A plant composition with whitening and freckle-removing effects and its application

Abstract

The present invention relates to a plant composition with whitening and freckle-removing effects and its application, belonging to the technical field of compositions. The plant composition comprises the following raw materials: sea fennel extract, osmanthus extract, barley extract, smooth fruit elm bark extract, black sesame extract, thyme extract, spinach extract and a solvent. The present invention combines sea fennel extract, osmanthus extract and barley extract, starting from a triple whitening mechanism of inhibiting tyrosinase activity, inhibiting melanin formation caused by α-MSH, and inhibiting melanocyte activity, to synergistically improve the whitening effect of the composition. In addition, three freckle-removing plant extracts are added to the formula of the present invention. The smooth fruit elm bark extract is used to reduce freckles, the black sesame extract is used to enhance the cell melanin metabolism ability, and the thyme extract is used to stimulate the growth of new cells. The three make the composition prepared by the present invention achieve a synergistic effect of freckle-removing from three perspectives.

Description

Technical Field

[0001] The present invention belongs to the technical field of compositions, and specifically relates to a plant composition with whitening and freckle-removing effects and its application. Background Art

[0002] With the progress of society and the improvement of living standards, people's pursuit of beauty has increased day by day. Problems such as freckles and dullness not only affect personal appearance but may also reduce personal confidence. Therefore, whitening and freckle-removing have become hot topics in the cosmetics industry. At present, many whitening and freckle-removing products on the market mainly rely on chemically synthesized ingredients such as hydroquinone, arbutin, kojic acid glycoside, etc. Although these ingredients can inhibit the production of melanin to a certain extent, they may have certain irritations, causing adverse reactions such as skin allergies and damage to the skin barrier function. Therefore, compared with chemical components, plant extracts are safer and have less irritation and toxicity to the skin. Moreover, plant extracts contain various active ingredients such as flavonoids, polyphenols, polysaccharides, etc. These ingredients have different biological activities and can act synergistically to exert the effects of whitening and freckle-removing. Nowadays, there are also many cosmetics prepared purely with plant compositions as efficacy additives on the market, but these plant compositions are still difficult to combine the effects of whitening and freckle-removing. Therefore, developing a plant composition with whitening and freckle-removing effects has important practical significance and market prospects. Such a plant composition can give full play to the advantages of plant extracts and provide consumers with a safe and effective whitening and freckle-removing product. Summary of the Invention

[0003] The purpose of the present invention is to provide a plant composition with whitening and freckle-removing effects and its application, and solve the problem of poor whitening and freckle-removing effects existing in the existing plant composition technology.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A plant composition with whitening and freckle-removing effects, the plant composition specifically comprises the following raw materials in parts by weight:

[0006]

[0007] As a preferred technical solution of the present invention, the plant composition further comprises spinach extract.

[0008] As a preferred technical solution of the present invention, the spinach extract is 0.2 - 0.25 parts by weight.

[0009] As a preferred technical solution of the present invention, the extraction raw material of the Crithmum maritimum extract is the whole plant of Crithmum maritimum; the extraction raw material of the osmanthus extract is the flower of osmanthus; the extraction raw material of the barley extract is the malt of barley; the extraction raw material of the smooth-leaved elm bark extract is the bark of smooth-leaved elm; the extraction raw material of the black sesame extract is the seeds of sesame; the extraction raw material of the thyme extract is the whole plant of thyme;

[0010] Crithmum maritimum, also known as Sesuvium portulacastrum and Saint Peter's Herb, is a perennial plant of the Apiaceae family. The Crithmum maritimum extract is rich in ingredients such as vitamins and flavonoid compounds, and has an excellent effect of inhibiting the activity of tyrosinase;

[0011] Osmanthus is an evergreen tree or shrub of the genus Osmanthus in the Oleaceae family. The osmanthus extract is rich in the phenylpropanoid glycoside acteoside component, and can effectively inhibit the synthesis of melanin in B16 melanoma cells induced by α-MSH;

[0012] Barley is an annual herb of the genus Hordeum in the Poaceae family. The barley extract contains ingredients such as carbohydrates, proteins, niacin and tocotrienols, and has the effect of inhibiting the activity of melanocytes;

