CN106726681B - A method of mask sheet is prepared with sericin - Google Patents
A method of mask sheet is prepared with sericin Download PDFInfo
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- CN106726681B CN106726681B CN201611159827.2A CN201611159827A CN106726681B CN 106726681 B CN106726681 B CN 106726681B CN 201611159827 A CN201611159827 A CN 201611159827A CN 106726681 B CN106726681 B CN 106726681B
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- sericin
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- 108010013296 Sericins Proteins 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001815 facial effect Effects 0.000 claims abstract description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 10
- 229920001817 Agar Polymers 0.000 claims abstract description 8
- 239000008272 agar Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000004090 dissolution Methods 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 108010022355 Fibroins Proteins 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 241000255794 Bombyx mandarina Species 0.000 claims description 2
- 241000255789 Bombyx mori Species 0.000 claims description 2
- 210000001061 forehead Anatomy 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 239000012460 protein solution Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000003020 moisturizing effect Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002087 whitening effect Effects 0.000 abstract description 4
- 230000003712 anti-aging effect Effects 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 210000003491 skin Anatomy 0.000 description 12
- 239000000499 gel Substances 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 235000019441 ethanol Nutrition 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000001413 amino acids Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- DWNBOPVKNPVNQG-LURJTMIESA-N (2s)-4-hydroxy-2-(propylamino)butanoic acid Chemical compound CCCN[C@H](C(O)=O)CCO DWNBOPVKNPVNQG-LURJTMIESA-N 0.000 description 2
- 206010020649 Hyperkeratosis Diseases 0.000 description 2
- 208000001126 Keratosis Diseases 0.000 description 2
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 description 2
- COLNVLDHVKWLRT-QMMMGPOBSA-N L-phenylalanine Chemical compound OC(=O)[C@@H](N)CC1=CC=CC=C1 COLNVLDHVKWLRT-QMMMGPOBSA-N 0.000 description 2
- OUYCCCASQSFEME-QMMMGPOBSA-N L-tyrosine Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-QMMMGPOBSA-N 0.000 description 2
- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000002242 deionisation method Methods 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- 102000003425 Tyrosinase Human genes 0.000 description 1
- 108060008724 Tyrosinase Proteins 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000019522 cellular metabolic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 210000001339 epidermal cell Anatomy 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- COLNVLDHVKWLRT-UHFFFAOYSA-N phenylalanine Natural products OC(=O)C(N)CC1=CC=CC=C1 COLNVLDHVKWLRT-UHFFFAOYSA-N 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000000106 sweat gland Anatomy 0.000 description 1
- OUYCCCASQSFEME-UHFFFAOYSA-N tyrosine Natural products OC(=O)C(N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/64—Proteins; Peptides; Derivatives or degradation products thereof
- A61K8/65—Collagen; Gelatin; Keratin; Derivatives or degradation products thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0212—Face masks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/08—Anti-ageing preparations
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Dermatology (AREA)
- Gerontology & Geriatric Medicine (AREA)
- Cosmetics (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
The invention discloses a kind of methods for preparing mask sheet with sericin, the sericin solution for being 2%-5% including compound concentration, the agar powder of 0.5%-3% is added in sericin solution, after heating stirring to uniform dissolution, it is injected into facial mask mold, drying forms sericin facial mask, 10h-15h is impregnated in the ethanol solution of 50%-80% concentration, the present invention has energy consumption low in entire treatment process, biological safety is high, it is cheap, it is simple to operate, the advantages such as no pollution to the environment, the sericin facial mask as made from the invention has whitening, moisturizing, the biological characteristics of anti-aging and frivolous transparent physical property, the sericin facial mask as made from the invention, it is more flexible in use, it can need to select the facial mask of different parts according to individual difference Patch uses.
Description
Technical field
The present invention relates to a kind of methods for preparing mask sheet with sericin, belong to the processing method of sericin.
