsified silicone oil: 0.25 per mill and penetrant: 0.25 percent and the balance of water.
S4, obtaining the hydrangea with the water content of 80 percent;
therefore, the second preservative needs to be adopted.
The silicone oil content of the water-soluble emulsified silicone oil is 60%.
The penetrating agent is water-soluble azone.
The second proportion comprises 0.5 thousandth of water-soluble chitosan, 0.25 thousandth of water-soluble emulsified silicone oil and 0.25 thousandth of penetrating agent.
The standard water content of the hydrangea is 85%.
Example 4
The preservative comprises the following components in percentage by mass: water-soluble chitosan: 0.3 thousandth, water-soluble emulsified silicone oil: 0.3 per mill and penetrant: 0.3 percent and the balance of water.
The second proportion comprises 0.3 thousandth of water-soluble chitosan, 0.3 thousandth of water-soluble emulsified silicone oil and 0.3 thousandth of penetrating agent.
Example 5
Comparing example 3 with example 1, example 3 differs from example 1 in that:
the silicone oil content of the water-soluble emulsified silicone oil is 62%.
The penetrating agent is dimethyl sulfoxide.
The standard water content of the hydrangea is 95%.
Comparative example 1
Comparative example 1 and example 1 were compared, and comparative example 1 and example 1 were distinguished in that:
water-soluble chitosan is not used.
Comparative example 2
Comparative example 2 is compared with example 1, and comparative example 2 differs from example 1 in that:
water-soluble emulsified silicone oil is not used.
Comparative example 3
Comparative example 3 is compared with example 1, and comparative example 3 differs from example 1 in that:
no penetrant is used.
Comparative example 4
Comparative example 4 is compared with example 1, and comparative example 4 differs from example 1 in that:
the first conventional formula of the preservative is adopted: the first conventional formulation comprises, in mass fraction: cetyl alcohol: 0.5-2%, salicylic acid: 1.25 per mill, water-soluble azone: 0.25 percent of the total weight of the composition, and the balance of water, wherein the mass fraction of the cetyl alcohol is 0.5 per thousand, 0.75 per thousand, 1 per thousand, 1.25 per thousand or 2 per thousand.
Comparative example 5
Comparative example 5 and comparative example 4 were compared, and comparative example 5 and comparative example 4 were distinguished in that:
cetyl alcohol was replaced with stearyl alcohol.
Comparative example 6
Comparative example 6 was compared with comparative example 4, and comparative example 6 differs from comparative example 4 in that:
the second conventional formula of the preservative is adopted: the second conventional formulation comprises, in mass fractions: methyl cellulose: 0.35-5%, water-soluble emulsified silicone oil: 0.25 per mill, water-soluble azone: 0.25 percent of the total weight of the cellulose acetate, and the balance of water, wherein the mass fraction of the methyl cellulose is 0.35 per thousand, 0.2 per thousand, 0.25 per thousand or 5 per thousand.
Comparative example 7
Comparative example 7 and comparative example 6 were compared, and comparative example 7 and comparative example 6 were distinguished in that:
methyl cellulose was replaced with hydroxyethyl cellulose.
Related experiments:
hydrangeas treated in examples 1 to 3 and comparative examples 1 to 7 were collected, respectively, and the respective life extension times were counted, and the results are shown in Table 1.
Test methods of the related experiments:
life extension time of hydrangea: under the condition of room temperature of 10-20 ℃, the length of the flower stem of hydrangea is controlled to be about 35cm, different groups of varieties including small green hydrangea, pink hydrangea, white hydrangea, light blue hydrangea, blue hydrangea and green hydrangea are respectively adopted, the time of flower arrangement completion is taken as a timing starting point, the black spots or withering of petals is taken as an end point, all the used preservatives are only sprayed on the petals of the hydrangea, the preservatives in the examples 1-4 and the comparative examples 1-7 are tested, meanwhile, blank groups only sprayed with water are designed, and the time of prolonging the service life of each group compared with the blank groups is counted.
TABLE 1
Specific analysis of table 1:
the life prolonging time refers to the time for prolonging the life of the hydrangea which is treated by the preservative and is not treated, and the longer the life prolonging time is, the stronger the preservation capability of the preservative on the hydrangea is.
From the data of examples 1-4, it can be seen that:
if the first preservative is adopted, the preservation performance of different varieties is different, but the hydrangea can be effectively preserved.
If the second preservative is adopted, the preservation performance of different varieties is different, but the hydrangea can also be effectively protected, and the daily inspection of the preservation of the hydrangea shows that the first preservative can preserve the tender hydrangea, and the second preservative needs to be adopted for preserving the old hydrangea and imported hydrangea because the moisture is lost to a certain extent.
From the data of comparative examples 1 to 7, it can be seen that:
if the traditional preservative is adopted, the preservation period can be prolonged only by about 1 day, and meanwhile, the traditional preservative has relatively average preservation effect on various hydrangea varieties.
