Silk Amino Acids
Definition of the Product:
Water-soluble mixed amino acids, also called Fibroin-90, whose average molecular weight is about 90, which is acquired after the hydrolysis of silk fibroin. White or creamy white powder, or faint yellow transparent liquid, the ninhydrin reaction is positive.
Main Index:
| Project | Silk Amino Acids Powder | Silk Amino Acid Liquid |
| Characters | Creamy white powder, easily dissolving in water and has sweet taste | faint yellow transparent liquid, with sweet taste |
| Identify | Ninhydrin reaction is positive | Ninhydrin reaction is positive |
| Total Nitrogen (%) | ≥15 | ≥3 |
| Drying Shrinkage (%) | ≤4 | |
| Residue on Ignition (%) | ≤3 | ≤1 |
| Solid Content (%) | 20% | |
| PH Value | 4.5.0-6.5 | 4.5.0-6.5 |
| Total Content of Glycine, L-Alanine, L-Serine (%) | ≥83 | ≥83 |
| Heavy Metal (recorded with pb) /(mg/kg) | ≤5 | ≤1 |
| Arsenic (mg/kg) | ≤0.5 | ≤0.1 |
| Total Bacterial Count (CFU/g) | ≤100 | ≤1000 |
| Coliform (MPN) (entity/100g) | ≤30 | ≤30 |
| Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus) | Not Detectable | Not Detectable |
Application Characteristics:
(1)Mixed amino acids, a kind of highly practical nutrient substance with higher nutritive value, is produced through biochemistry technology which adopts the raw material of mulberry silk in which alanine, serine and glycine account for more than 83%.
(2)Glycine and Serine of silk essence are raw materials to synthesize protein in organisms, and are also precursors for synthesis of glutathione, which has a preventive effect on cardiovascular diseases, cancer and aging; Glycine also has an antidotal action on the detoxication of aromatic compounds which can cause cancer; alanine promotes the alcohol metabolism, protects the liver and prevents people from being drunk; tyrosine has a good effect on preventing senile dementia.
(3)Silk essence can easily impenetrate into the dermis layer of skin, be quickly absorbed by the skin, and takes part in enzyme activities, which obtains the actions of humidity, moisturizing, UV radiation, inhibiting melanin production, preventing skin aging and nourishing the skin.
Silk Peptide Powder
Definition of the Product:
Silk peptide is a kind of water-soluble polypeptide substance by the degradation of silk fibroin protein, whose molecular weight is between 500 and 10000, which is white powder with good water-solubility, the ninhydrin reaction is positive.
Main Index:
| Project | Silk Peptide Powder | Silk Peptide Liquid |
| Characters | White powder, easy deliquescence | Light yellow liquid, no abnormal flavor |
| Identify | Ninhydrin reaction is positive | Ninhydrin reaction is positive |
| Total Nitrogen (%) | ≥14.5 | ≥2.9 |
| Loss on Drying (%) | 5.0 | |
| Residue on Ignition (%) | 3.0 | 1.0 |
| Solid Content (%) | 20 | |
| PH Value | 4.5.0-6.5 | 3.0-7.0 |
| Average Molecular Weight (Da) | 500-30000 | 500-10000 |
| Lead (mg/kg) | ≤5 | ≤1 |
| Arsenic (mg/kg) | ≤ 1 | ≤0.5 |
| Mercury (mg/kg) | ≤0.1 | |
| Total Bacterial Count (CFU/g) | ≤1000 | ≤1000 |
| Coliform (MPN/100g) | ≤90 | ≤90 |
| Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus) | Not Detectable | Not Detectable |
Application Characteristics:
(1)It has actions of natural moisturizing, nourishing skin and promoting skin wound healing.
As clinically proven, silk peptide has good curative effects on skin wrinkle, dermatitis, pruritus, and eliminating chloasma. The silk peptide is non-irritant and can accelerate the wound healing. Silk peptide can also prevent the skin from the erosion and damage of the chemicals such as dust, coating, acid and alkali. Therefore, frequent daubing skin with skin care products which are rich in silk peptide can achieve the cosmetic effect and prevent a wide range of skin diseases.
(2)Extremely Outstanding Hair Care Function
The hair care function of silk peptide is mainly reflected in the absorptivity, absorbability, film-forming property, humidifying and moisture retention to hair.
Compared with other protein hydrolysate (collagen, collagen protein, gelatin protein, etc.), the greatest feature of silk peptide is that it is rich in nutrition and can be easily assimilated into the hair. The absorption of silk peptide to skin and hair mainly depends on permeation. The increase of silk peptide concentration will enhance the absorptive amount to silk peptide by hair correspondingly. As for the damaged hair, it has larger absorbed dose and adsorbing capacity, which in turn silk peptide has a more obvious repair and protection effect on hair.
