CN111657273B - Nano-silver bactericidal composition for fresh flowers - Google Patents
Nano-silver bactericidal composition for fresh flowers Download PDFInfo
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- CN111657273B CN111657273B CN202010568090.XA CN202010568090A CN111657273B CN 111657273 B CN111657273 B CN 111657273B CN 202010568090 A CN202010568090 A CN 202010568090A CN 111657273 B CN111657273 B CN 111657273B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N3/00—Preservation of plants or parts thereof, e.g. inhibiting evaporation, improvement of the appearance of leaves or protection against physical influences such as UV radiation using chemical compositions; Grafting wax
- A01N3/02—Keeping cut flowers fresh chemically
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention relates to the technical field of flower maintenance auxiliary agents, and discloses a nano-silver bactericidal composition for flowers, which comprises 30-50 parts of agar, 3-7 parts of nano-silver, 15-30 parts of a film-forming agent and 40-60 parts of water in parts by weight. After the composition is coated on the stem of the fresh flower, the water loss can be prevented, meanwhile, bacteria at the incision can be resisted for a long time, the bacteria at the incision are prevented from breeding, and finally, the withering of the fresh flower is delayed, so that the fresh flower blossoms and keeps the fresh state to be prolonged, and the economic loss is avoided.
Description
Technical Field
The invention relates to the technical field of flower maintenance auxiliary agents, in particular to a nano-silver sterilizing composition for flowers.
Background
Fresh flowers are mainly used for beautifying the environment and interpersonal communication, and also serve as a food source. The flower is composed of corolla, calyx, receptacle and stamen, and has various colors, and some flowers grow gorgeous and have fragrance. The fresh flowers can bring joyful mood to people, and meanwhile, the spirit world of people can be enriched.
In order to keep flowers in a full bloom state for as long as possible, it is generally necessary to maintain the flowers. There are three main methods for flower maintenance: the fresh-keeping method comprises the steps of first shearing, second picking and third preserving, and the appreciation time of the fresh flowers can be greatly prolonged by the three methods. Flowers are transported to a purchase shop by a dealer of a fresh flower shop by cutting a stem portion of the flower from a production place of the flower, and in order to prolong a storage time of the flower, a part of the flower is usually inserted into a flower vase containing water, thereby preventing premature withering of the flower due to water loss. However, a part of flowers cannot be inserted into the flower vase due to the influence of space factors, and only a layer of preservative film is coated at the cut of the stem, so that the water loss from the cut of the stem of the flowers is prevented.
The quantity and the variety of flowers in the flower shop are more, the flowers and the leaves of the flowers need an environment with certain humidity, and the temperature of the surrounding living is not too low, so that the fresh-keeping time of the flowers is prolonged. But is suitable for the environment with the temperature and the humidity of the fresh peanuts, and is also beneficial to the breeding of bacteria. Although the cut of the stem of the flower is coated with the preservative film, bacteria are still bred at the cut, so that the cut of the stem of the flower is infected by the bacteria, the withering of the flower is caused, and the economic loss of a flower dealer is finally caused.
Disclosure of Invention
One of the purposes of the invention is to provide a nano-silver sterilizing composition for fresh flowers, which can prevent water loss, resist bacteria at the cut for a long time, prevent the bacteria at the cut from breeding and finally delay withering of the fresh flowers after the composition is coated on the stems of the fresh flowers, so that the fresh flowers are prolonged in a fresh and alive state, and economic loss is avoided.
The technical purpose of the invention is realized by the following technical scheme:
the nano silver sterilizing composition for fresh flower consists of agar 30-50 weight portions, nano silver 3-7 weight portions, filming agent 15-30 weight portions and water 40-60 weight portions.
By adopting the technical scheme, the nano silver is attached to the agar, so that the nano silver can be conveniently fixed at the cut of the stem of the fresh flower. The agar has the colloidal texture and no odor, and cannot influence the air environment in the shop. The temperature difference between the condensation point and the melting point of the agar is large, the agar begins to melt at 95 ℃ usually, so that the agar attached with the nano silver can not melt at high temperature. The nano silver has strong inhibiting and killing effects on ten pathogenic microorganisms, and cannot generate drug resistance. By adding the film forming agent, a film can be formed on the surface of an incision after the composition is coated on the incision of the fresh flower stem, so that the fresh flower stem can be prevented from withering due to water loss, and meanwhile, the invasion of external impurities and bacteria can be prevented. After the composition is coated on the stem of the fresh flower, the water loss can be prevented, meanwhile, bacteria at the incision can be resisted for a long time, the bacteria at the incision are prevented from breeding, and finally, the withering of the fresh flower is delayed, so that the fresh flower blossoms and keeps the fresh state to be prolonged, and the economic loss is avoided.