[0013] Smooth-leaved elm is a plant of the genus Holoptelea in the Combretaceae family. The smooth-leaved elm bark extract mainly contains polyphenol compounds, flavonoid compounds and astragalus compounds, etc., which can increase the absorption of VC by fibroblasts, and can further inhibit the production and metastasis of melanin, thereby effectively promoting the synthesis of collagen and reducing skin spots;

[0014] Black sesame, also known as Sesamum indicum, Sesamum orientale, Black Sesame, Oil Sesame, etc., is the black seed of the annual herbaceous plant Sesamum indicum of the Sesamum genus in the Pedaliaceae family. The black sesame extract is rich in ingredients such as proteins, fats and lignan compounds, and has a promoting effect on the proliferation of fibroblast cells, can effectively activate the skin, thereby stimulating cell activity, enhancing the cell melanin metabolism ability and obtaining the effect of removing skin spots;

[0015] Thyme, also known as Thymus vulgaris, is a perennial shrub-like herb of the genus Thymus in the Lamiaceae family. The main components of the thyme extract are triterpenoid saponin compounds, phenolic acid compounds and flavonoid compounds, and have the effects of sterilization, stimulating the growth of new cells and lightening epidermal pigments.

[0016] As a preferred technical solution of the present invention, the extraction raw material of the spinach extract is the leaf stalk of spinach;

[0017] Spinach, also known as Chenopodium album and Spinacia oleracea, is an annual or biennial herb of the genus Spinacia in the Amaranthaceae family. The spinach extract can effectively promote the production of adenosine triphosphate, enhance the skin's metabolic function to a certain extent and play a role in promoting penetration.

[0018] As a preferred technical solution of the present invention, the plant composition further comprises 70 - 80 parts by weight of a solvent.

[0019] As a preferred technical solution of the present invention, the solvent includes any one of deionized water, propylene glycol, and 1,3 - butanediol.

[0020] As a preferred technical solution of the present invention, the preparation methods of the Crithmum maritimum extract, osmanthus extract, barley extract, and black sesame extract include the following steps:

[0021] Respectively dry and crush the extraction raw materials of the Crithmum maritimum extract, osmanthus extract, barley extract, and black sesame extract, sieve them, add an extraction solvent to the sieved extraction raw materials for reflux extraction, filter, control the temperature and reduce the pressure to concentrate and remove the solvent, and spray - dry to obtain the Crithmum maritimum extract, osmanthus extract, barley extract, and black sesame extract.

[0022] Further, the sieving is through a 60 - 80 - mesh sieve; the time for reflux extraction is 1 - 1.5 h; the temperature for controlling the temperature and reducing the pressure to concentrate and remove the solvent is 40 - 45 °C; the temperature for spray - drying is 90 °C.

[0023] Further, the extraction solvents are all ethanol solutions with a volume fraction of 50%.

[0024] Further, the dosage ratio of the Crithmum maritimum extract to the extraction solvent is 1 g:15 mL; the dosage ratio of the osmanthus extract to the extraction solvent is 1 g:11 mL; the dosage ratio of the barley extract to the extraction solvent is 1 g:10 mL; the dosage ratio of the black sesame extract to the extraction solvent is 1 g:10 mL.

[0025] As a preferred technical solution of the present invention, the preparation methods of the Ulmus virens var. laevis bark extract, thymus extract, and spinach extract include the following steps:

[0026] Respectively dry and crush the extraction raw materials of the Ulmus virens var. laevis bark extract, thymus extract, and spinach extract, sieve them, add an extraction solvent to the sieved extraction raw materials and control the temperature for microwave extraction to obtain an extraction solution, centrifuge and filter the extraction solution to obtain residue A and filtrate A, add the extraction solvent with the same solid - liquid ratio to residue A and repeat the extraction, centrifugation, and filtration to obtain residue B and filtrate B, mix filtrate A and filtrate B evenly and concentrate, and control the temperature for drying to obtain the Ulmus virens var. laevis bark extract, thymus extract, and spinach extract.

