Color-protecting and shape-preserving fresh flower preservation solution and application thereof

Abstract

The invention belongs to the technical field of preserved fresh flower production, and provides a color-protecting and shape-preserving fresh flower preservation solution and application thereof. The color-protecting and shape-preserving fresh flower preservation solution comprises the following raw materials in parts by weight: 1-2 parts of a shape-protecting agent, 2-3 parts of a pigment fixing agent, 0.8-1.2 parts of an antioxidant and 1-2 parts of a stabilizer. The color-protecting and shape-preserving fresh flower preserving fluid can be used for preparing preserved fresh flower products. The fresh flower preservation solution is simple in component and has excellent color-protecting and shape-preserving effects when being used for manufacturing preserved flowers, and the obtained preserved flowers are clear in veins, complete in shape, vivid in color, not prone to fading, similar to real flowers in touch and long in preservation time. When the color-protecting and shape-preserving fresh flower preservation liquid is used for preparing a preserved fresh flower product, the vivid preserved fresh flower can be obtained, the preparation process is short in time consumption, the preparation process is simplified, and popularization and large-scale production are facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of everlasting flower production, and in particular relates to a color-protecting and shape-preserving fresh flower preservation liquid and application thereof. Background Art

[0002] With the improvement of people's living standards, the development of science and technology, and the continuous iteration and updating of technology, people's pursuit of quality of life has become stronger. Flowers have become an indispensable item to embellish people's daily lives. However, the shelf life of flowers is limited. Temperature, soil, water, etc. will affect the life of flowers. In order to meet people's growing material and cultural needs, the beauty brought by flowers can be preserved to the greatest extent, and eternal flowers came into being.

[0003] Preserved Fresh Flower is also called preserved flower, ecological flower, and "flower that never fades" in foreign countries. Preserved Fresh Flower is made of fresh cut flowers such as roses, carnations, phalaenopsis, hydrangea, etc., and is processed by high-tech means through a series of complex processes such as dehydration, decolorization, drying, and dyeing. Preserved Fresh Flower is almost the same as fresh flowers in color, properties, and feel. It retains the characteristics of fresh flowers, and has richer colors, more uses, and a shelf life of at least 3 years. It is the most ideal flower deep-processing product for floral design, home decoration, and celebrations.

[0004] The production process of preserved flowers in the prior art mainly includes the following: (1) Soaking method: Put the fresh flowers into a mixture of glycerin and water in a certain proportion and soak them for several days to allow the flowers to absorb glycerin and water. After that, take out the flowers and dry them to completely absorb the liquid. However, the disadvantage of this method is that the liquid is prone to seepage, the flowers are moldy, and the color is darker in a high temperature environment. (2) Drying method: One of the common methods for making preserved flowers, select fresh flowers, hang them in a ventilated and dry place, avoid direct sunlight, and add some desiccants such as silica gel or salt before the flowers are completely dried to accelerate the drying process. The dried flowers can be used to make bouquets, wreaths, etc. of preserved flowers. Its disadvantage is that it takes a long time and is suitable for plant materials with high fiber content, low water content, small flower shape, and short stems; (3) Spraying method: It is a simple and fast method for making preserved flowers. Put the fresh flowers in a well-ventilated place and spray the flowers evenly with spray paint. After the sprayed paint is completely dry, the flowers become preserved flowers. The preserved flowers made by this method can choose different colors and effects according to personal preferences. However, the disadvantage of this method is that uneven spraying can easily lead to uneven dyeing and is time-consuming.

[0005] In the prior art, the production process of preserved flowers is mostly complicated and time-consuming, and the soaking liquid used to soak the flowers is mostly complex and troublesome to prepare, and some ingredients are even toxic. The preserved flowers produced are not satisfactory, have a short shelf life, and are easily distorted. In addition, preserved flowers have to go through multiple processes during their preparation. Due to the influence of factors such as temperature, time, and chemical soaking preparations, the color and shape of most of the preserved flowers obtained in the end are quite different from the original flowers, and they look more like fake flowers.