Background technique
Silk gum is a kind of globular preteins, and relative molecular mass is 1.4~31.4 ten thousand, is made of 18 kinds of amino acid, wherein silk
Propylhomoserin (Ser), asparatate (Asp) and glycine (Gly) content are higher, relative mass respectively reaches 33.43%,
16.71% and 13.49%.The secondary structure of silk gum is conceived based on no crimpiness containing part β, and α spiral knot is practically free of
Structure.Silk gum amino acid composition in, polar side chains account for 74.61%, these be located at the side chain on sericin chain compared with
Long amino acid and polar hydrophilic group is in polypeptide surface, can make the moisture in structure be transmitted to keratoderma and and its
In conjunction with absorption of the skin to moisture can be promoted.Silk gum soluble in water is placed under field conditions (factors), can be obtained reversible
Sericin gel.Temperature from liquid glue to gel conversion generally at 60 DEG C or less, the temperature that gel is converted to liquid glue is 50~70 DEG C.In
Liquid glue is to the irreversible conversion during gel conversion, along with part random coil to β conformation.The intensity and gel of gel
Concentration it is directly proportional.Silk gum aqueous solution and other materials are mixed and made into hybrid films, the physicochemical property of film can then be improved.
Facial mask be apply or spread on human skin surface, take off after a period of time from, clean or retain, can play concentration shield
The product of reason or cleaning action.The principle of facial mask is temporarily isolating extraneous air exactly using the of short duration time for being covered on face
With pollution, skin temperature is improved, the pore expansion of skin promotes sweat gland secretion and metabolism, increase the oxygen content of skin,
Be conducive to skin and exclude the product of epidermal cell metabolism and the oil substances of accumulation, the moisture in facial mask penetrates into epidermis
Cuticula, skin become soft, and skin is naturally bright flexible.According to the material of facial mask, powder reconciliation facial mask, height can be classified as
Ridge soil facial mask, non-woven fabrics facial mask and silk mask.Due to silk mask using it is rear directly take off from, no longer need to cleaning face,
So its favor by the majority of consumers.
There is good hygroscopicity using facial mask made of this method sericin, keratoderma can be functioned similarly to
The effect of middle natural moisturizing factor (Natural moisturizing factor, NMF), prevents skin from wrinkling.And has and inhibit
The characteristic of tyrosinase activity can prevent the formation of melanin in skin, skin whitening.And tyrosine (Tyr), color in silk gum
Propylhomoserin (Trp), phenylalanine (Phe) etc. can effectively absorb ultraviolet light, effectively prevent injury of the solar ultraviolet to skin, reduce
Color spot occurs.
Summary of the invention
The present invention is exactly the characteristic for being directed to sericin and the vacancy field of existing silk mask, has developed a kind of technique
Simply, processing is convenient and has the function of the method for whitening, moisturizing, the sericin mask sheet preparation of anti-aging.
To achieve the goals above, the specific technical solution of the present invention is as follows:
The invention discloses a kind of methods for preparing mask sheet with sericin, and specific preparation process is as follows:
1) compound concentration is the sericin solution of 2%-5%；
2) the agar powder of 0.5%-3% is added in sericin solution, after heating stirring to uniform dissolution, injection
Into facial mask mold；
3) drying forms sericin facial mask, impregnates 10h-15h in the ethanol solution of 50%-80% concentration；Work as the time
When too short, facial mask does not have completion of cure, can still be dissolved in water；When overlong time, time cost is increased；When concentration is too low
When, product solidification not exclusively, it is soluble to meet the water capacity；When the concentration is too high, the easy dehydration of product causes more crisp frangible, under complete performance
Drop also results in the waste of ethyl alcohol, increases cost.
4) after deionized water cleaning, 1h-4h is impregnated in the fibroin solutions of 0.5%-3%, that is, can be used.Work as the time
When too short, fibroin content is inadequate in facial mask, performance of keeping humidity decline；When overlong time, time cost is increased, is also easy
Breed bacterium.When fibroin solutions concentration is too low, fibroin content is not high, influences using effect；When fibroin is dense
When spending high, since facial mask adsorbance is limited, service efficiency is reduced, improves cost.
As a further improvement, sericin solution of the present invention be freshly prepared sericin solution or
It is dissolved and is prepared using sericin powder, if preparation method is according to 1:20-1 using freshly prepared sericin solution:
40 bath raio extracts sericin solution, carries out dialysis purification；When bath raio is too small, the sericin concentration extracted is too low,
Cause water, heat and waste of time, economic benefit decline；When bath raio is excessively high, sericin extraction not exclusively causes to waste.
