absorbablegelatinsponge
Gelatin
CAS: 9000-70-8
Molecular Formula: C6H12O6
absorbablegelatinsponge - Names and Identifiers
absorbablegelatinsponge - Physico-chemical Properties
| Molecular Formula | C6H12O6 |
| Molar Mass | 10000 |
| Density | 1.2 |
| Melting Point | >226°C (dec.) |
| Water Solubility | SOLUBLE IN HOT WATER |
| Solubility | H2O: 67mg/mL at50°C, slightly hazy, slightly yellow |
| Appearance | powder |
| Color | Pale yellow to beige |
| Odor | Musty odour |
| Merck | 13,4393 |
| pKa | pKa 3.7to4.5(H2O t=25 I=0.00 N2atmosphere) (Uncertain) |
| PH | 4.0-6.0 (25℃, 67mg/mL in H2O) |
| Storage Condition | 2-8°C |
| Stability | Stable. Hygroscopic. Incompatible with strong oxidizing agents. |
| Physical and Chemical Properties | White, light yellow or yellow transparent or translucent shiny friable flakes or granules. Almost odorless and tasteless. Insoluble in cold water, can absorb 5~10 times the weight of water and swelling softening, soluble in hot water, cold gel, insoluble in ethanol, ether, chloroform and other solvents, soluble in acetic acid, glycerol in aqueous solution. 10% to 15% of the solution forms a gel. |
| Use | Is a hydrophilic colloid, protective colloid, can be used as a stabilizer of hydrophobic colloid, emulsifier. It is an amphoteric electrolyte, which can agglomerate charged particles into blocks in water, and thus can be used as a clarifier for alcohol and alcohol. As a dispersant, adhesive, thickener, stabilizer, emulsifier is widely used in photosensitive materials, pharmaceutical, food, paper, printing, textile, printing and dyeing, electroplating, cosmetics, bacterial culture, pesticide plus? |
absorbablegelatinsponge - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S24/25 - Avoid contact with skin and eyes. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S27 - Take off immediately all contaminated clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| RTECS | LX8580000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 35030010 |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg |
absorbablegelatinsponge - Reference
| Reference Show more | 1. Yan eryun, Zhang zouyuan, an Qinglong, etc. Preparation and characterization of Gelatin/PVA composite films [J]. Journal of Qiqihar University (Natural Science Edition) 2020 v.36(02):55-57 62. 2. Zhen Hui, Xiang Shuangyun, Yang Jian-Jian, etc. Study on microencapsulation of sodium alginate of lactic acid bacteria from chicken [J]. Feed Research, 2018, 000(003):64-66. 3. Chen Jiangfeng, Zhao Jiwei, Xiao Huichang, et al. Effects of adding different coagulants to artificial feed on growth and development of Rhododendron decidua [J]. Gansu Agricultural Science and Technology 2020 No.529(01):18-22. 4. Li Zhiming, Zhou Chenglin, Zhong Rui, etc. Preparation and properties of gelatin-based antibacterial films [J]. Agricultural products processing, 2020, No.503(09):10-12. 5. Sun Shuwen, Meng Qingxin, Yan Bo, Yang Yang, Zhang Jia Qi, Zhi Si Jia, Yu ni na. Preparation of Prunella vulgaris gel [J]. Modern Agricultural Science and Technology, 2020(15):230-231 233. 6. [IF = 7.514] Gang You et al."Elucidation of interactions between gelatin aggregates and hsian-tsao gum in aqueous solutions."Food Chem. 2020 Jul;319:126532 7. [IF=6.953] Xiuxiu Li et al."Gelatin films incorporated with thymol nanoemulsions: Physical properties and antimicrobial activities."Int J Biol Macromol. 2020 May;150:161 8. [IF=9.147] Qais Ali Al-Maqtari et al."Fabrication and characterization of chitosan/gelatin films loaded with microcapsules of Pulicaria jaubertii extract."Food Hydrocolloid. 2022 Aug;129:107624 9. [IF=7.514] Shijie Cen et al."Phosphorylation modification on functional and structural properties of fish gelatin: The effects of phosphate contents."Food Chem. 2022 Jun;380:132209 10. [IF=9.147] Jin Wang et al."Pickering emulsions by regulating the molecular interactions between gelatin and catechin for improving the interfacial and antioxidant properties."Food Hydrocolloid. 2022 May;126:107425 |
absorbablegelatinsponge - Nature
Open Data Verified Data
gelatin is a natural protein, which is composed of various amino acids and has a complex molecular structure. Industrial gelatin is colorless to light yellow transparent or translucent thin or powder. Odorless and odorless. Water swells in cold water. Dissolve in hot water, after cooling frozen into gel. Soluble in glycerol and acetic acid, insoluble in ethanol and ether. It can be stored for a long time in a dry condition, but it is easy to be deteriorated by the action of bacteria after the wet air is wet.