The silk peptide of which the molecular weight is between 500 and 2,000 has wonderful film-forming property on hair, and the film has a unique luster, while the hair feels good and elastic. X-ray diffraction method shows that the membrane formed with silk peptide is the β type crystallization, and the membrane formed with silk peptide on hair can increase the elasticity and luster of hair. Meanwhile, it can also be used as the hairspray. Comparing the silk peptide with PVP, collagen peptides, starchy solution, under the damp condition of 80% RH, using silk peptide as hairspray can keep hair in good condition for a long time.
After losing certain amount of water, the hair will be dry, vulnerable to breaking and coming off and has split ends at the same time. The membranes formed by silk peptide on the hair surface can prevent water from excessive evaporation. As a natural moisturizing factor, it can also adjust the moisture of little space on the hair surface, making the hair soft and smooth.
Silk Fibroin Powder
Product Definition:
Silk powder (silk fibrin powder) is a kind of macromolecular silk fibrin in powder form, which is made from the silk fibrin degummed under high pressure, requires special craft processing and smash through physical methods. Its molecular weight of is about 250000. It is tasteless, odorless, slightly soluble in water and insoluble in alcohol ether.
Description:
| Items | Specification |
| Coarse silk powder | Average particle size: 40 micron |
| Superfine Silk Powder | Average particle size: 10 Microns |
| Superfine Silk Powder | Mean particle diameter: 5 micrometers |
| Ultrafine and ultra-micro silk powder | Mean particle diameter: 2 micrometers |
| Nanometer silk powder | Mean particle diameter: 350 nanometers |
Key indicators:
| Items | Indicators |
| Characters | White or slight grayish yellow powders |
| Total Nitrogen (%) | ≥14.5 |
| Weight loss on drying (%) | ≤6.0 |
| Residue on ignition (%) | ≤4.0 |
| PH value | 5.0-7.0 |
Application characteristics:
(1)The silk powder is an excellent natural moisturizing factor because of the presence of hydrophilic gene in the structure of silk. It can attach a very thin silk powder layer to the surface of skin, which can absorb or release water with the change of the temperature and humidity of skin. This has certain preventive and therapeutic effects on skin protection, preventing and curing various skin diseases caused by moisture and drying.
(2)The crystalline structure of silk powder can reflect part of ultraviolet ray, and the hollows formed by the spiral structure can again absorb part of ultraviolet ray, so it will make the better sun-screening effect by using the compound of silk powder and sun-screening agent in sunscreen products.
(3) Silk powder has a unique ability of keeping the oil, which makes it more suitable to be used in cosmetics for oily skin.
(4)The structural features of silk powder can help reduce the reflected light. When being used in cosmetics in which the mica powder is taken as substrate, it can reduce the reflected light and make the skin show vivid and soft colors naturally. Compared with talcum powder and titanium dioxide, silk powder has excellent air permeability, users would feel particularly smooth after applying cosmetics containing silk powder.
Sericin Powder
Product Definition:
Sericin powder is the colloid protein wrapping in the outer layer of silk. It is a kind of yellowish powder and is soluble in water, whose ninhydrin reaction is positive.
Main Indicators:
| Items | Indicators |
| Characters | White to light yellow powder, easy deliquescence. Soluble in water. |
| Total Nitrogen (%) | ≥14 |
| The Percentage of Polarized Side Amino Acids in the Total Quantity of Amino Acids (%) | ＞70 |
| Loss on Drying (%) | 5.0 |
| Residue on Ignition | 4.0 |
| PH Value | 5.0-7.0 |
| Heavy Metal (Pb)/(mg/kg) | ≤5 |
| Arsenic (mg/kg) | ≤0.5 |
| Total Bacterial Count (CFU/g) | ≤3000 |
| Coliform (MPN/100g) | ≤90 |
| Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus) | Not Detectable |
Application characteristics:
(1)Sericin is rich of amino acids with polar pendant groups, such as serine and asparaginic acid. It is a kind of protein with abundant hydrophilic groups. Because amino acid with hydrophilic polarity accounts for about 75% in sericin, especially serine which takes up about 30% of sericin, whose hygroscopicify is 50 times stronger than glycerol. Thus, sericin, is highly effective in moisture absorption, moisture, breathable function and antimicrobial function when used as raw material of cosmetic and chemical fiber lay material.
(2)The film-forming property of silk glue on hair is excellent and the membrane is glossy, while the hair feels good and elastic. It can not only avoid the direct contact between hair and chemicals that can damage hair, and it can also increase the elasticity and gloss of hair. Sericin can form the membranes with certain strength on the hair surface, which can be used as the hairspray.
(3)Sericin has an excellent inoxidizability. It can effectively inhibit the polyphenol oxidase activity in food and is an excellent natural antioxidant for fat food, which has very prominent value in developing the additive to extend the refreshing time of dairy foods.
(4)Using sericin protein as main raw material, then coating on the fiber, underwear, bedding, close skin and leather products through the cross-linking agent, achieving the silky effects like skin caring, being friendly to skin, antibacterial, comfortable, etc.