As a further improvement of the invention, the raw materials also comprise 13 to 27 parts by weight of aloe extract.
By adopting the technical scheme, the aloe extract has the effects of sterilizing, inhibiting bacteria, diminishing inflammation, detoxifying, promoting wound healing and the like. By adding the aloe extract into the composition, on one hand, the aloe extract belongs to natural plant extracts, is green and healthy, has lower damage to cuts of fresh flowers, and on the other hand, the aloe extract has rich sources and low price, and is suitable for large-scale use.
As a further improvement of the invention, the raw materials also comprise 2 to 4 parts of aminoethanol sulfate and 1 to 3 parts of alanine glutamate by weight.
By adopting the technical scheme, the aminoethanol sulfate and the alanine glutamate are added into the composition and interact with each other, so that the transpiration rate of the flower in vitro is reduced, the evaporation amount of water in the flower is reduced, and the fresh-keeping capacity of the flower is prolonged.
As a further improvement of the invention, the raw materials also comprise 0.3 to 0.9 portion of ammonium chloride and 1.2 to 17 portions of ammonium phosphate by weight.
Through adopting above-mentioned technical scheme, ammonium chloride and alanine glutamate combined action can increase the agar that is attached with nanometer silver and the adhesive force of flower stem incision department to can improve the active time of nanometer silver and fresh flower stem department, can also prevent simultaneously that external bacterium from having the invasion and attack of harmful substance to flower incision department. The combined action of the ammonium chloride, the ammonium phosphate and the amino ethanol sulfate can inhibit and kill fungi, thereby enhancing the resistance of the stems of the flowers to the fungi and prolonging the fresh-keeping time of the flowers.
As a further refinement of the present invention, the film former comprises titanium dioxide.
Through adopting above-mentioned technical scheme, titanium dioxide coats in the agar outside, and the titanium dioxide forms the film after the drying to can completely cut off flower stem incision and external, prevent that external bacterium and harmful substance from to the invasion and attack of flower stem incision.
As a further improvement of the invention, the film forming agent further comprises aqueous polyurethane resin, and the mass ratio of the aqueous polyurethane resin to the titanium dioxide is 1: 6.
By adopting the technical scheme, the waterborne polyurethane resin is an excellent film-forming auxiliary agent on one hand, can promote titanium dioxide to form a film on agar, and meanwhile, the titanium dioxide and the agar are combined to generate a strong catalytic degradation function under the action of light, so that toxic and harmful gas in the air is effectively degraded, various bacteria are effectively killed, the resistance of flower cuts to external bacteria invasion is improved, and the fresh-keeping time of flowers is prolonged.
As a further improvement of the invention, the raw materials also comprise 2 to 7 parts by weight of behenamide.
Through adopting above-mentioned technical scheme, behenamide and waterborne polyurethane resin combined action can make the film that titanium dioxide formed have the heat preservation effect for the moisture that overflows in flower stem incision department obtains keeping warm, thereby makes the heat energy that illumination produced daytime adjust the temperature at night, makes the difference in temperature between night of stem incision department reduce, has the cushioning effect to the temperature rise and fall of incision department.
As a further improvement of the invention, the raw materials also comprise 1-5 parts by weight of indolebutyric acid.
By adopting the technical scheme, the indolebutyric acid belongs to endogenous auxin, can promote cell division and cell growth, promotes cell proliferation at the cut of the stem of the fresh flower while the nano-silver kills bacteria, and reduces the damage of the nano-silver to the cut of the stem of the fresh flower while killing the bacteria.
The invention also aims to provide a preparation process of the nano-silver sterilizing composition using fresh flowers, which can obtain the nano-silver sterilizing composition with stable and uniform properties and excellent sterilizing and bacteriostasis effects.
A preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps:
s1: heating water to 80-95 deg.C, adding agar and nano silver, and stirring for 10-15 min;
s2: adding Aloe extract, aminoethanol sulfate, alanine glutamate into the liquid system treated with S1, and stirring for 5-8 min; then reducing the temperature of the liquid system to 50-60 ℃, and stirring for 2-6 min;
s3: adding ammonium chloride and ammonium phosphate into the liquid system treated by the S2 according to the parts by weight, continuously stirring for 5-10min, then heating the liquid system to 75-85 ℃, then simultaneously adding titanium dioxide, aqueous polyurethane resin and behenamide according to the parts by weight, continuously stirring for 10-15min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Through adopting above-mentioned technical scheme, at first, put into hot water with agar to can make things convenient for agar to dissolve in aqueous, then continuously stir after adding nano silver, thereby can make the even dispersion of nano silver in agar, thereby can make nano silver can exert better bactericidal effect. And finally, after the liquid system is heated to 75-85 ℃, titanium dioxide, the aqueous polyurethane resin and the behenamide are added, so that the film is easily formed, the titanium dioxide, the aqueous polyurethane resin and the behenamide can be conveniently dissolved in the liquid system, the temperature is finally reduced to room temperature, the transportation is convenient, and the titanium dioxide, the aqueous polyurethane resin and the behenamide are uniform and stable in properties.