[0027] Further, the sieving is through a 60 - 80 - mesh sieve.

[0028] Further, the extraction solvents are all deionized water.

[0029] Furthermore, the dosage ratio of the smooth fruit elm bark extract to the extraction solvent is 1 g: 18 mL; the dosage ratio of the thyme extract to the extraction solvent is 1 g: 15 mL; the dosage ratio of the spinach extract to the extraction solvent is 1 g: 10 mL.

[0030] Furthermore, for the smooth fruit elm bark extract, the temperature of controlled-temperature microwave extraction is 60 - 65 °C, the power is 700 - 740 w, and the time is 5 - 8 min; for the thyme extract, the temperature of controlled-temperature microwave extraction is 30 - 32 °C, the power is 250 - 270 w, and the time is 8 - 12 min; for the spinach extract, the temperature of controlled-temperature microwave extraction is 23 - 25 °C, the power is 200 - 220 w, and the time is 8 - 10 min.

[0031] Furthermore, the speed of centrifugation is 3500 - 3600 r / min for all, and the time is 15 - 20 min for all; the concentration is to concentrate to 6 - 8% of the total volume of filtrate A and filtrate B; the temperature of controlled-temperature drying is 60 - 70 °C for all, and the time is 2 - 3 h for all.

[0032] As a preferred technical solution of the present invention, the preparation method of the plant composition with whitening and freckle-removing effects specifically includes the following steps:

[0033] Mix the sea fennel extract, osmanthus extract, barley extract, smooth fruit elm bark extract, black sesame extract, thyme extract, and spinach extract evenly, and then add the solvent and stir with temperature control to obtain the finished plant composition.

[0034] As a preferred technical solution of the present invention, the temperature of the temperature-controlled stirring is 23 - 25 °C, and the time is 1 - 2 h.

[0035] The application of a plant composition with whitening and freckle-removing effects is to add the plant composition to skin care products at a mass percentage of 3 - 5%.

[0036] As a preferred technical solution of the present invention, the skin care products include but are not limited to toner, essence, cream, and mask.

[0037] The beneficial effects of the present invention:

[0038] (1) The present invention discloses a plant composition with whitening and freckle-removing effects. By compounding the sea fennel extract, osmanthus extract, and barley extract, starting from the triple whitening mechanism of inhibiting the activity of tyrosinase, inhibiting the formation of melanin caused by α-MSH, and inhibiting the activity of melanocytes, the whitening effect of the plant composition is synergistically improved.

[0039] (2) Three kinds of plant extracts for removing freckles are added to the formula of the present invention. The extract of Ulmus glaucescens Franch. var. leiophylla Schneid. is used to reduce freckles, the extract of black sesame is used to enhance the melanin metabolism ability of cells, and the extract of thymus is used to stimulate the growth of new cells. From three aspects, the plant composition prepared by the present invention achieves the synergistic effect of removing freckles.

[0040] (3) On the above basis, the present invention also adds spinach extract, and its osmotic assistance effect effectively assists the other components in the system to further strengthen the whitening and freckle-removing efficacy of the system. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0042] Embodiment 1

[0043] Extracts of Crithmum maritimum, Osmanthus fragrans, Hordeum vulgare and black sesame are prepared respectively. The preparation method includes the following steps:

[0044] The extraction raw materials of the extracts of Crithmum maritimum, Osmanthus fragrans, Hordeum vulgare and black sesame are dried and crushed respectively, passed through a 60-mesh sieve, and the sieved extraction raw materials are added with an ethanol solution with a volume fraction of 50% and refluxed for extraction for 1 h, filtered, and the solvent is removed by vacuum concentration at a controlled temperature of 43 °C, and spray-dried at 90 °C to obtain the extracts of Crithmum maritimum, Osmanthus fragrans, Hordeum vulgare and black sesame respectively;

[0045] The extraction raw material of the extract of Crithmum maritimum is the whole plant of Crithmum maritimum, and the dosage ratio of the extract of Crithmum maritimum to the ethanol solution is 1 g:15 mL; the extraction raw material of the extract of Osmanthus fragrans is the flower of Osmanthus fragrans, and the dosage ratio of the extract of Osmanthus fragrans to the ethanol solution is 1 g:11 mL; the extraction raw material of the extract of Hordeum vulgare is the malt of Hordeum vulgare, and the dosage ratio of the extract of Hordeum vulgare to the ethanol solution is 1 g:10 mL; the extraction raw material of the extract of black sesame is the seed of sesame, and the dosage ratio of the extract of black sesame to the ethanol solution is 1 g:10 mL.