Last Update：2024-01-02 23:10:35
absorbablegelatinsponge - Preparation Method
Open Data Verified Data
There are two production methods of gelatin: milk of lime method (I. E., Ash method) and hydrochloric acid method (I. E., Salt method). The lime method is generally used. The raw material may be bovine skin, porcine skin or bone. First, the selected aggregate is classified into acid immersion, and the inorganic salt is removed to obtain bone element, then the fat is removed and the oil is removed with water, and then the broken bone element is liminated, washed with water, and neutralized. After neutralization, it was boiled into gelatin solution. Gelatin liquid by high-speed centrifugal separation (removal of grease and impurities), concentration, molding, drying and other processes, namely into solid gelatin.
Last Update：2022-01-01 10:54:33
absorbablegelatinsponge - Standard
Authoritative Data Verified Data
This product is animal skin, bone, tendon and ligament of collagen by moderate hydrolysis (acid, alkali, acid-base mixed method or enzymatic method) after the purification of the product, or a mixture of different gelatin products as described above.
Last Update：2024-01-02 23:10:35
absorbablegelatinsponge - Trait
Authoritative Data Verified Data
- This product is yellowish to yellow, transparent or translucent, micro-strip gloss thin or powder; Odorless. In water for a long time immersion that water swelling and softening, weight can be increased by 5 to 10 times.
- This product is dissolved in hot water or a hot mixture of glycerol and water, insoluble in ethanol, three gas methane or ether; Dissolved in acetic acid.
Last Update：2022-01-01 13:35:31
absorbablegelatinsponge - Use
Open Data Verified Data
The use of this product can be divided into two categories. A kind of the protective ability of its colloid as a dispersant, used in the production of polyvinyl chloride, photosensitive materials, bacterial culture and pharmaceutical, food (such as candy, ice cream, fish gelatin oil capsules, etc.), it can also be used as a protective colloid in turbidimetric or colorimetric assays. Another class uses its binding capacity as a binder for paper, printing, textile, printing and dyeing and electroplating and other industrial sectors.
Last Update：2022-01-01 10:54:32
absorbablegelatinsponge - Differential diagnosis
Authoritative Data Verified Data
- take 0.5g of this product, add 50ml of water, heat to dissolve, Take 5ml of solution, add potassium dichromate test solution-dilute hydrochloric acid (4:1) several drops, which will produce orange flocculent precipitate.
- take 1ml of the remaining solution under identification (1), add 100ml of water, shake well, add several drops of tannic acid test solution, which will cause turbidity.
- take this product, add soda lime, heating, ammonia odor occurs.
Last Update：2022-01-01 13:35:31
absorbablegelatinsponge - Safety
Open Data Verified Data
This product is non-toxic. Packed with a hemp bag lined with a plastic bag. Store in a dry, cool place. Protection against heat and moisture. According to the general provisions of the storage and transportation of chemicals.
Last Update：2022-01-01 10:54:33
absorbablegelatinsponge - Exam
Authoritative Data Verified Data
freezing concentration
take 1.10g of this product, place it in a weighing conical flask, add 80ml of water, place it at 15-18°C for 2 hours, and fully expand it, dissolve in a 60°C water bath by heating, take it out, weigh it, add an appropriate amount of water to make the content 100g, take 10ml, put it in a tube with an inner diameter of 13mm, freeze it in an ice bath at 0°C for 6 hours, and take it out, inverted for 10 seconds, should not flow down.
pH
take l.Og of this product, heat 100ml of water, fully shake to dissolve, let it cool to 35°C, and measure it according to law (General rule 0631). The pH value should be 3.6~7.6.
