阅读说明：本技术 一种玫瑰花液及其制备方法 (Rose liquid and preparation method thereof ) 是由 吴成亮 于 2019-10-10 设计创作，主要内容包括：本发明涉及一种玫瑰花液及其制备方法,所述制备方法包括：新鲜保加利亚玫瑰花瓣去叶洗净、加入活化水浸泡、活化处理、水蒸气蒸馏提取、稳定化处理、过滤、辐照灭菌、检验灌装,不包括油水分离步骤。此提取方法完整保留玫瑰所蕴含的大量黄酮及其它有效活性成分,且采用特殊活化水蒸气蒸馏提取技术,不经过任何防腐处理、有机溶剂浸泡,无毒副作用,纯自然加工花瓣,保证玫瑰花液安全性。(The invention relates to rose liquid and a preparation method thereof, wherein the preparation method comprises the following steps: removing leaves of fresh petals of Bulgaria rosea, cleaning, adding activated water for soaking, activating, extracting by steam distillation, stabilizing, filtering, irradiating for sterilization, inspecting and filling, wherein the steps of oil-water separation are not included. The extraction method completely retains a large amount of flavone and other effective active ingredients contained in flos Rosae Rugosae, adopts special activated steam distillation extraction technology, does not need any antiseptic treatment or organic solvent soaking, has no toxic and side effects, and can be used for processing petals naturally to ensure safety of flos Rosae Rugosae liquid.)

1. A preparation method of rose liquid is characterized by comprising the following steps:

removing leaves of fresh Bulgaria rose petals and cleaning;

adding activated water into the cleaned petals, soaking, and performing activation treatment to obtain an activated mixture;

steam distilling and extracting the activated mixture to obtain a distilled extract;

stabilizing the distilled extract to obtain a stabilized solution;

and filtering, irradiating, sterilizing, inspecting and filling the stable liquid to obtain the rose liquid.

2. The method according to claim 1, wherein the activated water is produced by: electrolyzing 10-15% potassium chloride water solution to obtain the activated water;

wherein the electrolysis conditions are as follows: the current intensity is 0.5-0.6A, the voltage is 25-30 v, the oxidation-reduction potential is-460 to-400 mV, and the fluid flow rate of the anode region and the cathode region is 8-9cm³/h。

3. The method according to claim 2, wherein the activated water soaking and activating treatment comprises:

the material-liquid ratio of the washed petals to the activated water is 1:2-1:7, and the pH value is 11-14;

stirring the mixed washed petals and the activated water at the temperature of 45-50 ℃ for 60-120 minutes;

after the stirring is stopped, decantation is carried out in an electric field which supplies a direct current of 0.5-0.6A and a voltage of 32-38 v for activation for 13-25 minutes.

4. The method according to claim 1, wherein the stabilization treatment is specifically: adding 0.3-0.5% of stabilizing component into the distilled extractive solution;

the stabilizing component is mixed liquid of nonionic surfactant and polyethylene glycol, or,

a mixture of a zwitterionic surfactant and PEG-40, or,

a mixed solution of an anionic surfactant, a nonionic surfactant and hydrogenated castor oil, or,

a mixed solution of a silicon surfactant and caprylyl glycol;

and dispersing the stable components in the distilled extracting solution by adopting an ultrasonic dispersion technology.

5. The method according to claim 4, wherein the molar ratio of the nonionic surfactant to the polyethylene glycol in the mixture of the nonionic surfactant and the polyethylene glycol is 1:2 to 1: 5.

6. The method according to claim 4, wherein the molar ratio of the zwitterionic surfactant to the PEG-40 in the mixture of the zwitterionic surfactant and PEG-40 is 3:1 to 1.5: 1.

7. The method according to claim 4, wherein the molar ratio of the silicon surfactant to the caprylyl glycol in the mixed solution of the silicon surfactant and caprylyl glycol is 2: 1.

8. The method of claim 4, wherein the ultrasonic dispersion frequency is 16KHZ to 50KHZ and the power is 30W to 80W.

9. A rose liquid obtained by the production method of claims 1 to 8.

10. Use of the rose liquid obtained in claim 7 for skin care.

Technical Field

The invention belongs to the field of cosmetics and health care products, and particularly relates to rose liquid and a preparation method thereof.