[0046] Extracts of Ulmus glaucescens Franch. var. leiophylla Schneid., thymus and spinach are prepared respectively. The preparation method includes the following steps:

[0047] The extraction raw materials of the bark extract of Ulmus macrocarpa Hance var. glabra Nakai, the extract of Thymus vulgaris L., and the extract of Spinacia oleracea L. are dried, crushed, and passed through an 80-mesh sieve respectively. Deionized water is added to the sieved extraction raw materials, and microwave extraction is carried out under temperature control to obtain an extraction solution. The extraction solution is centrifuged at a speed of 3500 r / min for 15 min and filtered to obtain residue A and filtrate A. Deionized water with the same solid-to-liquid ratio is added to residue A, and extraction, centrifugation, and filtration are repeated to obtain residue B and filtrate B. Filtrate A and filtrate B are mixed evenly and concentrated to 8% of the total volume of filtrate A and filtrate B, and dried at 60 °C for 2 h to obtain the bark extract of Ulmus macrocarpa Hance var. glabra Nakai, the extract of Thymus vulgaris L., and the extract of Spinacia oleracea L. respectively;

[0048] The extraction raw material of the bark extract of Ulmus macrocarpa Hance var. glabra Nakai is the bark of Ulmus macrocarpa Hance var. glabra Nakai; the extraction raw material of the extract of Thymus vulgaris L. is the whole herb of Thymus vulgaris L.; the extraction raw material of the extract of Spinacia oleracea L. is the leaf and stem of Spinacia oleracea L.

[0049] The dosage ratio of the bark extract of Ulmus macrocarpa Hance var. glabra Nakai to deionized water is 1 g:18 mL. The temperature of microwave extraction of the bark extract of Ulmus macrocarpa Hance var. glabra Nakai under temperature control is 60 °C, the power is 740 w, and the time is 5 min; the dosage ratio of the extract of Thymus vulgaris L. to deionized water is 1 g:15 mL. The temperature of microwave extraction of the extract of Thymus vulgaris L. under temperature control is 31 °C, the power is 250 w, and the time is 10 min; the dosage ratio of the extract of Spinacia oleracea L. to deionized water is 1 g:10 mL. The temperature of microwave extraction of the extract of Spinacia oleracea L. under temperature control is 23 °C, the power is 210 w, and the time is 8 min.

[0050] Example 2

[0051] The extraction raw materials of the extract of Crithmum maritimum L., the extract of Osmanthus fragrans Lour., the extract of Hordeum vulgare L., and the extract of Sesamum indicum L. are dried, crushed, and passed through an 80-mesh sieve respectively. An ethanol solution with a volume fraction of 50% is added to the sieved extraction raw materials for reflux extraction for 1 h, filtered, and the solvent is removed by reduced pressure concentration at 40 °C, and spray-dried at 90 °C to obtain the extract of Crithmum maritimum L., the extract of Osmanthus fragrans Lour., the extract of Hordeum vulgare L., and the extract of Sesamum indicum L. respectively;

[0052] The extraction raw material of the extract of Crithmum maritimum L. is the whole herb of Crithmum maritimum L., and the dosage ratio of the extract of Crithmum maritimum L. to the ethanol solution is 1 g:15 mL; the extraction raw material of the extract of Osmanthus fragrans Lour. is the flower of Osmanthus fragrans Lour., and the dosage ratio of the extract of Osmanthus fragrans Lour. to the ethanol solution is 1 g:11 mL; the extraction raw material of the extract of Hordeum vulgare L. is the malt of Hordeum vulgare L., and the dosage ratio of the extract of Hordeum vulgare L. to the ethanol solution is 1 g:10 mL; the extraction raw material of the extract of Sesamum indicum L. is the seed of Sesamum indicum L., and the dosage ratio of the extract of Sesamum indicum L. to the ethanol solution is 1 g:10 mL.