[0006] The Chinese invention patent with publication number CN104210311A discloses a method for preparing three-dimensional dried flowers, which specifically includes the following steps: 1) placing the fresh flowers to be processed in a dehydrating agent for dehydration to obtain dehydrated flowers; 2) using polypropylene plasticizer to vacuum impregnate the dehydrated flowers obtained in step 1) to obtain plasticized flowers; 3) hardening the plasticized flowers obtained in step 2) to obtain the three-dimensional dried flowers obtained by this method with bright colors and small color difference, but their shape and touch are not as good as real flowers. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the first object of the present invention is to provide a color-preserving and shape-preserving fresh flower preservation solution. The fresh flower preservation solution has simple ingredients and has excellent color-preserving and shape-preserving effects when used for the production of preserved flowers. The preserved flowers obtained have clear veins, complete shapes, realistic colors that are not easy to fade, and feel like real flowers, and can be preserved for a long time.

[0008] In view of the above-mentioned deficiencies in the prior art, the second purpose of the present invention is to provide an application of a color-preserving and shape-preserving fresh flower preservation solution in the preparation of preserved flower products. The application can not only obtain lifelike preserved flowers, but also shorten the production process, simplify the production process, and facilitate promotion and large-scale production.

[0009] In order to achieve the above object, the solution adopted by the present invention is:

[0010] A color-preserving and shape-preserving fresh flower preservation liquid comprises, by weight, 1-2 parts of a shape-preserving agent, 2-3 parts of a pigment fixing agent, 0.8-1.2 parts of an antioxidant and 1-2 parts of a stabilizer.

[0011] The application of the above-mentioned color-protecting and shape-preserving fresh flower preservation solution in the preparation of preserved flower products.

[0012] The color-protecting and shape-preserving flower preservation solution provided by the present invention and its application have the following beneficial effects:

[0013] The fresh flower preservation solution provided by the invention comprises a shape protectant, a pigment fixative, an antioxidant and a stabilizer in a specific ratio.

[0014] Among them, the main function of the shape-protecting agent is to maintain the shape and color of the everlasting flower and reduce deformation and fading during the drying process. By using the shape-protecting agent, the drying time can be greatly reduced, and the firmness, texture and color of the petals can be maintained. The main function of the pigment fixative is to maintain the bright color of the flower and prevent it from fading during the processing. By using the pigment fixative, the everlasting flower can maintain its original bright color, ensuring that it is still beautiful during long-term storage and display. Antioxidants have color protection and antioxidant effects, can prevent flowers from being oxidized and deteriorated, inhibit the oxidation reaction of flowers, maintain the freshness and quality of flowers, and extend the shelf life of flowers. Adding a stabilizer to the color-protecting and shape-preserving flower preservation solution can achieve the effect of emulsification and dispersion, can increase the surface tension between the raw materials, thereby obtaining a uniform and stable dispersion system, which is conducive to the absorption of the shape-protecting agent, the pigment fixative, and the antioxidant.

[0015] The fresh flower preservation liquid has simple ingredients. The preservation liquid within the above-mentioned ratio range has excellent color protection and shape preservation effects, can help the preserved flowers maintain their brightness and durability, and the prepared preserved flowers have clear veins, complete shapes, realistic colors that are not easy to fade, and feel like real flowers. They can be preserved for a long time, and no fading can be seen by the naked eye within 2-3 years. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be purchased commercially.

[0017] The following is a detailed description of a color-protecting and shape-preserving flower preservation solution and its application provided by an embodiment of the present invention.

[0018] The present embodiment provides a color-preserving and shape-preserving flower preservation solution, wherein the raw materials thereof include, by weight, 1-2 parts of a shape-preserving agent, 2-3 parts of a pigment fixing agent, 0.8-1.2 parts of an antioxidant, and 1-2 parts of a stabilizer.

[0019] The color-protecting and shape-preserving flower preservation liquid, the shape-preserving agent of which includes propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:4. Propylene glycol can play a good softening role on flowers, but due to the high density of propylene glycol, too much propylene glycol between petals will cause serious adhesion between petals. In the present application, after adding a certain proportion of ethanol and n-butanol to propylene glycol, the adhesion of petals can be significantly improved, thereby playing a better shape-preserving role.