Background

The first use of roses originated in china. As early as in northern Song, it was recorded that the past dynasty Wang Gong was used all the time. According to the records in the book of the golden era 'postaromatic Huayuan', the color of the cypress jade is scratched with green and cloudy hair, and the rose face fat is silky. In the Yuan Dynasty, Miaofeng rose is made into a beverage which is sent to a palace for imperial medicine, and the imperial medicine takes the beverage as a raw material of imperial medicine, and the efficacy of a production method of 'Kete cake' recorded in the Imperial medical institute of diet is to promote the production of body fluid and stop cold. The fragrance of rose comes from volatile components of about three ten-thousandth of rose, and the rich and bright color comes from natural pigments such as haematochrome, yellow pigment and beta-carotene. In addition, it also contains substances beneficial for skin care such as quercitrin, fatty oil, and organic acid. During 5-6 months of each year, when the rose is about to bloom, fresh and tender flower buds of the rose are picked in batches, and the color, the fragrance and the taste of the rose are almost completely kept after strict disinfection, sterilization and air drying. 3 to 5 grams of specially processed buds are taken and soaked in boiling water for 5 minutes, sugar or honey can be added, or the buds are mixed with any favorite tea leaves for soaking, the fragrance is pleasant, and the tea has the effects of regulating qi and blood, soothing liver and relieving depression, reducing fat and losing weight, moistening skin and beautifying, and the like. Especially has magical effect on women's menstrual pain and menoxenia. The rose can not only be enjoyed by people and beautify the environment, but also has magical curative effect. In the middle of the text of materia medica, rose flower, clear but small turbid, mild but not violent, liver-softening and stomach-refreshing, qi-dredging and blood circulation-activating should be done by suffocation and stagnation without the disadvantages of acrid, warm and rigid dryness, and among qi-pushing-off and medicine-distributing, the rose flower is most rapid and most tame, and fragrant, almost nothing else. The rose contains more than 300 chemical components, such as aromatic alcohol, aldehyde, fatty acid, phenol and oil and fat containing essence, and can soften liver and wake stomach, sooth qi and activate blood, maintain beauty and keep young and refresh people when being eaten frequently. The flowers and roots of the rose can be used as medicine, has the functions of regulating qi, promoting blood circulation, astringing and the like, and is mainly used for treating diseases such as irregular menstruation, traumatic injury, liver qi and stomach pain, breast swelling and pain and the like. The pulp of the rose fruit can be made into jam with special flavor. The fruit contains rich VC and VP, and can prevent acute and chronic infectious diseases, coronary heart disease, liver disease, carcinogen, etc. some countries use fruit as raw material of concentrated vitamin preparation. The rose essential oil (named as rose dew) extracted from rose petal by distillation can activate male hormone and sperm, improve skin texture, and promote blood circulation and metabolism. In a word, the whole body of the rose is treasure, and the flower, root and fruit can be used as the medicine. For example, flowers can be used as decoction or pill, flowers can be drunk after drinking, roots can be used as caustics or decoction, and fruits can be used as pill.

In recent years, rose hydrosol and essential oil products extracted from roses are popular with women of all ages in the market, but the rose flavone and the effective components thereof contained in the rose hydrosol or rose water sold in the existing market are very little due to the limitation of a distillation process, and a large amount of preservatives are usually added in the preparation process to achieve the antiseptic effect, so that the irritation of the rose water is increased, and the allergic reaction is easily caused.

Disclosure of Invention

Aiming at the problems, the invention provides rose liquid and a preparation method thereof, mainly researches processing technology of Bulgaria rose petals, and is applied to the research of high-concentration rose hydrosol.

A preparation method of rose liquid comprises the following steps:

removing leaves of fresh Bulgaria rose petals and cleaning;

adding activated water into the cleaned petals, soaking, and performing activation treatment to obtain an activated mixture;

steam distilling and extracting the activated mixture to obtain a distilled extract;

stabilizing the distilled extract to obtain a stabilized solution;

and filtering, irradiating, sterilizing, inspecting and filling the stable liquid to obtain the rose liquid.

The application adopts precious Baogaria rose to extract rose liquid, not only keeps the super-permeability, anti-wrinkle effect and whitening effect of rose essential oil, but also plays the effects of moisturizing and moisturizing rose hydrosol. In addition, the rose liquid extraction technology of the rose petals does not have the step of separating rose essential oil, contains a large amount of rose stock solution and high-concentration rose essential oil components, and completely retains a large amount of effective components (such as rose essential oil and rose flavone) contained in the rose.