[0053] Prepare the bark extract of Ulmus macrocarpa Hance var. glabra Nakai, the extract of Thymus vulgaris L., and the extract of Spinacia oleracea L. respectively. The preparation method includes the following steps:

[0054] Dry and crush the extraction raw materials of the bark extract of Ulmus macrocarpa Hance var. glabra Nakai, the extract of Thymus vulgaris L., and the extract of Spinacia oleracea L. respectively, and pass through a 60-mesh sieve. Add deionized water to the sieved extraction raw materials and perform temperature-controlled microwave extraction to obtain an extract solution. Centrifuge the extract solution at a speed of 3600 r / min for 17.5 min, and filter to obtain residue A and filtrate A. Add deionized water with the same solid-liquid ratio to residue A and repeat the extraction, centrifugation, and filtration to obtain residue B and filtrate B. Mix filtrate A and filtrate B evenly and concentrate to 6% of the total volume of filtrate A and filtrate B, and dry at 65 °C for 2 h to obtain the bark extract of Ulmus macrocarpa Hance var. glabra Nakai, the extract of Thymus vulgaris L., and the extract of Spinacia oleracea L. respectively;

[0055] The extraction raw material of the bark extract of Ulmus macrocarpa Hance var. glabra Nakai is the bark of Ulmus macrocarpa Hance var. glabra Nakai; the extraction raw material of the extract of Thymus vulgaris L. is the whole herb of Thymus vulgaris L.; the extraction raw material of the extract of Spinacia oleracea L. is the leaf and stem of Spinacia oleracea L.

[0056] The dosage ratio of the bark extract of Ulmus macrocarpa Hance var. glabra Nakai to deionized water is 1 g:18 mL. The temperature of the temperature-controlled microwave extraction of the bark extract of Ulmus macrocarpa Hance var. glabra Nakai is 65 °C, the power is 720 w, and the time is 6.5 min; the dosage ratio of the extract of Thymus vulgaris L. to deionized water is 1 g:15 mL. The temperature of the temperature-controlled microwave extraction of the extract of Thymus vulgaris L. is 30 °C, the power is 270 w, and the time is 8 min; the dosage ratio of the extract of Spinacia oleracea L. to deionized water is 1 g:10 mL. The temperature of the temperature-controlled microwave extraction of the extract of Spinacia oleracea L. is 24 °C, the power is 200 w, and the time is 9 min.

[0057] Example 3

[0058] Dry and crush the extraction raw materials of the extract of Crithmum maritimum L., the extract of Osmanthus fragrans Lour., the extract of Hordeum vulgare L., and the extract of Sesamum indicum L. respectively, and pass through an 80-mesh sieve. Add an ethanol solution with a volume fraction of 50% to the sieved extraction raw materials and perform reflux extraction for 1.5 h, filter, and concentrate under reduced pressure at 45 °C to remove the solvent, and spray dry at 90 °C to obtain the extract of Crithmum maritimum L., the extract of Osmanthus fragrans Lour., the extract of Hordeum vulgare L., and the extract of Sesamum indicum L. respectively;

[0059] The extraction raw material of the Crithmum maritimum extract is the whole plant of Crithmum maritimum. The dosage ratio of the Crithmum maritimum extract to the ethanol solution is 1 g:15 mL. The extraction raw material of the osmanthus extract is the flower of osmanthus. The dosage ratio of the osmanthus extract to the ethanol solution is 1 g:11 mL. The extraction raw material of the barley extract is the malt of barley. The dosage ratio of the barley extract to the ethanol solution is 1 g:10 mL. The extraction raw material of the black sesame extract is the seed of sesame. The dosage ratio of the black sesame extract to the ethanol solution is 1 g:10 mL.