[0020] The color-protecting and shape-preserving flower preservation solution has a pigment fixative comprising citric acid in a mass ratio of 2:1 and a magnesium chloride solution in a concentration of 35%. For flowers, the loss of water will cause the pH value in the cell fluid to decrease, thereby causing changes in the pigment structure and causing the color of the flower material to change. The pigment fixative of the present application is based on the principle of chemical color protection, and the color-preserving preparation is configured according to the cause of the color change of the petals during the drying process. The pH value in the flower material cell fluid can be changed, and the pigment molecules can be subjected to a replacement reaction or a complex reaction of introducing a group or grabbing a group to increase the stability of the pigment in the petals.

[0021] In this embodiment, the pigment fixative is citric acid added to the magnesium chloride solution, and the magnesium chloride solution can reduce the pH value of the citric acid. At the same time, magnesium chloride reacts with anthocyanidin under acidic conditions to produce new chromophores. According to the chemical property that anthocyanidin and divalent metal ions are easy to form metal complexes, anthocyanidin in fresh flowers can react with magnesium chloride to form complexes.

[0022] In this embodiment, the antioxidant includes one of vitamin C solution, L-ascorbic acid and L-sodium ascorbate. The stabilizer includes one of fatty acid diethanolamide and polyoxyethylene alkyl ether.

[0023] This embodiment also provides an application of a color-preserving and shape-preserving fresh flower preservation solution in the preparation of preserved flower products, including:

[0024] (1) picking fresh flowers, washing and drying them, cutting off the stems and leaves, spreading silica gel powder with a particle size of 0.5-1 mm in a sealed container to a thickness of 2-3 cm, placing the flowers in a sealed container and leaving them to stand for 24-48 hours to obtain pretreated flowers;

[0025] (2) soaking the pretreated flowers in a flower preservation solution at a temperature of 22-25° C. for 30-60 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -10° C. for 30 minutes, then freezing at -18° C. for 30 minutes, and then freezing at -32° C. for 30 minutes;

[0026] (3) Drying to obtain the everlasting flower; the drying conditions include: heating to 5°C and maintaining for 30 minutes, then heating to 10°C and maintaining for 40 minutes, then heating to 15°C and maintaining for 60 minutes.

[0027] The application of the color-protecting and shape-preserving flower preservation solution in the preparation of everlasting flower products comprises firstly using silica gel to partially physically dehydrate the flowers, immersing the flowers in the color-protecting and shape-preserving flower preservation solution for a period of time, and then gradient freeze-drying.

[0028] Before immersing the flower preservation solution, silica gel is first used to partially physically dehydrate the flowers, so that the flowers can more fully absorb the flower preservation solution. The flowers are immersed in the flower preservation solution for a period of time to facilitate the flowers to fully absorb the ingredients in the flower preservation solution. The vacuum freeze-drying method has certain particularities. The drying of the flower material is carried out under high vacuum conditions, which can minimize the changes in the color and ingredients of the flower material. It follows the principle of the physical color protection method.

[0029] In this embodiment, a gradient cooling and freezing method is used. At this time, the moisture of the flowers is not completely lost at once, which can reduce the damage to flower cells and plant fibers caused by the rapid change of humidity and moisture, thereby maintaining the flower shape to the greatest extent. In the drying process, a gradient heating method is also used to avoid damage to the flower shape caused by the instantaneous increase in temperature difference.

[0030] In this embodiment, the flower preservation liquid provided in the above embodiment is used, and chemical and physical color protection methods are combined. The eternal flower production steps of the above application of this application are adopted to obtain eternal flowers with clear veins, complete shapes, realistic colors that are not easy to fade, and a touch like real flowers, which can be preserved for a long time.

[0031] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0032] Example 1

[0033] The present embodiment provides a color-preserving and shape-preserving flower preservation solution, wherein the raw materials thereof include, by weight: 1.5 parts of a shape-preserving agent (propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:4), 2.5 parts of a pigment fixing agent (citric acid in a mass ratio of 2:1 and a magnesium chloride solution with a concentration of 35%), 1 part of a vitamin C solution, 1.5 parts of fatty acid diethanolamide and 50 parts of pure water.