Silkworm Chrysalis Amino Acids
Product Definition:
Taking degreased silkworm chrysalis as raw materials, water-solubility compound amino acids can be gained through hydrolyzation. Its color is faint yellow, and the ninhydrin reaction is positive.
Main Index:
| Items | Indicators |
| Characters | Power with the color from light yellow to claybank; the peculiar smell of amino acids; easy deliquescence |
| Total nitrogen (g/100g) | ≥12.8 |
| Amino acid content (g/100g) | ≥60 |
| Weight loss on drying (%) | 6.0 |
| Residue on ignition (%) | 5.0 |
| PH Value | 5.0-7.0 |
| Total Arsenic (count by As) (mg/kg) | ≤0.5 |
| Plumbum (Pb)/mg/kg) | ≤1.0 |
| Total Bacterial Count (CFU/g) | ≤3000 |
| ≤90 | |
| Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus) | Not Detectable |
Application characteristics:
(1)The content of free L-type amino acid is high, which accounts for more than 70% of the total amount. The total content of the free essential amino acid account for 35%.
(2)Silkworm chrysalis protein is a complete protein, so it has a wide range of amino acids, with eight kinds of essential amino acids balanced whose proportion is appropriate and in line with the model of the United Nations Food and Agriculture Organization and World Health Organization (FAO/WHO). The silkworm chrysalis protein contains rich major and minor elements, among which the content of zinc is up to 19.025mg/100g.
(3)It has good water-solubility and its aqueous solution has good transparency; This product is widely used in nutritional and health-care food (amino acid oral liquid, amino acid buffers, amino acid capsules, fruity amino acid drinks and concentrated drinks, energized drinks for special types of work, nutritive wine, food for the aged and children and so on); used in candies, cakes, fortifier foods, various dried gravy noodles and condiments (sauces, soy sauce, vinegar and a variety of soups); It can be also used as the basic raw materials for medical amino acids and separation and purification of various single amino acids.
Silkworm Chrysalis Protein Powder
Product Definition:
Taking degreased silkworm chrysalis as the raw material, micro-solubility protein and polypeptide can be gained through hydrolysis. The color is faint yellow, and the ninhydrin reaction is positive.
Main Index:
| Items | Indicators |
| Characters | Power with the color from light yellow to claybank; the peculiar smell of amino acids; easy deliquescence |
| Protein (%) | ≥12.8 |
| Weight loss on drying (%) | 6.0 |
| Residue on ignition (%) | |
| PH Value | 5.0-7.0 |
| Total Arsenic (count by As) (mg/kg) | ≤0.5 |
| Plumbum (Pb)/mg/kg) | ≤1.0 |
| Total Bacterial Count (CFU/g) | ≤3000 |
| ≤90 | |
| Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus) | Not Detectable |
Application characteristics:
(1)The contents of protein and polypeptide are high, whose total amount are above 75%.
(2)Silkworm chrysalis protein is a complete protein, so it has a wide range of amino acids, with eight kinds of essential amino acids balanced whose proportion is appropriate and in line with the model of the United Nations Food and Agriculture Organization and World Health Organization (FAO/WHO).The silkworm chrysalis protein contains rich major and minor elements, among which the content of zinc is up to 19.025mg/100g.
(3)This product has high nutritive value, which can be widely applied to nutritional health food products (electuary, capsule, nutritive wine, food for old men, baby food, etc.); used in candies, cakes, fortifier foods, various dried gravy noodles and condiments (sauces, soy sauce, vinegar and a variety of soups); It can be also used as the basic raw materials for medical protein, polypeptide, separating and purifying various single amino acids.
Silk Skin-Friendly Products
Natural polymer fibroin and polypeptide active factor and appropriate humanization design are the creation of skin products of “Silk Story”.
The series of “Silk Story” mainly contain these skin-friendly products: sanitary napkins, diapers, dry face membranes and mattresses.
The skin-friendly sanitary products, which is full of silk protein active factor, have these remarkable advantages:
(1)Moisturizing Skin. Silk protein combines with cells through skins, and is absorbed by cells as nutrition, which can promote cell metabolism and make the skins plump and whippy.
(2)Humidifying Function. Silk protein contains abundant hydrophilic group and is the fine natural moisturizing factor. At the same time, the heliciform structure cavity of silk protein can absorb or liberate moisture with the change of body temperature, then keep the balance of skin moisture. It can also effectively prevent and cure skin diseases, such as pruritus, eczema and pityriasis simplex, etc. caused by moisture or drying.
(3)Comfortable and smooth. Silk protein is very similar to the polyclonal keratin of human skins, and both of them have good affinity. You can feel obviously comfortable and smooth and there’s no hypersensitivity.
XI’AN AOGU BIOTECH CO.,LTD is devoted into the research and innovation in natural nutritional supplements ingredients. Our own factory and lab with the strict quality control system to ensure quality stability and real price of silk extract. At the same time, we have our own source for the raw material to make sure the production ability.