[0060] Extracts of Ulmus chlorocarpus Turcz. bark, Thymus vulgaris L. extract and spinach extract are prepared respectively. The preparation method includes the following steps:

[0061] The extraction raw materials of the Ulmus chlorocarpus Turcz. bark extract, Thymus vulgaris L. extract and spinach extract are dried, crushed and sieved through a 60-mesh sieve respectively. Deionized water is added to the sieved extraction raw materials and microwave extraction is carried out under temperature control to obtain an extract. The extract is centrifuged at a speed of 3550 r / min for 20 min to obtain residue A and filtrate A. Deionized water with the same material-liquid ratio is added to residue A and extraction, centrifugation and filtration are repeated to obtain residue B and filtrate B. Filtrate A and filtrate B are mixed evenly and concentrated to 7% of the total volume of filtrate A and filtrate B, and dried at 70 °C for 3 h to obtain the Ulmus chlorocarpus Turcz. bark extract, Thymus vulgaris L. extract and spinach extract respectively.

[0062] The extraction raw material of the Ulmus chlorocarpus Turcz. bark extract is the bark of Ulmus chlorocarpus Turcz. The extraction raw material of the Thymus vulgaris L. extract is the whole plant of Thymus vulgaris L. The extraction raw material of the spinach extract is the leaf and stem of spinach.

[0063] The dosage ratio of the Ulmus chlorocarpus Turcz. bark extract to deionized water is 1 g:18 mL. The temperature of microwave extraction of the Ulmus chlorocarpus Turcz. bark extract under temperature control is 63 °C, the power is 700 w, and the time is 8 min. The dosage ratio of the Thymus vulgaris L. extract to deionized water is 1 g:15 mL. The temperature of microwave extraction of the Thymus vulgaris L. extract under temperature control is 32 °C, the power is 260 w, and the time is 12 min. The dosage ratio of the spinach extract to deionized water is 1 g:10 mL. The temperature of microwave extraction of the spinach extract under temperature control is 25 °C, the power is 220 w, and the time is 10 min.

[0064] Example 4

[0065] A plant composition with the efficacy of whitening and removing freckles, the plant composition specifically includes the following raw materials in parts by weight:

[0066]

[0067] The preparation method of the plant composition with the efficacy of whitening and removing freckles specifically includes the following steps:

[0068] Mix the Crithmum maritimum extract, Osmanthus fragrans extract, Hordeum vulgare extract, Ulmus thomasii bark extract, Sesamum indicum extract, Thymus vulgaris extract and Spinacia oleracea extract prepared in Example 1 above evenly, and then add deionized water, control the temperature at 23°C and stir for 1.5 h to obtain the finished plant composition.

[0069] Example 5

[0070] A plant composition with the efficacy of whitening and removing freckles, the plant composition specifically includes the following raw materials in parts by weight:

[0071]

[0072] The preparation method of the plant composition with the efficacy of whitening and removing freckles specifically includes the following steps:

[0073] Mix the Crithmum maritimum extract, Osmanthus fragrans extract, Hordeum vulgare extract, Ulmus thomasii bark extract, Sesamum indicum extract, Thymus vulgaris extract and Spinacia oleracea extract prepared in Example 3 above evenly, and then add propylene glycol, control the temperature at 24°C and stir for 1 h to obtain the finished plant composition.

[0074] Example 6

[0075] A plant composition with the efficacy of whitening and removing freckles, the plant composition specifically includes the following raw materials in parts by weight:

[0076]

[0077]

[0078] The preparation method of the plant composition with the efficacy of whitening and removing freckles specifically includes the following steps:

[0079] Mix the Crithmum maritimum extract, Osmanthus fragrans extract, Hordeum vulgare extract, Ulmus thomasii bark extract, Sesamum indicum extract, Thymus vulgaris extract and Spinacia oleracea extract prepared in Example 2 above evenly, and then add 1,3-butanediol, control the temperature at 25°C and stir for 2 h to obtain the finished plant composition.

[0080] Comparative Example 1

[0081] Compared with Example 4, the difference is that in Comparative Example 1, the Crithmum maritimum extract prepared in Example 1 is not added, while the Osmanthus fragrans extract prepared in Example 1 is 12 parts by weight, and the Hordeum vulgare extract prepared in Example 1 is 11 parts by weight, and the remaining operation steps and parameters remain unchanged.