transmittance
take 2.0g of this product, add 50~60°C water to dissolve and make a 6.67% solution, cool to 45°C, according to UV-visible spectrophotometry (General 0401) measured at 450nm and 620nm, respectively, the light transmittance shall not be less than 50% and 70%, respectively.
conductivity
take this product l. Add not more than 60°C water to dissolve and make a 1.0% solution as a test solution; Another 100ml of water as a blank solution, after keeping the sample solution and the blank solution in a water bath at 30 ° C. And 1 ° C. For 1 hour, measure with a conductivity meter, and use a platinum black electrode as a measurement electrode, after washing the electrode with blank solution for 3 times, measure the conductivity of the blank solution, and the conductivity value should not exceed 5.0uS/Cm. Take out the electrode, then rinse the electrode with the test solution for 3 times, and then measure the conductivity of the test solution. The conductivity should not pass 0. 5ms/cm.
sulfite
Take 20g of this product, place it in a long neck round bottom flask, add 50ml of water, place it to expand, add 50ml of dilute sulfuric acid, immediately connect the condenser tube, and use water vapor distillation, human hydrogen peroxide test solution (the methyl red-methylene blue mixed indicator solution was neutral) in 20ml, the distillate reached 80ml, distillation was stopped; Several drops of Methyl red-methylene blue mixed indicator solution were added to the distillate, with sodium hydroxide titration solution (0.1 mol/L) to the solution is green, and the results of the titration with blank test correction, consumption of sodium hydroxide titration solution (0.lmol/L) not over 1.0.
peroxide
Take 10g of this product, place it in a 250ml stoppers flask, add 140ml of water, place it for 2 hours, heat it in a water bath at 50°C to dissolve it quickly, cool it immediately, and add sulfuric acid solution (1-5). 6ml, potassium iodide 0.2g, 1% starch solution 2ml and 0.5% ammonium molybdate solution 1ml, plug, shake well, place in dark place for 10 minutes, and the solution should not appear blue.
loss on drying
take this product, dry at 105°C for 15 hours, loss of weight should not exceed 15.0% (General rule 0831).
ignition residue
l.Og of this product shall be taken for inspection according to law (General rule 0841), and the residual Tongtong shall not exceed 2.0%.
chromium
take 0.5g of this product, place it in a PTFE digestion tank, add 5 ~ 10ml of nitric acid, mix well, soak overnight, cover the inner cover, tighten the jacket, and place it in a suitable Microwave digestion furnace for digestion. After complete digestion, cancel the inside of the solution and place it on the electric heating plate, slowly heat it until the red-brown steam is evaporated and nearly dried, transfer it to 50ml measuring flask with 2% nitric acid solution, dilute with 2% nitric acid solution to the scale, shake well, as the Test Solution> The same method to prepare reagent blank solution; Take the standard solution of chromium single element, dilute with 2% nitric acid solution to make chromium standard stock solution containing 1.0ug of chromium per 1 ml. In case of clinical use, take appropriate amount of chromium standard stock solution precisely, A control solution containing 0-80ng of chromium per 1 ml was prepared by dilution with 2% nitric acid solution. Take the test solution and the reference solution, take the graphite furnace as the atomizer, according to the atomic absorption spectrophotometry (the first method of general principles 0406), at the wavelength of 357.9nm, no more than 2 parts per million (ppm) of chromium.
Heavy metals
The residue left under the ignition residue item shall not contain more than 30 parts per million of heavy metals after examination by law (pass 0821).
arsenic salt
take this product 2.0g, add starch 0.5g and calcium hydroxide l.Og, add a small amount of water, stir evenly, after drying, first use small fire to make charring, then burn at 500~600°C to make it gray-white, cool, add hydrochloric acid 8ml and water 20ml to dissolve, inspection according to law (General Principles 0822 first law), shall comply with the provisions (0.0001%).
microbial limit
check by microbial limit test for non-sterile products: microbial count method (General 1105) and control bacteria test method (General 1106). The total number of aerobic bacteria in lg test product shall not exceed 1000, the total number of mold and yeast shall not exceed 100, and Escherichia coli shall not be detected; Salmonella shall not be detected in 10G test product.
Last Update：2022-01-01 13:35:32
absorbablegelatinsponge - Category
Authoritative Data Verified Data
absorbable hemostatic agent.