[0034] Example 2

[0035] The present embodiment provides a flower preservation solution for protecting color and shape. The raw materials thereof include, by weight: 1 part of a shape-protecting agent (propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:4), 3 parts of a pigment fixing agent (citric acid in a mass ratio of 2:1 and a magnesium chloride solution with a concentration of 35%), 0.8 parts of a vitamin C solution, 2 parts of fatty acid diethanolamide and 50 parts of pure water.

[0036] Example 3

[0037] The present embodiment provides a flower preservation solution for protecting color and shape. The raw materials thereof include, by weight: 2 parts of a shape-protecting agent (propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:4), 2 parts of a pigment fixing agent (citric acid in a mass ratio of 2:1 and a magnesium chloride solution with a concentration of 35%), 1.2 parts of a vitamin C solution, 1 part of fatty acid diethanolamide and 50 parts of pure water.

[0038] Example 4

[0039] The present embodiment provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and then cutting off stems and leaves, spreading silica gel powder with a particle size of 0.8 mm in a sealed container to a thickness of 2.5 cm, placing the flowers in the container and allowing them to stand for 36 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in the flower preservation solution at a temperature of 24° C. for 40 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -10° C. for 30 minutes, then freezing at -18° C. for 30 minutes, and then freezing at -32° C. for 30 minutes; (3) drying to obtain preserved flowers; the drying conditions include: heating to 5° C. and maintaining for 30 minutes, then heating to 10° C. and maintaining for 40 minutes, and then heating to 15° C. and maintaining for 60 minutes.

[0040] Example 5

[0041] This embodiment provides an application of the color-protecting and shape-preserving flower preservation solution provided in Embodiment 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and cutting off stems and leaves, spreading silica gel powder with a particle size of 0.5 mm in a sealed container to a thickness of 3 cm, placing the flowers in the container and leaving them to stand for 24 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in the flower preservation solution at a temperature of 22° C. for 60 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -10° C. for 30 minutes, then freezing at -18° C. for 30 minutes, and then freezing at -32° C. for 30 minutes;

[0042] (3) Drying to obtain the everlasting flower; the drying conditions include: heating to 5°C and maintaining for 30 minutes, then heating to 10°C and maintaining for 40 minutes, then heating to 15°C and maintaining for 60 minutes.

[0043] Example 6

[0044] The present embodiment provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing and drying them, and then cutting off the stems and leaves, spreading silica gel powder with a particle size of 1 mm in a sealed container to a thickness of 2 cm, placing the flowers in the container and allowing them to stand for 48 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in the flower preservation solution at a temperature of 25° C. for 30 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -5° C. for 40 minutes, then freezing at -15° C. for 40 minutes, and then freezing at -28° C. for 40 minutes; (3) drying to obtain preserved flowers; the drying conditions include: heating to 8° C. and maintaining for 20 minutes, then heating to 12° C. and maintaining for 20 minutes, and then heating to 18° C. and maintaining for 20 minutes.

[0045] Comparative Example 1

[0046] The comparative example provides a color-preserving and shape-preserving flower preservation solution, wherein the raw materials thereof include, by weight: 0.8 parts of a shape-preserving agent (propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:4), 4 parts of a pigment fixing agent (citric acid in a mass ratio of 2:1 and a magnesium chloride solution with a concentration of 35%), 0.5 parts of a vitamin C solution, 3 parts of fatty acid diethanolamide and 50 parts of pure water.

[0047] Comparative Example 2

[0048] The comparative example provides a color-preserving and shape-preserving flower preservation solution, wherein the raw materials thereof include, by weight: 3 parts of a shape-preserving agent (propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:4), 1 part of a pigment fixing agent (citric acid in a mass ratio of 2:1 and a magnesium chloride solution with a concentration of 35%), 1.5 parts of a vitamin C solution, 0.8 parts of fatty acid diethanolamide and 50 parts of pure water.