[0082] Comparative Example 2

[0083] Compared with Example 4, the difference is that in Comparative Example 2, the osmanthus extract prepared in Example 1 is not added, while the criste marine extract prepared in Example 1 is 21 parts by weight, and the barley extract prepared in Example 1 is 2 parts by weight, and the remaining operation steps and parameters remain unchanged.

[0084] Comparative Example 3

[0085] Compared with Example 4, the difference is that in Comparative Example 3, the barley extract prepared in Example 1 is not added, while the criste marine extract prepared in Example 1 is 20.5 parts by weight, and the osmanthus extract prepared in Example 1 is 2.5 parts by weight, and the remaining operation steps and parameters remain unchanged.

[0086] Comparative Example 4

[0087] Compared with Example 4, the difference is that in Comparative Example 4, the extract of ulmus pumila l. var. laevis w. c. cheng bark prepared in Example 1 is not added, while the black sesame extract prepared in Example 1 is 11.5 parts by weight, and the thymus vulgaris extract prepared in Example 1 is 3.5 parts by weight, and the remaining operation steps and parameters remain unchanged.

[0088] Comparative Example 5

[0089] Compared with Example 4, the difference is that in Comparative Example 5, the black sesame extract prepared in Example 1 is not added, while the extract of ulmus pumila l. var. laevis w. c. cheng prepared in Example 1 is 8 parts by weight, and the thymus vulgaris extract prepared in Example 1 is 7 parts by weight, and the remaining operation steps and parameters remain unchanged.

[0090] Comparative Example 6

[0091] Compared with Example 4, the difference is that in Comparative Example 6, the thymus vulgaris extract prepared in Example 1 is not added, while the extract of ulmus pumila l. var. laevis w. c. cheng prepared in Example 1 is 4 parts by weight, and the black sesame extract prepared in Example 1 is 11 parts by weight, and the remaining operation steps and parameters remain unchanged.

[0092] Comparative Example 7

[0093] Compared with Example 4, the difference is that in Comparative Example 7, the spinach extract prepared in Example 1 is not added, and the remaining operation steps and parameters remain unchanged.

[0094] Test Example 1

[0095] Whitening effect test:

[0096] The plant compositions prepared in Examples 4-6, Comparative Examples 1-3 and Comparative Example 7 were respectively added to the same type of cream with the same matrix at 5% of the total mass of the cream to prepare test samples. Volunteers aged 25-45 with healthy and undamaged skin, half male and half female, were randomly divided into 7 groups, with 12 people in each group, and the test samples were used respectively; the inner side of the left forearm of the volunteers in the 4 cm × 4 cm area was used as the test area to apply the test sample, and during the experiment, the volunteers did not apply any cosmetics to the test area. The usage method was to take 1 mg / cm 2 The test sample was evenly applied to the test area, and then gently massaged until absorbed, and used once in the morning and once in the evening every day for 28 days.

[0097] Before and after use, the test area was washed, and the melanin content of the skin in the test area was measured with a pigment test probe on the 0th day and 28th day after using the product, and measured three times, and the results were averaged;

[0098] The results are shown in Table 1.

[0099] Table 1

[0100]

[0101]

[0102] It can be seen from Comparative Examples 1-3 in Table 1 that the present invention combines extracts of Crithmum maritimum, Osmanthus fragrans and Hordeum vulgare to synergistically improve the whitening effect of the plant composition by starting from a triple whitening mechanism of inhibiting tyrosinase activity, inhibiting melanin formation caused by α-MSH, and inhibiting the activity of melanocytes; and it can be seen from Comparative Example 7 that the present invention uses spinach extract to play a role in promoting penetration, effectively assisting the other components in the system to further enhance the whitening efficacy of the system.