Meanwhile, in order to better verify the defects of the traditional preservative, on the basis of the first conventional formula provided in the comparative example 4, 0.5 per thousand or 0.75 per thousand of 6-benzylaminopurine, 2 per thousand or 4 per thousand of gibberellin, 2 per thousand or 3.5 per thousand of chlormequat chloride and 1.25 per thousand or 2 per thousand of salicylic acid are respectively added, but the service life of the hydrangea is not prolonged by more than 2 days;
meanwhile, on the basis of the second conventional formula provided in the comparative example 6, 0.5 per thousand, 1 per thousand or 1.5 per thousand of sodium hexametaphosphate is respectively added in mass percent, but the service life of the hydrangea is not prolonged by more than 2 days.
One or more technical solutions in the embodiments of the present application at least have the following technical effects or advantages:
(1) the chitosan preservative provided by the embodiment of the application utilizes the antibacterial property of water-soluble chitosan, so that the antibacterial property of hydrangea is enhanced, the strong hygroscopicity of the water-soluble chitosan can inhibit the respiratory metabolism and the moisture loss of the hydrangea, and meanwhile, the water-soluble emulsified silicone oil can form a film layer on the surface or the culture liquid surface of the hydrangea for a long time, so that the evaporation of moisture can be reduced, the surface humidity can be maintained, and the permeability of the water-soluble chitosan is enhanced through a penetrant, so that the preservation effect of the preservative can be further increased, and the problem that the moisture of the hydrangea is easy to evaporate in large quantity is avoided.
(2) The chitosan preservative provided by the embodiment of the application is different from the traditional multi-component mixture ratio, is simple in mixture ratio, and has better preservation capability compared with other formulas.
(3) The chitosan preservative provided by the embodiment of the application has an integral water-soluble formula, can be quickly dissolved in a solution, and has an obvious preservation effect on various hydrangea.
(4) The chitosan preservative provided by the embodiment of the application has specificity on the preservation of hydrangea, and the preservation effect of the chitosan preservative is greatly reduced when the chitosan preservative is used for common flower seeds such as lily or rose.
(5) According to the method provided by the embodiment of the application, the water content of the hydrangea is measured, and the chitosan preservative with different proportions is correspondingly applied, so that the freshness of the hydrangea can be accurately and effectively ensured.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The chitosan preservative is characterized by comprising the following components in percentage by mass: water-soluble chitosan: 0.25-0.5 per mill, water-soluble emulsified silicone oil: 0.2-0.3 per mill and penetrant: 0.2 to 0.3 percent of the total weight of the composition, and the balance of water.
2. The preservative according to claim 1, wherein the water-soluble emulsified silicone oil has a silicone oil content of 60% to 62%.
3. The preservative of claim 1, wherein the penetrant comprises at least one of a water soluble azone and dimethyl sulfoxide.
4. The preservative according to claim 3, wherein the solute content of the water-soluble azone is not less than 99%.
5. A use method of a chitosan preservative, which is characterized in that the preservative according to any one of claims 1 to 4 is used for preserving hydrangea, and the use method comprises the following steps:
obtaining water-soluble chitosan, water-soluble chitosan and a penetrating agent;
mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a first ratio to obtain a first preservative;
mixing the water-soluble chitosan, the water-soluble chitosan and the penetrating agent according to a second proportion to obtain a second preservative;
obtaining the water content of the hydrangea;
judging whether a first preservative needs to be adopted or not according to the water content of the hydrangea;
if so, preparing the first preservative into a spray and spraying to obtain the preserved hydrangea;
if not, the second preservative is prepared into a spray for spraying to obtain the preserved hydrangea.
6. The use method of claim 5, wherein the first ratio comprises 0.25-0.3 ‰ 0.2-0.25 ‰ 0.25% of water-soluble chitosan, water-soluble silicone emulsion, and penetrant.
7. The use method according to claim 5, wherein the second ratio comprises 0.3-0.5 ‰ 0.25-0.3 ‰ 0.25-3% 0.3% o water-soluble chitosan, water-soluble silicone emulsion, and penetrant.
8. The use method according to claim 5, wherein the judging whether the first preservative needs to be adopted according to the water content of the hydrangea comprises the following specific steps:
obtaining the standard water content of the hydrangea;
judging whether a first preservative needs to be adopted or not according to the water content and the standard water content;
when the water content is larger than or equal to the standard water content, judging that a first preservative is needed, preparing the first preservative into a spray for spraying to obtain the preserved hydrangea;
and when the water content is less than the standard water content, judging that a second preservative needs to be adopted, preparing the second preservative into a spray and spraying to obtain the preserved hydrangea.
9. The use according to claim 8, characterized in that the standard moisture content of the hydrangea is comprised between 85% and 95%.
10. The use method according to claim 5, wherein the judging whether the first preservative is required according to the water content of the hydrangea comprises the following steps:
inserting the preserved hydrangea into the first preservative or the second preservative to obtain the hydrangea capable of being preserved for a long time.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102687716A (en) * | 2011-11-25 | 2012-09-26 | 河南科技大学 | Tree peony fresh cutting flower anti-staling agent and preservative solution |
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| CN109757554A (en) * | 2019-01-23 | 2019-05-17 | 中国科学院华南植物园 | A kind of fresh-keeping of dong jujube agent and its preparation method and application |
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