[0049] Comparative Example 3

[0050] The comparative example provides a color-protecting and shape-preserving flower preservation solution, wherein the raw materials thereof include, by weight, 1.5 parts of propylene glycol, 2.5 parts of a pigment fixative (a citric acid solution having a mass ratio of 2:1 and a magnesium chloride solution having a concentration of 35%), 1 part of a vitamin C solution, 1.5 parts of fatty acid diethanolamide and 50 parts of pure water.

[0051] Comparative Example 4

[0052] The comparative example provides a color-preserving and shape-preserving flower preservation solution, and its raw materials include, by weight: 1.5 parts of a shape-preserving agent (propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:4), 2.5 parts of citric acid, 1 part of vitamin C solution, 1.5 parts of fatty acid diethanolamide and 50 parts of pure water.

[0053] Comparative Example 5

[0054] The comparative example provides a color-preserving and shape-preserving flower preservation solution, wherein the raw materials thereof include, by weight: 1.5 parts of a shape-preserving agent (propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:4), 2.5 parts of a pigment fixing agent (citric acid in a mass ratio of 2:1 and a magnesium chloride solution with a concentration of 40%), 1 part of a vitamin C solution, 1.5 parts of fatty acid diethanolamide and 50 parts of pure water.

[0055] Comparative Example 6

[0056] The comparative example provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and cutting off stems and leaves, soaking the flowers in a flower preservation solution at a temperature of 24° C. for 40 minutes, and cooling the flowers to a pre-treated fresh flower freeze by a gradient cooling method: the gradient cooling conditions are freezing at -10° C. for 30 minutes, then freezing at -18° C. for 30 minutes, and then freezing at -32° C. for 30 minutes; (3) drying to obtain the preserved flowers; the drying conditions include: heating to 5° C. and maintaining for 30 minutes, then heating to 10° C. and maintaining for 40 minutes, and then heating to 15° C. and maintaining for 60 minutes.

[0057] Comparative Example 7

[0058] The comparative example provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and cutting off stems and leaves, spreading silica gel powder with a particle size of 0.8 mm in a sealed container to a thickness of 2.5 cm, placing the flowers in a sealed container and allowing to stand for 36 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in a flower preservation solution at a temperature of 24° C. for 40 minutes, cooling to -32° C. and freezing for 1.5 hours; (3) drying to obtain preserved flowers; the drying conditions include: heating to 5° C. and maintaining for 30 minutes, then heating to 10° C. and maintaining for 40 minutes, then heating to 15° C. and maintaining for 60 minutes.

[0059] Comparative Example 8

[0060] The comparative example provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and cutting off stems and leaves, spreading silica gel powder with a particle size of 0.8 mm in a sealed container to a thickness of 2.5 cm, placing the flowers in the container and allowing them to stand for 36 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in the flower preservation solution at a temperature of 24° C. for 40 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -10° C. for 30 minutes, then freezing at -18° C. for 30 minutes, and then freezing at -32° C. for 30 minutes; (3) heating to 15° C., maintaining for 130 minutes, and drying to obtain preserved flowers.

[0061] Comparative Example 9

[0062] The comparative example provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and cutting off stems and leaves, spreading silica gel powder with a particle size of 2 mm in a sealed container to a thickness of 1 cm, placing the flowers in the container and allowing them to stand for 12 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in the flower preservation solution at a temperature of 24° C. for 40 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -10° C. for 30 minutes, then freezing at -18° C. for 30 minutes, and then freezing at -32° C. for 30 minutes; (3) drying to obtain preserved flowers; the drying conditions include: heating to 5° C. and maintaining for 30 minutes, then heating to 10° C. and maintaining for 40 minutes, and then heating to 15° C. and maintaining for 60 minutes.