[0103] Test Example 2

[0104] Freckle removal effect test:

[0105] Volunteers aged 30-50 with dull complexions and a small number of spots on the facial skin, half male and half female, were randomly divided into 8 groups, with 12 people in each group, and the test samples were used respectively; the test samples used were the test samples prepared by adding the plant compositions prepared in Examples 4-6, Comparative Examples 4-6 and Comparative Example 7 and pure water to the same type of cream with the same matrix at 5% of the total mass of the cream respectively; the test sample prepared by adding pure water to the same type of cream with the same matrix was named the blank matrix sample. The right cheek area of the volunteers' faces was used as the test area to apply the test sample, and during the experiment, the volunteers did not apply any cosmetics to the test area. The usage method was to take 1 mg / cm 2The test sample was evenly applied to the test area and then gently massaged until absorbed, used once in the morning and once in the evening every day for 28 days. The modified melanosis area and severity index (mMASI) of the volunteers was detected before and after using the test product, and the data was recorded to calculate the average value of each group. The results are shown in Table 2.

[0106] Table 2

[0107]

[0108]

[0109] As can be seen from Comparative Examples 4-6 in Table 2, three anti-spot plant extracts are added to the formula of the present invention. The bark extract of Ulmus macrocarpa Hance var. glabra W. C. Cheng reduces age spots, the black sesame extract enhances the cell melanin metabolism ability, and the thymus extract stimulates the growth of new cells. The three make the plant composition prepared by the present invention achieve the synergistic effect of removing spots from three perspectives; and as can be seen from Comparative Example 7, the spinach extract added in the present invention can effectively assist the other components in the system to further enhance the spot-removing efficacy of the system.

[0110] In the description of the specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0111] The above content is only an example and illustration of the present invention. Those skilled in the art of the present technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the invention or exceed the scope defined by the claims of the present invention, they should fall within the protection scope of the present invention.

Claims

1. A plant composition with whitening and freckle removal effects, characterized in that: The plant composition specifically comprises the following raw materials in parts by weight: The plant composition further comprises 0.2-0.25 parts by weight of spinach extract.

2. The plant composition with whitening and freckle-removing effects according to claim 1, characterized in that: The plant composition further comprises 70-80 parts by weight of a solvent.

3. The plant composition with whitening and freckle removing effect according to claim 2, characterized in that: The solvent includes any one of deionized water, propylene glycol and 1,3-butylene glycol.

4. The plant composition with whitening and freckle removing effect according to claim 1, characterized in that: The preparation method of the sea fennel extract, osmanthus extract, barley extract and black sesame extract comprises the following steps: The extraction raw materials of sea fennel extract, osmanthus extract, barley extract and black sesame extract are dried, crushed and sieved respectively, and an extraction solvent is added to the sieved extraction raw materials for reflux extraction, filtering, temperature-controlled reduced pressure concentration to remove the solvent, and spray drying to obtain sea fennel extract, osmanthus extract, barley extract and black sesame extract.

5. The plant composition with whitening and freckle removing effect according to claim 1, characterized in that: The preparation method of the elm bark extract, thyme extract and spinach extract comprises the following steps: The extraction raw materials of the elm bark extract, thyme extract and spinach extract are dried, crushed and sieved respectively, an extraction solvent is added to the sieved extraction raw materials, and microwave extraction is performed under controlled temperature to obtain an extract, the extract is centrifuged and filtered to obtain a filter residue A and a filtrate A, an extraction solvent with the same material-liquid ratio is added to the filter residue A, and extraction, centrifugation and filtration are repeated to obtain a filter residue B and a filtrate B, the filtrate A and the filtrate B are evenly mixed and concentrated, and dried under controlled temperature to obtain the elm bark extract, thyme extract and spinach extract.

6. The plant composition with whitening and freckle-removing effects according to claim 2, characterized in that: The method for preparing the plant composition having whitening and freckle-removing effects specifically comprises the following steps: The sea fennel extract, osmanthus extract, barley extract, elm bark extract, black sesame extract, thyme extract and spinach extract are uniformly mixed, and then a solvent is added and the mixture is stirred under controlled temperature to obtain a finished plant composition.

7. Use of the plant composition with whitening and freckle removal effect as claimed in any one of claims 2 to 6 in the preparation of skin care products, characterized in that: The plant composition is added into the skin care product at a mass percentage of 3-5%.

8. Use of the plant composition with whitening and freckle removal effects according to claim 7 in the preparation of skin care products, characterized in that: The skin care products include toners, essences, creams and masks.

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