In conclusion, the invention has the advantages and beneficial effects that:
1. after the composition is coated on the stem of the fresh flower, the water loss can be prevented, meanwhile, bacteria at the cut can be resisted for a long time, the bacteria at the cut are prevented from breeding, and finally, the withering of the fresh flower is delayed, so that the blooming of the fresh flower is prolonged, and the economic loss is avoided;
2. by adding the aloe extract into the composition, on one hand, the aloe extract belongs to a natural plant extract, is green and healthy, has lower damage to cuts of fresh flowers, and on the other hand, the aloe extract has rich sources and low price, and is suitable for large-scale use;
3. by adding the aminoethanol sulfate and the alanine glutamate into the composition and enabling the aminoethanol sulfate and the alanine glutamate to interact with each other, the transpiration rate of the flower after being separated is reduced, the water evaporation amount in the flower is reduced, and the fresh-keeping capacity of the flower is prolonged;
4. the combined action of the ammonium chloride and the alanine glutamate can increase the adhesive force between the agar attached with the nano silver and the cut of the stem of the fresh flower, thereby improving the action time between the nano silver and the stem of the fresh flower and simultaneously preventing the invasion of harmful substances to the cut of the fresh flower by external bacteria. The combined action of the ammonium chloride, the ammonium phosphate and the amino ethanol sulfate can inhibit and kill fungi, thereby enhancing the resistance of the fresh flower stems to viruses and fungi and prolonging the fresh-keeping time of the fresh flowers;
5. the water-based polyurethane resin is an excellent film-forming auxiliary agent, can promote titanium dioxide to form a film on agar, and simultaneously, the titanium dioxide and the agar are combined to generate a strong catalytic degradation function under the action of light, so that toxic and harmful gases in the air are effectively degraded, various bacteria are effectively killed, the resistance of flower cuts to the invasion of external bacteria is improved, and the fresh-keeping time of flowers is prolonged;
6. the behenamide and the waterborne polyurethane resin act together, so that a film formed by titanium dioxide has a heat preservation effect, water overflowing from a cut of a stem of a fresh flower is preserved, the temperature at night is adjusted by heat energy generated by illumination in the daytime, the temperature difference between day and night of the cut of the stem is reduced, and the temperature rise and fall of the cut are buffered.
7. Put into hot water with agar to can make things convenient for agar to dissolve in aqueous, then keep stirring after adding nano-silver, thereby can make the even dispersion of nano-silver in agar, thereby can make nano-silver can exert better bactericidal effect.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1:
a preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps: all materials are in parts by weight;
s1: 50 parts of deionized water is added into a reaction pot, the deionized water is heated to 90 ℃, then 40 parts of commercially available agar and 5 parts of nano silver are added into the reaction pot, and the stirring is continued for 13 min.
S2: then 20 parts of aloe extract, 3 parts of aminoethanol sulfate and 2 parts of alanine glutamate are added into the reaction pot treated by S1 at the same time, and stirring is continued for 6 min. Then the temperature of the liquid system in the reaction kettle is reduced to 55 ℃, and the stirring is continued for 4 min.
S3: then adding 0.6 part of ammonium chloride, 1.5 parts of ammonium phosphate and 3 parts of indolebutyric acid into the reaction pot treated by the S2, continuously stirring for 13min, then heating the liquid system in the reaction pot to 80 ℃, and then simultaneously adding 22 parts of film forming agent and 4 parts of behenamide into the reaction pot, wherein the film forming agent comprises titanium dioxide and waterborne polyurethane resin, and the mass ratio of the two is 6: 1. Continuously stirring for 13min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Example 2:
a preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps: all materials are in parts by weight;
s1: 50 parts of deionized water is added into a reaction pot, the deionized water is heated to 90 ℃, then 40 parts of commercially available agar and 5 parts of nano silver are added into the reaction pot, and the stirring is continued for 13 min.