Further, the activated water is produced by: electrolyzing 10-15% potassium chloride water solution to obtain the activated water;

wherein the electrolysis conditions are as follows: current intensity of 0.5-0.6A, voltage of 25-30 v, oxidation-reduction potential of-460 to-400 mV, anode and cathode regionsThe flow velocity of the fluid is 8-9cm³/h。

Further, the activated water soaking and activating treatment comprises the following steps:

the material-liquid ratio of the washed petals to the activated water is 1:2-1:7, and the pH value is 11-14;

stirring the mixed washed petals and the activated water at the temperature of 45-50 ℃ for 60-120 minutes;

after the stirring is stopped, decantation is carried out in an electric field which supplies a direct current of 0.5-0.6A and a voltage of 32-38 v for activation for 13-25 minutes.

The soaking time in the steam distillation extraction is 0.5-2h, the distillation time is 2-6 h, the optimal soaking time is 1h and the distillation time is 5h determined by further experiments, and the extraction rate of the essential oil in the flower liquid is highest under the conditions.

In order to realize good fusion of water and oil components after distillation, the distilled extract is subjected to stabilization treatment after distillation extraction, and a mode of combining surfactant and ultrasonic wave is adopted.

Further, the stabilizing treatment specifically comprises: adding 0.3-0.5% of stabilizing component into the distilled extractive solution;

the stabilizing component is mixed liquid of nonionic surfactant and polyethylene glycol, or,

a mixture of a zwitterionic surfactant and PEG-40, or,

a mixed solution of an anionic surfactant, a nonionic surfactant and hydrogenated castor oil, or,

a mixed solution of a silicon surfactant and caprylyl glycol;

the stabilizing component is dispersed by ultrasonic dispersion technology.

Furthermore, in the mixed liquid of the nonionic surfactant and the polyethylene glycol, the molar ratio of the nonionic surfactant to the polyethylene glycol is 1:2-1: 5.

Furthermore, in the mixed solution of the zwitterionic surfactant and the PEG-40, the molar ratio of the zwitterionic surfactant to the PEG-40 is 3:1-1.5: 1.

Furthermore, in the mixed liquid of the silicon surfactant and the caprylyl glycol, the molar ratio of the silicon surfactant to the caprylyl glycol is 2: 1.

Furthermore, the ultrasonic dispersion frequency is 16KHZ-50KHZ, and the power is 30-80W.

The surfactant system selected by the application has the following basic characteristics of (1) better water solubility; (2) after being mixed with the distillate, the system can easily and quickly form the essential oil water-in-water type emulsion with high water content; (3) while the viscosity increases more than two-fold. Meanwhile, as the stable components are only added in a very small amount, the natural property of the product is furthest reserved while the fusion effect is achieved.

The invention also comprises the rose liquid obtained by the preparation method.

The invention also comprises application of the rose liquid obtained by the preparation method in skin care.

The rose liquid prepared by the method has obvious effect on skin care. The product obtained by the application meets the standard requirements of the light industry standard QB/T2660-2004 cosmetic water of the people's republic of China.

(1) Appearance: uniform transparent liquid without impurities;

(2) fragrance: natural rose fragrance;

(3) color: transparent colorless or yellowish color;

(4) heat resistance: keeping the temperature at (40 +/-1) ℃ for 24h, and no obvious character difference exists between the temperature after the temperature is restored to the room temperature and before the test;

(5) cold resistance: keeping the temperature at (5 +/-1) ℃ for 24h, and no obvious character difference exists between the temperature after the temperature is restored to the room temperature and before the test;

(6) PH (25 degrees): 4.0-8.5 (direct measurement);

(7) the total number of bacteria is less than or equal to 1000 CFU/g;

(8) the total amount of the mould and the microzyme is less than or equal to 100 CFU/g;

(9) CFU/G is not detected;

(10) staphylococcus aureus, CFU/g was not detected;

(11) pseudomonas aeruginosa, CFU/G was not detected;

(12) lead (calculated as PB) is less than or equal to 40 mg/kg;

(13) mercury (calculated as HG) is less than or equal to 1 mg/kg;