Last Update：2022-01-01 13:35:33
absorbablegelatinsponge - Storage
Authoritative Data Verified Data
sealed, stored in the cool dark.
Last Update：2022-01-01 13:35:33
absorbablegelatinsponge - Absorbable gelatin sponge
Authoritative Data Verified Data
This strain takes gelatin dissolved in water, made by foaming, freezing, drying, sterilization.
trait
This product is a white to yellowish, light, soft and porous sponge; With water absorption, but insoluble in water; After heavier rubbing, not collapse.
identification
take this product about 2cm x 2cm x 0.5cm and immerse it in water at 60~70°C, make it completely wet, discard the excess water, and drop 1 drop of copper sulfate test solution on this sponge, then add 2mol/L sodium hydroxide solution 1 drop, that is blue purple.
examination
- water absorption force take this product about lcmX 1cmX 0.5, precision weighing, soak people in water at 20°C, gently rub with fingers, pay attention not to damage, once, suction foot water, use a small needle to gently clip a corner, put the water surface to stay for 1 minutes, precision weighing, absorption of water should not be less than 35 times the weight of the sample.
- 10 tablets of formaldehyde were cut and crushed, mixed evenly, accurately weighed 0.5g, added with water 100ml, soaked for 2 hours, and constantly shaken, aspirate the supernatant 1.0, add 20ml chromotropic acid test solution, shake, plug, heat in water bath for 30 minutes, let cool, measure absorbance at the wavelength of 570mn according to UV-visible spectrophotometry (General rule 0401), the absorbance should not be greater (0.003%) compared to 0.6% (W/V) standard formaldehyde solution of the control solution prepared by the same method.
- the residue of ignition shall be checked by O.lg according to law (General rule 0841), and the residue shall not exceed 2.0%.
- sterile take this product, inspection according to law (General 1101), should comply with the provisions.
category
Same as gelatin.
specification
- 2cm X 2cm X 0.5cm
- 6m X 2cm X 0.5cm
- 6cm X 6cm X lcm
- 8cm X 6cm X 0.5cm
storage
sealed and preserved.
Last Update：2022-01-01 13:35:34
absorbablegelatinsponge - Reference Information
| pH range of acid-base indicator discoloration | 4 - 7 at 66.7g/l at 60°C |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | Gelatin is composed of animal skin, bone, the collagen in the connective tissue such as the muscle spirit is partially degraded to become a white or light yellow, translucent, microstrip luster thin sheet or powder; Therefore, it is also called animal gelatin, fat glue. It belongs to a kind of macromolecular hydrocolloid, gelatin is a kind of high nutritional value of low-calorie health food, can be used to make candy additives, frozen food additives. In addition, gelatin is widely used in the pharmaceutical and chemical industries. |
| composition and structure | gelatin contains about 16% of water and inorganic salts, and more than 82% of protein. Similar to the parent collagen, gelatin is also composed of 18 amino acids, and the content of the amino acids Pro and Hyp is higher. The triple helix structure in gelatin gel is mainly maintained by intramolecular hydrogen bond and hydrogen bond hydration. Pro-NH, Hyp-OH and other amino acid side chain groups and water molecules can form hydrogen bonds, it is conducive to the stability of the triple helix structure. |
| biological performance | 1. Biocompatibility. Gelatin is a natural polymer material, and its structure is similar to the structure of biological tissue, so it has good biocompatibility. 2. Biodegradability. As a natural water-soluble biodegradable polymer material, gelatin has the advantage that the degradation products are easily absorbed and do not produce inflammatory reaction. In the application of the degradation of gelatin, it is often chemically modified to adjust its degradation rate to meet different needs. |
| Main application | 1. Edible gelatin. It is an important ingredient and additive in food industry. It is often used as gelling agent, stabilizer, emulsifier, thickener and clarifier in the production of meat products, cakes, ice cream, beer, fruit juice and so on. 2. Biofilm material. The most studied gelatin-based film materials at home and abroad are mainly chitosan-gelatin blend film, gelatin-silk fibroin blend film, polylactic acid-gelatin blend film and polyvinyl alcohol-gelatin blend film, these mixed materials greatly improve the physical and chemical properties of gelatin and make the gelatin-based polymer film materials more functional. Gelatin is a hydrophilic chemical that is useful in histochemistry, bacterial culture media, and optical microscope autoradiography. 