[0063] Comparative Example 10

[0064] The present comparative example provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and then cutting off stems and leaves, spreading silica gel powder with a particle size of 0.8 mm in a sealed container to a thickness of 2.5 cm, placing the flowers in the container and allowing them to stand for 36 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in the flower preservation solution at a temperature of 20° C. for 60 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -10° C. for 30 minutes, then freezing at -18° C. for 30 minutes, and then freezing at -32° C. for 30 minutes; (3) drying to obtain preserved flowers; the drying conditions include: heating to 5° C. and maintaining for 30 minutes, then heating to 10° C. and maintaining for 40 minutes, and then heating to 15° C. and maintaining for 60 minutes.

[0065] Comparative Example 11

[0066] The present embodiment provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and then cutting off stems and leaves, spreading silica gel powder with a particle size of 0.8 mm in a sealed container to a thickness of 2.5 cm, placing the flowers in the container and allowing them to stand for 36 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in the flower preservation solution at a temperature of 24° C. for 40 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -5° C. for 40 minutes, then freezing at -15° C. for 40 minutes, and then freezing at -28° C. for 40 minutes; (3) drying to obtain preserved flowers; the drying conditions include: heating to 5° C. and maintaining for 30 minutes, then heating to 10° C. and maintaining for 40 minutes, and then heating to 15° C. and maintaining for 60 minutes.

[0067] Comparative Example 12

[0068] The present embodiment provides an application of the color-protecting and shape-preserving flower preservation solution provided in Example 1 in preparing a rose preserved flower product, comprising: (1) picking fresh flowers, washing, drying, and then cutting off stems and leaves, spreading silica gel powder with a particle size of 0.8 mm in a sealed container to a thickness of 2.5 cm, placing the flowers in the container and allowing them to stand for 36 hours to obtain pretreated flowers; (2) soaking the pretreated flowers in the flower preservation solution at a temperature of 24° C. for 40 minutes, and cooling the pretreated flowers by a gradient cooling method until the pretreated flowers are frozen: the gradient cooling conditions are freezing at -10° C. for 30 minutes, then freezing at -18° C. for 30 minutes, and then freezing at -32° C. for 30 minutes; (3) drying to obtain preserved flowers; the drying conditions include: heating to 8° C. and maintaining for 20 minutes, then heating to 12° C. and maintaining for 20 minutes, and then heating to 18° C. and maintaining for 20 minutes.

[0069] Experimental Example 1

[0070] Rose preserved flowers were prepared by using the color-protecting and shape-preserving fresh flower preservation solution provided by Examples 1-3 and Comparative Examples 1-5, and by using the color-protecting and shape-preserving fresh flower preservation solution provided by Example 4 in the preparation of rose preserved flower products, and Examples 1-3 and Comparative Examples 1-5 were set as experimental groups 1-8, and Examples 5-6 and Comparative Examples 6-12 were set as experimental groups 9-17.

[0071] This experimental example evaluates the color of the rose preserved flowers prepared in experimental groups 1-17:

[0072] Color evaluation indicators include: hue, color uniformity, and distortion degree.

[0073] The color evaluation results of the rose preserved flowers prepared in experimental groups 1-17 are shown in Table 1.

[0074] Table 1 Color evaluation results of rose preserved flowers

[0075]

[0076]

[0077] As can be seen from the data in Table 1, experimental groups 1-3 and experimental groups 9-10 used the color-protecting and shape-preserving flower preservation solution provided by the present application, and its application in the preparation of preserved flower products. The color of the prepared preserved rose flowers is close to that of real flowers, bright in color, and uniform in color. This indicates that the formula and proportion of the color-protecting and shape-preserving flower preservation solution provided by the present application, especially the use of the pigment fixative defined in the present application, and the steps and process parameters involved in the preparation of preserved flower products can be coordinated, thereby having an excellent color protection effect.

[0078] Experimental Example 2

[0079] Rose preserved flowers were prepared by using the color-protecting and shape-preserving fresh flower preservation solution provided by Examples 1-3 and Comparative Examples 1-5, and by using the color-protecting and shape-preserving fresh flower preservation solution provided by Example 4 in the preparation of rose preserved flower products, and Examples 1-3 and Comparative Examples 1-5 were set as experimental groups 1-8, and Examples 5-6 and Comparative Examples 6-12 were set as experimental groups 9-17.