(14) arsenic (calculated AS AS) is less than or equal to 10 mg/kg;

(15) pseudomonas aeruginosa is not detected;

(16) methanol: less than or equal to 2000mg/kg

The preparation method of the rose liquid and the obtained rose liquid have the beneficial effects that:

(1) maintaining the effective components of intact flos Rosae Rugosae

By adopting the steam distillation extraction technology, the rose stock solution after distillation cooling does not enter an oil-water separator and directly enters a distillation retort for cooling, and the rose stock solution without extracting essential oil reserves complete effective components of rose: contains volatile oil (oleum Rosae Rugosae), rose flavone, rose ether, citronellol, nerol, eugenol, phenethyl alcohol, nonanol, benzyl alcohol, linalool, phenethyl acetate, and quercetin, bitter taste substance, tannin, gallic acid, carotene, haematochrome, etc.

(2) Technology for keeping active ingredients of natural products

The rose extract has the proliferation effect on stem cells in cell culture, has the effect of enhancing cell activity, and has the effect of activating skin. Can inhibit uricase, has body odor reducing effect, and can be used in antiperspirant cosmetic. Has certain effect on tyrosinase activity and has the effect of assisting in whitening skin.

(3) Has antioxidant effect

The rose extract has strong scavenging capability on DPPH (diphenylpicrin hydrazine radical) under the condition of low dose (0.2MG/ML) except that hydroxyl radical and superoxide radical are eliminated, the higher the concentration is, the better the effect is, and the rose liquid can be used as an antioxidant of cosmetics; has an inhibitory effect on lipoxygenase.

(4) Has high safety

By adopting a special activated steam distillation extraction technology, the stock solution is not subjected to an oil-water separation link, so that the concentration and purity of the extracted rose solution essential oil are higher, the medicinal value is higher, and the skin care effect is better. The rose flower liquid is completely made of natural rose petals, and is not subjected to any antiseptic treatment, the rose flower liquid is subjected to activation treatment before distilled water is distilled, so that the rose flower liquid does not need to be soaked by adding an organic solvent, and has no toxic or side effect.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

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 that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 shows the effect of soaking time on the extraction rate of essential oil components from rose liquid according to an embodiment of the present invention;

FIG. 2 shows the effect of distillation time on the extraction rate of essential oil components from rose liquid according to an embodiment of the present invention;

FIG. 3 shows the effect of group a, b, c, d surfactant to co-solvent molar ratio on interfacial tension according to examples a, b, c, d of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.

Example 1

1 kg of fresh petals of the Bulgaria rose are subjected to leaf removal and cleaning. Electrolyzing 15% potassium chloride water solution to obtain activated water, wherein the current intensity is 0.6A, the voltage is 30v, the oxidation-reduction potential is-460 mV, and the fluid flow rate of anode region and cathode region is 8cm³/h。

Adding activated water according to the weight ratio of 1:4, soaking for 0.5h, pH 12, stirring, maintaining at 45 deg.C for 60 min, decanting in electric field, providing 0.5A DC and 32W voltage for activating for 13 min, stopping activating, soaking for 1h, and steam distilling for 2h to obtain flos Rosae Rugosae distillate.

Example 2

1 kg of fresh petals of the Bulgaria rose are subjected to leaf removal and cleaning. Electrolyzing 13% potassium chloride water solution to obtain activated water, wherein the current intensity is 0.5A, the voltage is 30W, the oxidation-reduction potential is-400 mV, and the fluid flow rate of the anode region and the cathode region is 9cm³/h。

Adding activated water according to the weight ratio of 1:3, soaking for 1h, pH 11, stirring, maintaining at 50 deg.C for 100 min, decanting in electric field, providing 0.5A DC and 34W voltage for activating for 15 min, stopping activating, soaking for 0.5h, and steam distilling for 1.5h to obtain flos Rosae Rugosae distillate.

Comparative example 1

1 kg of fresh petals of the Bulgaria rose are subjected to leaf removal and cleaning. The direct distillation is prepared by adopting the traditional process: adding distilled water according to the weight ratio of 1:3, soaking for 1h, with pH of 6.44 + -0.4, and steam distilling for 1.5h to obtain flos Rosae Rugosae solution.