3. Medical fiber. Other composite materials were blended with gelatin to improve the mechanical properties of gelatin-based Medical fiber materials. 4. Tissue repair and replacement. Gelatin matrix composites as scaffold materials and signal molecular carriers in tissue engineering is one of the research hotspots of biomaterials. The gelatin solution is cross-linked to form a hydrogel, in which water is used as a porogen, and the porous scaffold material is formed after freeze-drying. The pore ratio and pore size can be adjusted by changing the freezing parameters. Therefore, ideal gelatin-based tissue engineering materials can be designed according to different tissue repair requirements. 5. Industrial gelatin. It is used in the manufacture of fiber textile, insulating materials, paper, holographic materials, etc. |
| preparation method | 1. Alkali method: the animal's bone and skin are fully impregnated with lime emulsion, neutralized with hydrochloric acid, washed with water, heated at 60 ℃ ~ 70 ℃, then preserved, bleached, frozen, planing and drying. The finished product is called "Type B gelatin" or "alkaline gelatin". 2. Acid method: the raw materials are acidified in cold sulfuric acid solution with pH value of 1~3 for 2~8 h, rinsed for 24 h, and soaked in water at 50 ℃ ~ 70 ℃ for 4~8 h, the gel is then frozen, extruded, and dried. The finished product is called "Type A gelatin" or "acid-process gelatin". 3. Enzymatic method: the raw material skin was hydrolyzed with protease and then treated with lime for 24 h, neutralized, boiled glue, concentrated, frozen and dried. |
| toxicity | ADI no restrictions (FAO/WHO,2001). |
| Use limit | GB 2760-96: can be used in all kinds of food, GMP is the limit. FAO/WHO(1984,g/kg): processed cheese manufacturing 8; Cream cheese 5; Cooked ham, cooked pig fore leg meat, according to GMT; Shannon cheese 5 (according to the cream); cream 5 (for pasteurized cream or ultra-high temperature cream and Disinfection cream). When making ice cream, gelatin is used as a protective colloid to prevent the increase of ice crystals, so that the product is delicate, about 0.5%. Yogurt, cheese and other dairy products to add about 0.25%, can prevent the precipitation of moisture, so that the texture is fine. In the manufacture of gelatin confection (main ingredient is gelatin), soft candy, milk sugar, protein sugar, chocolate, etc. (add 1% to 3.5%, up to 12%). Gelatin is widely used in canned foods such as lunch meat and corned beef. It can be combined with water in the meat juice to maintain the appearance, humidity and flavor of the product, and about 1% to 5% of the meat is added. It is also used as a thickener for soy sauce. |
| Use | as a thickening agent, China's provisions can be used for all kinds of food, according to the production needs of appropriate use. It can also be used as a clarifying agent for alcohol and a stabilizer for hydrophobic colloid. thickener; Stabilizer; Clarifier; Foaming agent. Gelatin is a hydrophilic colloid, which has the properties of protective colloid, and can be used as a stabilizer and emulsifier of hydrophobic colloid. Also for the Amphoteric electrolyte, so in aqueous solution can be charged particles condensed into a block, used as alcohol, alcohol clarifier. According to the functional properties of gelatin, its use can be divided into two categories. A kind of the protective ability of its colloid as a dispersant, used in the production of polyvinyl chloride, photosensitive materials, bacterial culture and pharmaceutical, food (such as candy, ice cream, Cod Liver Oil capsules, etc.). Another class uses its binding capacity as a binder for paper, printing, textile, printing and dyeing and electroplating industries. According to different uses, the quality requirements of gelatin are not the same. When gelatin is used as an adhesive in adhesive tape, paper containers, paper tubes, binding and other aspects, the bonding strength is the main value factor. When used in photography, food, medicine and other fields, attention is paid to the purity of the product. The national standard for edible gelatin in China is numbered GB6783-86, and the scope of use and the maximum amount of use are GB2760-86. polarographic determination of copper, alkaline zinc plating luminescent agent, determination of silicon dioxide, Identification of the preparation of culture medium, turbidimetric and Colorimetric Determination of protective colloid. additives, adhesives, etc. Gelatin is a hydrophilic colloid, which has the function of protecting colloid, and can be used as stabilizer and emulsifier of hydrophobic colloid. It is an ampholyte that agglomerates charged particles in water and thus can be used as a clarifier for alcohol and alcohol. As a dispersant, adhesive, thickener, stabilizer, emulsifier is widely used in photosensitive materials, pharmaceutical, food, paper, printing, textile, printing and dyeing, electroplating, cosmetics, bacterial culture. |