[0080] This experimental example evaluates the appearance of the rose preserved flowers prepared in experimental groups 1-17:

[0081] Appearance morphology evaluation indicators include: flower shape, petal wrinkles, curling degree, and petal elasticity.

[0082] The appearance morphology evaluation results of the rose preserved flowers prepared in experimental groups 1-17 are shown in Table 2.

[0083] Table 2 Evaluation results of the appearance of rose preserved flowers

[0084] Group No. Appearance evaluation Experimental Group 1 The shape of the flower is little different from that of a real flower, the petals are almost wrinkle-free and curl-free, and the petals are elastic Experimental Group 2 The shape of the flower is little different from that of a real flower, the petals are almost wrinkle-free and curl-free, and the petals are elastic Experimental Group 3 The shape of the flower is little different from that of a real flower, the petals are almost wrinkle-free and curl-free, and the petals are elastic Experimental Group 4 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals are less elastic. Experimental Group 5 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 6 The shape of the flower is quite different from that of a real flower. The petals have a lot of wrinkles and curls, and the petals are less elastic. Experimental Group 7 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 8 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 9 The shape of the flower is little different from that of a real flower, the petals are almost wrinkle-free and curl-free, and the petals are elastic Experimental Group 10 The shape of the flower is little different from that of a real flower, the petals are almost wrinkle-free and curl-free, and the petals are elastic Experimental Group 11 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 12 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 13 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 14 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 15 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 16 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity. Experimental Group 17 The shape of the flower is somewhat different from that of a real flower. The petals have a small amount of wrinkles and curls, and the petals have a certain degree of elasticity.

[0085] As can be seen from the data in Table 2, experimental groups 1-3 and experimental groups 9-10 used the color-protecting and shape-preserving fresh flower preservation solution provided by the present application, and its application in the preparation of preserved flower products. The shape of the prepared preserved rose flowers is slightly different from that of real flowers, the petals are almost wrinkle-free and curled, and the petals are elastic. This shows that the formula and ratio of the color-protecting and shape-preserving fresh flower preservation solution provided by the present application, especially the shape-protecting agent defined in the present application, and the steps in the application process of preparing preserved flower products and the process parameters involved in each step can be coordinated, thereby having a shape-protecting effect.

[0086] Experimental Example 3

[0087] Rose preserved flowers were prepared by using the color-protecting and shape-preserving fresh flower preservation solution provided by Examples 1-3 and Comparative Examples 1-5, and by using the color-protecting and shape-preserving fresh flower preservation solution provided by Example 4 in the preparation of rose preserved flower products, and Examples 1-3 and Comparative Examples 1-5 were set as experimental groups 1-8, and Examples 5-6 and Comparative Examples 6-12 were set as experimental groups 9-17.

[0088] This experimental example evaluates the fading time of the rose preserved flowers prepared in experimental groups 1-17:

[0089] The fading time index includes: storing the preserved rose flowers at 5°C, room temperature and 40°C and observing their fading time.

[0090] The evaluation results of the fading time of the rose preserved flowers prepared in experimental groups 1-17 are shown in Table 3.

[0091] Table 3 Evaluation results of fading time of rose preserved flowers

[0092] Group No. 5℃ Room temperature 40℃ Experimental Group 1 5 years 3 years 8 months Experimental Group 2 5 years 3 years 8 months Experimental Group 3 5 years 3 years 8 months Experimental Group 4 4 years 2 years 6 months Experimental Group 5 4 years 2 years 6 months Experimental Group 6 2 years 1 year 3 months Experimental Group 7 2 years 1 year 3 months Experimental Group 8 4 years 2 years 6 months Experimental Group 9 5 years 3 years 8 months Experimental Group 10 5 years 3 years 8 months Experimental Group 11 3 years 2 years 6 months Experimental Group 12 4 years 2 years 6 months Experimental Group 13 4 years 2 years 6 months Experimental Group 14 4 years 2 years 6 months Experimental Group 15 4 years 2 years 6 months Experimental Group 16 4 years 2 years 6 months Experimental Group 17 4 years 2 years 6 months

[0093] As can be seen from the data in Table 3, experimental groups 1-3 and experimental groups 9-10 used the color-protecting and shape-preserving flower preservation solution provided by the present application, and its application in the preparation of everlasting flower products. The prepared rose everlasting flowers can extend the fading time to a greater extent, and the color preservation effect is better. It is explained that the formula and ratio of the color-protecting and shape-preserving flower preservation solution provided by the present application, especially the shape-protecting agent and pigment fixing agent defined in the present application, and the steps in the application process of preparing everlasting flower products and the process parameters involved in each step can be coordinated, so as to have excellent color preservation effect.