S2: then the liquid system in the reaction pot is cooled to 80 ℃, and then 22 parts of film forming agent is added into the reaction pot, wherein the film forming agent is titanium dioxide. Continuously stirring for 13min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Example 3:
a preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps: all materials are in parts by weight;
s1: 50 parts of deionized water is added into a reaction pot, the deionized water is heated to 90 ℃, then 40 parts of commercially available agar and 5 parts of nano silver are added into the reaction pot, and the stirring is continued for 13 min.
S2: then 20 parts of aloe extract were continuously stirred for 6 min. Then the temperature of the liquid system in the reaction kettle is reduced to 55 ℃, and the stirring is continued for 4 min.
S3: then the liquid system in the reaction pot is heated to 80 ℃, and then 22 parts of film forming agent is added into the reaction pot, wherein the film forming agent is titanium dioxide. Continuously stirring for 13min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Example 4:
a preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps: all materials are in parts by weight;
s1: 50 parts of deionized water is added into a reaction pot, the deionized water is heated to 90 ℃, then 40 parts of commercially available agar and 5 parts of nano silver are added into the reaction pot, and the stirring is continued for 13 min.
S2: then, 3 parts of aminoethanol sulfate and 2 parts of alanine glutamate were simultaneously added into the reaction vessel treated with S1, and stirring was continued for 6 min. Then the temperature of the liquid system in the reaction kettle is reduced to 55 ℃, and the stirring is continued for 4 min.
S3: then the liquid system in the reaction pot is heated to 80 ℃, and then 22 parts of film forming agent is added into the reaction pot, wherein the film forming agent is titanium dioxide. Continuously stirring for 13min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Example 5:
a preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps: all materials are in parts by weight;
s1: 50 parts of deionized water is added into a reaction pot, the deionized water is heated to 90 ℃, then 40 parts of commercially available agar and 5 parts of nano silver are added into the reaction pot, and the stirring is continued for 13 min.
S2: then, 3 parts of aminoethanol sulfate and 2 parts of alanine glutamate were added simultaneously into the reaction vessel treated with S1, and stirring was continued for 6 min. Then the temperature of the liquid system in the reaction kettle is reduced to 55 ℃, and the stirring is continued for 4 min.
S3: then 0.6 part of ammonium chloride and 1.5 parts of ammonium phosphate are added into the reaction pot processed by S2, the mixture is continuously stirred for 13min, then the liquid system in the reaction pot is heated to 80 ℃, and then 22 parts of film forming agent is added into the reaction pot, wherein the film forming agent is titanium dioxide. Continuously stirring for 13min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Example 6:
a preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps: all materials are in parts by weight;
s1: 50 parts of deionized water is added into a reaction pot, the deionized water is heated to 90 ℃, then 40 parts of commercially available agar and 5 parts of nano silver are added into the reaction pot, and the stirring is continued for 13 min.
S2: and then cooling the liquid system in the reaction kettle to 80 ℃, and then adding 22 parts of film forming agent into the reaction kettle, wherein the film forming agent comprises titanium dioxide and waterborne polyurethane resin, and the mass ratio of the titanium dioxide to the waterborne polyurethane resin is 6: 1. Continuously stirring for 13min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Example 7:
a preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps: all materials are in parts by weight;
s1: 50 parts of deionized water is added into a reaction pot, the deionized water is heated to 90 ℃, then 40 parts of commercially available agar and 5 parts of nano silver are added into the reaction pot, and the stirring is continued for 13 min.
S2: and then cooling the liquid system in the reaction kettle to 80 ℃, and then simultaneously adding 22 parts of film forming agent and 4 parts of behenamide into the reaction kettle, wherein the film forming agent comprises titanium dioxide and waterborne polyurethane resin, and the mass ratio of the titanium dioxide to the waterborne polyurethane resin is 6: 1. Continuously stirring for 13min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Example 8:
a preparation process of a nano-silver sterilizing composition for fresh flowers comprises the following steps: all materials are in parts by weight;
s1: 50 parts of deionized water is added into a reaction pot, the deionized water is heated to 90 ℃, then 40 parts of commercially available agar and 5 parts of nano silver are added into the reaction pot, and the stirring is continued for 13 min.
S2: then adding 3 parts of indolebutyric acid into the reaction kettle treated by the S2, continuously stirring for 13min, then cooling the liquid system in the reaction kettle to 80 ℃, and then adding 22 parts of film forming agent into the reaction kettle, wherein the film forming agent is an acrylic resin film forming agent. Continuously stirring for 13min, keeping the temperature for 20min, and cooling to room temperature to obtain the nano-silver bactericidal composition.