As a further improvement, sericin of the present invention is silkworm sericin or wild silkworm sericin.
As a further improvement, facial mask mold of the present invention includes monoblock type facial mask and partition type facial mask, segmentation
Formula mask sheet is that forehead pastes, eye sticker, nose patch, face patch, any one in lower jaw patch.
As a further improvement, agar concentration of the present invention is 0.5%-3%.When the concentration is too low, product is thick
Spend thin, poor mechanical property；When the concentration is too high, product thickness is blocked up, permeability decline, and is easy to happen in injection molding solidifying
Glue is not easy to form complete uniform facial mask.
As a further improvement, immersion fibroin solutions of the present invention are sericin solution or fibroin albumen
Solution.
As a further improvement, drying of the present invention is that natural air drying or machine are dried.
Compared with prior art, the present invention has following prominent characteristics:
(1) present invention has low, the biological safety height that consumes energy, cheap, side easy to operate in entire treatment process
Just, the advantages such as no pollution to the environment.
(2) the sericin facial mask as made from the invention has whitening, moisturizing, the biological characteristics of anti-aging and frivolous
Transparent physical property.
(3) the sericin facial mask as made from the invention, exclusive use can reach target property.
(4) the sericin facial mask as made from the invention can have heterogeneity according to the different demand cooperation of individual
Fibroin Essence use.
(5) the sericin facial mask as made from the invention, to nutrient solution absorption and absorption property on have it is bigger
Advantage.
(6) whole preparation process is completed in aqueous solution, and reaction condition is mild, is avoided and is made using organic solvent to environment
At pollution, operating procedure is simple.
(7) the sericin facial mask as made from the invention, is more flexible in use, can be according to individual different needs
The mask sheet of different parts is selected to use.
Specific embodiment
Technical solution of the present invention is further described below by specific embodiment:
The present invention is mainly implemented by following scheme:
Agar is dissolved in a certain amount of sericin solution, a certain concentration is made into, heating and being stirred continuously keeps it mixed
It closes uniform.It takes a certain amount of solution to pour into mask sheet mold to be film-made.
Technical solution of the present invention is described in further detail below by specific embodiment, following embodiment is pair
Explanation of the invention and the invention is not limited to following embodiments.
Embodiment 1
By 10g dry silk cocoon, heat together 30min, filtering are taken in 200ml, 300ml, 400ml deionization boiling water respectively
3.0g agar powder is added in 150ml, dissolves by heating, and pours into 10 nose mold tools while hot.Natural air drying for 24 hours after, 50% ethanol postincubation
10h；It is soaked in 0.5% sericin solution after deionized water cleaning, is taken out after 1h.
Embodiment 2
The silk cocoon that 10g is dried heat together 30min in 300ml deionization boiling water takes 300ml dialysis to purify resulting solution
6 parts are equally divided into, 0.25g, 0.5g, 0.75g, 1.0g, 1.25g, 1.5g agar powder are separately added into, dissolves by heating, pours into 6 while hot
A complete type facial mask.Natural air drying for 24 hours after, 70% ethanol postincubation 12h；3% sericin is soaked in after deionized water cleaning
In solution, taken out after 2h.
Embodiment 3
1.5g sericin powder is dissolved in 100mL deionized water, 0.5g agar powder is added, is dissolved by heating, while hot
Pour into 5 lower jaw mold tools.In baking oven after dry 6h, 75% ethanol postincubation 15h；2% silk is soaked in after deionized water cleaning
In fibroin solution, taken out after 4h.
Finally, it should also be noted that it is listed above be only several specific embodiments of the invention.Obviously, of the invention
Above embodiments are not limited to, acceptable there are many deformations.Those skilled in the art can be straight from present disclosure
All deformations for connecing export or associating, are considered as protection scope of the present invention.