[0094] In summary, the color-protecting and shape-preserving fresh flower preservation solution provided by the present invention has a simple composition and is used for the production of everlasting flowers. It has excellent color-protecting and shape-preserving effects, can help everlasting flowers maintain the bright color and durability of the flowers, and the everlasting flowers obtained have clear veins, complete shapes, realistic colors that are not easy to fade, and feel like real flowers, and have a long shelf life. The use of the color-protecting and shape-preserving fresh flower preservation solution provided by the present application in the preparation of everlasting flower products uses the fresh flower preservation solution provided in the present embodiment, and combines chemical and physical color protection methods, so that not only can lifelike everlasting flowers be obtained, but also the production process is short in time and the production process is simplified, which is conducive to promotion and large-scale production.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A color-protecting and shape-preserving fresh flower preservation solution, characterized in that: The raw materials include, by weight: 1-2 parts of a shape protectant, 2-3 parts of a pigment fixative, 0.8-1.2 parts of an antioxidant and 1-2 parts of a stabilizer.

2. The color-protecting and shape-preserving fresh flower preservation solution according to claim 1, characterized in that: The shape protecting agent comprises propylene glycol, ethanol and n-butanol in a mass ratio of 1:2:

4.

3. The color-protecting and shape-preserving fresh flower preservation solution according to claim 1, characterized in that: The pigment fixing agent comprises citric acid with a mass ratio of 2:1 and a magnesium chloride solution with a concentration of 35%.

4. The color-protecting and shape-preserving fresh flower preservation solution according to claim 1, characterized in that: The antioxidant includes one of vitamin C solution, L-ascorbic acid and sodium L-ascorbate.

5. The color-protecting and shape-preserving fresh flower preservation solution according to claim 1, characterized in that: The stabilizer includes one of fatty acid diethanolamide and polyoxyethylene alkyl ether.

6. Use of the color-protecting and shape-preserving fresh flower preservation solution according to any one of claims 1 to 5 in the preparation of preserved flower products.

7. The use of the color-protecting and shape-preserving fresh flower preservation solution according to claim 6 in the preparation of preserved flower products, characterized in that: include: (1) picking fresh flowers, washing and drying them, cutting off the stems and leaves, spreading silica gel powder with a particle size of 0.5-1 mm in a sealed container to a thickness of 2-3 cm, placing the flowers in the container and leaving them to stand for 24-48 hours to obtain pretreated flowers; (2) soaking the pretreated fresh flowers in the fresh flower preservation solution and cooling the pretreated fresh flowers until the pretreated fresh flowers are frozen; (3) Drying will produce everlasting flowers.

8. The use of the color-protecting and shape-preserving fresh flower preservation solution according to claim 7 in the preparation of preserved flower products, characterized in that: In step (2), the temperature of the flower preservation solution is 22-25° C., and the soaking time before cooling is 30-60 minutes.

9. The use of the color-protecting and shape-preserving fresh flower preservation solution according to claim 7 in the preparation of preserved flower products, characterized in that: In step (2), the temperature is lowered by a gradient cooling method: freezing at -10°C for 30 min, then freezing at -18°C for 30 min, and then freezing at -32°C for 30 min.

10. The use of the color-protecting and shape-preserving fresh flower preservation solution according to claim 7 in the preparation of preserved flower products, characterized in that: In step (3), drying includes: heating to 5°C and maintaining for 30 minutes, then heating to 10°C and maintaining for 40 minutes, then heating to 15°C and maintaining for 60 minutes.

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