And (3) comparison process: the effective components, the component contents and the physicochemical indexes of the rose distillate extracted in the examples 1 and 2 and the comparative example 1 were measured and analyzed by a GC-MS gas chromatograph/mass spectrometer (model: 6890N, workstation: 5973NETWORK, manufactured by Agilent, USA), the specific measurement results are shown in Table 1, and the data in Table 1 is a summary of the chromatographic images of the extracted rose essential oil.

TABLE 1 effective ingredient amount of rose contained in examples 1 and 2 and comparative examples

Item	Example 1	Example 2	Comparative example (distilled water)
				Permill of volatile oil (oleum Rosae Rugosae)	2.93	2.85	1.81
Rose flavone%	2.6	1.8	1.5
				Rose oxide%	0.8	1.2	0.9
Citronellol%	36	38	30

And (3) comparing the results: it can be seen from table 1 that the rose distillate prepared in examples 1 and 2 has a significantly higher content of active substances than the rose distillate prepared by the conventional distillation process. The rose stock solution after distillation and cooling does not enter an oil-water separator and directly enters a distillation tank for cooling by adopting the water vapor distillation extraction technology, so that the rose stock solution retains complete effective components of the rose: contains volatile oil (oleum Rosae Rugosae), rose flavone, rose ether, citronellol, nerol, eugenol, phenethyl alcohol, nonanol, benzyl alcohol, linalool, phenethyl acetate, and quercetin, bitter taste substance, tannin, gallic acid, carotene, haematochrome, etc.

Distillation parameter and stability component determination

The applicant finds out through experiments that the steam distillation process of the invention is subjected to experimental research, and among the influencing factors of the process, the feed-liquid ratio > soaking time > distillation time. After the material-liquid ratio is determined to be 1:6, the optimal soaking time and the optimal distillation time are further determined through experiments within the ranges of 0.5-2h of soaking time and 2-6 h of distillation time.

The material-liquid ratio of 1:6 and the distillation time of 5h are adopted, the influence of different soaking times on the extraction rate of essential oil in the distilled rose liquid is researched, the extraction rate detection is carried out under the conditions of soaking for 0.25h, soaking for 0.5h, soaking for 1h and soaking for 2h, a soaking time-essential oil extraction rate standard curve is drawn, and the obtained standard curve is shown in figure 1.

The influence of different distillation times on the extraction rate of essential oil in rose liquid is studied by adopting a material-liquid ratio of 1:6 and a soaking time of 1.5 h. And (3) selecting conditions of distillation for 2h, 3h, 4h, 5h and 6h for extraction rate detection, drawing a distillation time-essential oil extraction rate standard curve, and obtaining the standard curve as shown in figure 2.

As can be seen from the graphs 1 and 2, when the ratio of the materials to the liquid is 1:6, the extraction rate of essential oil in rose liquid is the highest under the steam distillation process with the soaking time of 1h and the distillation time of 5 h.

The rose distillate then needs to be stabilized, which is particularly critical for the selection of stabilizing aids. The water-soluble paint has the following basic characteristics of (1) better water solubility; (2) after being mixed with crude oil, the system can easily and quickly form water-in-oil emulsion with high water content; (3) meanwhile, the viscosity of the system is greatly increased compared with that of a crude oil system, and at least the viscosity is more than 2 times of that of the crude oil system.

The inventors have tested the mixing behaviour of a large number of different emulsifying systems with distilled water in order to find a stabiliser system which meets the above requirements. The surfactant concentration used was 0.3% (mass fraction) and the cosolvent concentration was 0.15% (mass fraction), and the results in Table 2 were obtained by testing.

A large number of different emulsifying systems were tested for their mixing behavior with distilled water in order to find a stabilizer system which meets the above requirements. The surfactant concentration used was 0.3% (mass fraction) and the cosolvent concentration was 0.15% (mass fraction), and the results in Table 2 were obtained by testing.

TABLE 2 mixing behavior of different emulsifying systems with distilled water

As can be seen from table 2, the surfactant and co-solvent systems of systems nos. 1, 2, 3 and 4 do not achieve the beneficial combination of water solubility, emulsifiability and viscosity enhancement at the same time, while the surfactant and co-solvent systems of systems nos. a, b, c and d can achieve the beneficial three properties at the same time.

Subsequently, the interfacial properties of the four abcd systems, which are excellent in water solubility, emulsibility and viscosity increase, were further tested by adjusting the proportional relationship between the surfactant and the co-solvent.