Examples 9-12 differ from example 1 in that the materials used in S1-S3 are shown in Table 1 in parts by weight: unit: portions are
TABLE 1
Examples 13-16 differ from example 2 in that the materials used in S1-S2 are shown in Table 2 in parts by weight: unit: portions are
TABLE 2
| Example 13 | Example 14 | Example 15 | Example 16 | |
| Deionized water | 40 | 60 | 45 | 55 |
| Agar-agar | 30 | 50 | 35 | 45 |
| Nano silver | 3 | 7 | 4 | 6 |
| Film forming agent | 15 | 30 | 19 | 26 |
Example 17: the difference from the embodiment 2 is that the film forming agent is an acrylic resin film forming agent.
Comparative example 1: the difference from example 5 is that the starting material is free of aminoethanol sulfate and alanine glutamate.
Comparative example 2: the difference from example 6 is that the film-forming agent in the raw material is an aqueous urethane resin.
Comparative example 3: the difference from the embodiment 7 is that the film forming agent in the raw materials is an acrylic resin film forming agent.
Comparative example 4: the difference from example 7 is that the film-forming agent in the raw material is an aqueous urethane resin.
The first test: determination of antibacterial and bactericidal properties
The antibacterial effects of the bactericidal compositions prepared in examples 1 to 17 and comparative examples 1 to 4 were measured, and the results are recorded in table 3.
1. Preparing an escherichia coli culture dish; the colony concentration was 4.2X 10 5 CFU/mL
2. Preparing a staphylococcus aureus culture dish; the colony concentration was 3.8X 10 5 CFU/mL
And (2) test II: fresh-keeping ability of flowers
21 roses of the same batch were taken, the stems of the roses were cut, 10g of the bactericidal composition prepared in examples 1 to 17 and comparative examples 1 to 4 was coated on the stem cuts of the 21 roses, respectively, and then placed in an environment of 30 ℃, the time at which each rose withered due to water loss was observed, and the time at which the roses remained fresh was recorded in table 3.
TABLE 3
| Examples | Colony count/CFU/mL after 24h of E.coli contact | Fresh-keeping time/d |
| Example 1 | 12 | 10 |
| Example 2 | 5.3×10 | 6 |
| Example 3 | 3.8×10 | 5 |
| Example 4 | 6.3×10 | 6 |
| Example 5 | 4.3×10 | 7 |
| Example 6 | 3.3×10 | 8 |
| Example 7 | 3.2×10 | 9 |
| Example 8 | 6.3×10 | 5 |
| Example 9 | 17 | 10 |
| Example 10 | 18 | 10 |
| Example 11 | 13 | 10 |
| Example 12 | 14 | 10 |
| Example 13 | 7.1×10 | 5 |
| Example 14 | 7.0×10 | 5 |
| Example 15 | 6.8×10 | 5 |
| Example 16 | 6.9×10 | 5 |
| Example 17 | 8.3×10 | 4 |
| Comparative example 1 | 7.3×10 | 3 |
| Comparative example 2 | 4.8×10 | 6 |
| Comparative example 3 | 3.8×10 | 6 |
| Comparative example 4 | 4.3×10 | 5 |
It can be seen through table 3 that the technical scheme that embodiment 1 recorded can have good bactericidal effect concurrently at the bactericidal composition, and the effect can also prolong the fresh-keeping time of rose after the incision department of rose, finally makes the withering of flower obtain delaying to make the flower bloom keep the state of fresh and alive to obtain prolonging, avoided economic loss.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (1)
1. A nano-silver sterilizing composition for fresh flowers is characterized in that: the raw materials comprise 50 parts of agar, 5 parts of nano-silver, 22 parts of film-forming agent and 50 parts of water in parts by weight; the raw materials also comprise 20 parts of aloe extract, 3 parts of aminoethanol sulfate, 2 parts of alanine glutamate, 0.6 part of ammonium chloride and 1.5 parts of ammonium phosphate by weight; the film forming agent comprises aqueous polyurethane resin and titanium dioxide, the mass ratio of the aqueous polyurethane resin to the titanium dioxide is 1:6, and the film forming agent also comprises 4 parts by weight of behenamide and 3 parts by weight of indolebutyric acid.
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| CN107778497A (en) * | 2017-11-09 | 2018-03-09 | 华东师范大学 | A kind of compound covalently hydrogel and its preparation method and application discharged on demand |
| CN111253845A (en) * | 2020-03-09 | 2020-06-09 | 广东四维新材料有限公司 | Nano-silver antibacterial spray-formed protective film and preparation method thereof |
| CN111296114A (en) * | 2020-03-23 | 2020-06-19 | 华绿建设有限公司 | Maintenance method for landscaping |
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