| production methods | There are mainly milk of lime method and hydrochloric acid method. 1. Milk of lime method the inner layer of fatty skin, pig skin and other deteriorated lower foot skin was cut into small pieces, soaked in 3.5%-4.0% milk of lime for about 30-40D, and changed to milk of lime for 4-6 times in the middle. In the soaking process, often stirred, so that the upper and lower soaking evenly. The soaked hide is taken out of the stone jar, washed with water, neutralized with 10% hydrochloric acid for 3-4H under stirring, and the pH should be 6.0-6.5 after washing. Then add water to the skin 1:1, heat and cook, control the temperature to 60-70 ℃, draw glue at regular intervals, filter with clean gauze while hot, and pump 5-6 times. Dilute glue is sent to the evaporator for concentration to a relative density of 1.03-1.07. The hot glue is transferred into an aluminum pan for cooling, and the cold glue is placed on a stainless steel screen and sent to the drying room for air drying, and the temperature is strictly controlled at about 28 ℃. The dried film is pulverized with particles to obtain the finished product. The yield was about 22% by weight of pig skin. 2. The miscellaneous bones, spine and small bones of livestock were crushed by hydrochloric acid method, extracted with benzene at 45-50 ° C. And washed with water. Clean the bones, with 3.5-4.0% hydrochloric acid immersion, the main bone is soft after the crude bone, washing, so that the pH of the aqueous solution at about 3.5, adding lime milk can be prepared feed calcium hydrogen phosphate and dry calcium chloride. Soak the bone with more than 3.0%-3.5% milk of lime for 30-50D (change the milk of lime for 5-6 times in the middle), take it out, wash it with water for about 1H, and neutralize the bone-purifying element with 0.2 hydrochloric acid for the first time, after the pH is lowered to 3.5-4.0, the neutralization solution is discharged, and then the solution is neutralized for about 2H by adding clear water and then using 0.5% hydrochloric acid. When the acid concentration decreased to 0.2-0.25%, the acid concentration was immediately increased to 1% and this concentration was maintained until the end point of neutralization (pH 3.0) was reached. After neutralization, the bone was washed with water and soaked for 4-5H. Then wash with sodium hydroxide solution, dilute alkaline solution soaked 16-20h after washing with water, that is, refined bone. The refined osteogenin was prepared by 7-way glue boiling, and the water and temperature of each glue were controlled separately. The amount of water added was reduced by one channel, and the temperature of glue boiling was increased by one channel, Increase from 64 °c in the first lane to 85 °c in the seventh lane. The concentration of the gel was also reduced from 8% to 2-3% from the first pass to the seventh pass. The patient survived for 40H. The resulting dilute glue was filtered, concentrated, and used to a density of 1.025-1.075, frozen on the plastic box, and then planed into a sheet on the screen, sent to the drying room air drying, the temperature gradually increased from 25 to 60 degrees Celsius. After drying into the finished product. According to the batch, it is divided into photographic glue, edible glue, and finally for the preparation of peptone baking glue, good glue rate is greater than 60%. Consumption per ton of product: Bone about 7T; 30% hydrochloric acid about 7T. Changde Dingcheng district changhuang Gelatin Factory uses Chrome leather corner waste (Blue alum skin) in leather production to produce glue. The process is as follows: blue alum skin → broken → Liming → bleaching → Liming → bleaching → extracting → concentrating → dropping glue → Drying → crushing. Raw material consumption (kg/t) Blue alum skin 4000 sulfuric acid (98%) 1000 hydrochloric acid (31%) 200 lime 1000 after fully impregnating animal bones and skins with lime emulsion, neutralized with hydrochloric acid, washed with water, heated at 60~70 ° C, and then preserved, bleached, frozen, sliced, and dried. The finished product is called "Type B gelatin", or "alkaline gelatin". Acid method raw materials in