The total concentration of the surfactant and the cosolvent is 0.3% (w), and the components are mixed according to the molar ratio of the corresponding proportion. After standing for 48 hours, the oil-water interfacial tension was measured. The surface tension is measured by adopting a drop volume method, the concentration and the surface tension corresponding to a turning point of a surface tension curve are respectively critical micelle concentration (cmc) and gamma cmc, and the saturated adsorption capacity (gamma ∞) is obtained by a Gibbs formula:

where γ is surface tension, c is surfactant concentration, and for an anionic surfactant system, where n is 1, the minimum adsorption area (Amin) of the surfactant molecule is:

wherein NA is an Avogastron constant.

Respectively adding the used agent types of a, b, c and d into a sample tube of a TX500C type spinning drop method interfacial tension instrument, injecting corresponding oil phase, keeping the temperature at 50 ℃ until the interfacial tension is stable, measuring the equilibrium interfacial tension, and rotating the angular velocity at 5000r s^-1。

And (3) testing results: the effect of different molar ratios of surfactant and co-solvent used in the mixed solution numbered abcd on interfacial tension is shown in figure 3.

From FIG. 3, in order to ensure better interfacial tension of the stable component system, the optimal molar ratio of pentaerythritol to polyethylene glycol in the mixed solution of pentaerythritol and polyethylene glycol which are nonionic surfactants in group a is 1:2-1: 5;

in the mixed solution of the group b of zwitterionic surfactants, namely sodium alcohol ether sulfate/pentaerythritol and PEG-40, the optimal molar ratio of the sodium alcohol ether sulfate/pentaerythritol to the PEG-40 is 1.5:1-1: 3;

in the mixed liquid of the group c silicon surface active agent DC8500 and the caprylyl glycol, the optimal molar ratio of DC8500 to caprylyl glycol is 2: 1;

in the group d, the optimal molar ratio of the zwitterion sulfobetaine to the PEG-40 hydrogenated castor oil is 3:1-1.5: 1.

Example 3

A mixture of pentaerythritol and polyethylene glycol in a molar ratio of 1:2 was added in an amount of 0.3% to the distilled extract of example 1, followed by ultrasonic dispersion at a frequency of 50KHZ and a power of 30 w. The sound intensity is 100w/cm²。

Example 4

0.3% of sulfonic acid in a molar ratio of 3:1 was added to the distillation extract of example 2Betaine base: PEG-40, and then ultrasonic dispersion is carried out, wherein the ultrasonic dispersion frequency is 40KHZ, and the power is 50 w. The sound intensity is 200w/cm²。

Comparative example 2

The rose extract obtained in comparative example 1 was subjected to oil-water separation to obtain two products, namely rose essential oil and hydrolat.

And (3) comparison process: the solutions of the roses of examples 3 and 4 and the essential oil of roses and hydrolat of comparative example 2 were applied to a facial mask paper and then immersed in the hydroxyl radical solution, and injected into a quartz capillary for ESR detection (electron spin resonance) for about 10 minutes by an electrocatalytic oxidation method. Superoxide radical and DPPH (diphenylpicrin radical) clearance was also tested, with results shown in table 3:

table 3 radical scavenging values in examples 3 and 4 and comparative example 2

Item	Example 3	Example 4	Comparative example 2 essential oil	Comparative example 2 hydrolat
					Hydroxyl radical clearance%	93	95	92	80
Superoxide radical clearance%	76	78	75	42
					DPPH clearance%	60	58	57	38

As can be seen from Table 3, the preparation method of the invention can achieve the antioxidant effect similar to that of pure essential oil at the same dosage, but more roses are needed for extracting the pure essential oil at the same dosage, so that the cost is lower in practice, and the antioxidant effect of the flower liquid is obviously better than that of hydrolat. Meanwhile, the rose liquid has the advantages that the rose extract has strong scavenging capability on DPPH (diphenylpicrin hydrazine radical) under the condition of low dose (0.2MG/ML) except that hydroxyl radicals and superoxide radicals are eliminated, the higher the concentration is, the better the effect is, and the rose liquid is a good antioxidant component of cosmetics and has the effect of delaying senescence. In addition, the rose liquid of the application also has a good inhibition effect on lipoxygenase.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.