Claims (6)
1. a kind of method for preparing mask sheet with sericin, which is characterized in that specific preparation process is as follows:
1) compound concentration is the sericin solution of 2%-5%；
2) the agar powder of 0.5%-3% is added in sericin solution, after heating stirring to uniform dissolution, is injected into facial mask mould
In tool；
3) drying forms sericin facial mask, impregnates 10h-15h in the ethanol solution of 50%-80% concentration；
4) after deionized water cleaning, 1h-4h is impregnated in the fibroin solutions of 0.5%-3%, that is, can be used；
The sericin solution manufacturing method has dissolution sericin powder and fresh extractor sericin solution, fresh to mention
The method for taking sericin solution is to extract sericin solution according to the bath raio deionized water of 1:20-1:40, is dialysed
Purification.
2. the method according to claim 1 for preparing mask sheet with sericin, which is characterized in that the sericin
For silkworm sericin or wild silkworm sericin.
3. the method according to claim 1 for preparing mask sheet with sericin, which is characterized in that the facial mask mold
Including complete formula mask sheet and partition type mask sheet.
4. the method according to claim 3 for preparing mask sheet with sericin, which is characterized in that the partition type face
Film patch be lower jaw patch, nose patch, eye sticker, forehead paste in any one.
5. the method according to claim 1 for preparing mask sheet with sericin, which is characterized in that the drying means
It is dried for natural air drying and machine.
6. the method according to claim 1 for preparing mask sheet with sericin, which is characterized in that the immersion silk
Protein solution is sericin solution or silk fibroin protein solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611159827.2A CN106726681B (en) | 2016-12-15 | 2016-12-15 | A method of mask sheet is prepared with sericin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611159827.2A CN106726681B (en) | 2016-12-15 | 2016-12-15 | A method of mask sheet is prepared with sericin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106726681A CN106726681A (en) | 2017-05-31 |
| CN106726681B true CN106726681B (en) | 2019-11-12 |
Family
ID=58889167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201611159827.2A Active CN106726681B (en) | 2016-12-15 | 2016-12-15 | A method of mask sheet is prepared with sericin |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280996B (en) * | 2017-08-24 | 2018-03-20 | 郭志军 | A kind of face mask of traditional Chinese medicine and preparation method thereof and application method |
| CN108149387A (en) * | 2018-01-17 | 2018-06-12 | 青岛大学 | A kind of hydrogel filament mask substrate |
| CN111437213B (en) * | 2020-04-24 | 2023-06-02 | 中科国思生物科技研究（广州）有限公司 | Active silk collagen-based non-cloth skin care mask and preparation method thereof |
| CN113265768B (en) * | 2021-06-10 | 2022-03-22 | 盐城工业职业技术学院 | Method for producing flat silk surface membrane material from whole silk glue silkworm and common castor silkworm |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001129371A (en) * | 1999-11-09 | 2001-05-15 | Ube Ind Ltd | Membrane comprising mixture containing sericin, and compound containing agar and/or agarose and its manufacturing method |
| WO2008072817A1 (en) * | 2006-12-14 | 2008-06-19 | Fineco Ltd. | Hydrogel mask pack, method of preparing the same, and related composition |
| CN103462867A (en) * | 2013-09-05 | 2013-12-25 | 浙江大学 | Preparation method of silk glue/trehalose skin-care facial mask |
-
2016
- 2016-12-15 CN CN201611159827.2A patent/CN106726681B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001129371A (en) * | 1999-11-09 | 2001-05-15 | Ube Ind Ltd | Membrane comprising mixture containing sericin, and compound containing agar and/or agarose and its manufacturing method |
| WO2008072817A1 (en) * | 2006-12-14 | 2008-06-19 | Fineco Ltd. | Hydrogel mask pack, method of preparing the same, and related composition |
| CN103462867A (en) * | 2013-09-05 | 2013-12-25 | 浙江大学 | Preparation method of silk glue/trehalose skin-care facial mask |
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Effective date of registration: 20240320 Address after: Room 1127, Building A, Ruibo International, No. 673 Gudun Road, Xihu District, Hangzhou City, Zhejiang Province, 310058 Patentee after: Hangzhou Sihan Biotechnology Co.,Ltd. Country or region after: Zhong Guo Address before: 310058 Yuhang Tang Road, Xihu District, Hangzhou, Zhejiang 866 Patentee before: ZHEJIANG University Country or region before: Zhong Guo |