the pH value of 1~3 The cold sulfuric acid solution is acidified for 2~8H, rinsed and immersed in water for 24h, heated at 50~70 ℃ for 4~8H, then frozen, extruded and dried. The finished product is called "Type A gelatin", or "acid gelatin". Enzymatic hydrolysis of raw material skin with protease after treatment with lime for 24h, after neutralization, boiling, concentration, freezing, drying and obtained. gelatin is usually produced by using animal bones and skins as raw materials, and there are milk of lime method (alkali method), saline-alkali method, enzymatic method and acid method. Enzymatic hydrolysis of collagen to gelatin by protease, dilute hydrochloric acid is added to dissolve it, and then acetone, sodium sulfate or sodium chloride is used to precipitate the gelatin. This method is not yet mature, the current production of its use to shorten the ash leaching time. The specific process is: degreasing raw materials with dilute sodium hydroxide solution (pH 11~12) for 24h, and then 2907 alkaline protease at 40 deg C for 6H, after washing acid leaching (pH = 2~2.5)1d, wash to pH 5.8~6.0, and then Ash immersion 3 ~ 10d. The lime milk method is prepared from raw materials by pretreatment, Ash leaching, water washing, neutralization, water washing, extraction, filtration, concentration, drying and other processes. This method is more mature, about 80% of the domestic gelatin production by this method, Foreign countries are also widely used, but this method has a long production cycle. Pre-treatment pig skin or bovine skin was cut into small pieces of 5mm × 10mm or short strips of 2mm × 8mm, and then subjected to hydraulic degreasing. Animal bones should be broken to 3 ~ 5cm with benzene at 40~50 ℃, then 3.5% ~ 4.0% hydrochloric acid solution at 10~15 ℃ for 5 ~ 14d, it was washed with water to pH 3.5. Soak the above treated animal skin or bone with 3.5% ~ 4.0% milk of lime at 10~12 ℃ for 30 ~ 50d, and change the milk of lime for 4~6 times during this period, wash with water for 24h to pH 9.0-9.5. Wash 12-24H with 0.2% hydrochloric acid to pH 4-5, then 12-24H with water to pH 5.5-6.0. Extraction, concentration and drying are carried out with water at 50-60 °c, followed by an increase in temperature of 5 °c each time, usually 6-8 times for a total of about 40H. After filtration, the extract is first-effect evaporated at 65-70 °c and second-effect evaporated at 60-65 °c to a concentration of 15%-20%. The concentrated solution is dried on a cold plate at 20~40 ℃ to obtain a film, or is dried on a roller to obtain rubber powder. The saline-alkali method is suitable for cortical raw materials, especially the dry skin which is difficult to handle with lime. The dried crumb was soaked in a mixed solution of 10% sodium sulfate and 2-5% sodium hydroxide at 0-20 ° C. For 1-4 days, washed with water, neutralized and extracted to obtain a finished product. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:32:09
Supplier List
Featured ProductsMultiple SpecificationsSpot supply
Product Name: Gelatin Request for quotationCAS: 9000-70-8
Tel: +86 19849939632
Email: 2470479589@qq.com
Mobile: +86 19849939632
QQ: 2470479589
Wechat: +86 19849939632
Spot supply
Product Name: Gelatin Request for quotationCAS: 9000-70-8
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Spot supply
Product Name: Gelatin Request for quotationCAS: 9000-70-8
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Product Name: Gelatin Request for quotation
CAS: 9000-70-8
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
CAS: 9000-70-8
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
Product Name: Gelatin Request for quotation
CAS: 9000-70-8
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 9000-70-8
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Featured ProductsMultiple SpecificationsSpot supply
Product Name: Gelatin Request for quotationCAS: 9000-70-8
Tel: +86 19849939632
Email: 2470479589@qq.com
Mobile: +86 19849939632
QQ: 2470479589
Wechat: +86 19849939632
Spot supply
Product Name: Gelatin Request for quotationCAS: 9000-70-8
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Spot supply
Product Name: Gelatin Request for quotationCAS: 9000-70-8
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Product Name: Gelatin Request for quotation
CAS: 9000-70-8
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
CAS: 9000-70-8
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
Product Name: Gelatin Request for quotation
CAS: 9000-70-8
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 9000-70-8
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
View History