Where can I buy sodium alginate?

　　Sodium alginate belongs to food thickener. You can go to the food additive store to see if it is sold, or you can contact the manufacturers directly. There will be many manufacturers when searching for sodium alginate. There are many domestic actual man ufacturers of sodium alginate in Shandong, and the production value of sodium alginate in Jiaonan accounts for about half of the domestic value. There are many in Jiaonan, Qingdao, Shandong.

　　Usage 1: It is used as sizing agent and printing paste for textiles, and is widely used in food industry as thickener, stabilizer and emulsifier.

　　Use 2: as emulsion stabilizer and thickener, it can be used in all kinds of foods according to China's regulations, and it can be used in moderation according to production needs.

　　Application 3: stabilizer; Thickening agent; Emulsifier; Dispersant; Gelling agent; Film coating agent; Suspending agent

　　Japan is used for ice cream and cold spots to improve shape retention and fine texture, and its dosage is 0.1% ~ 0.4%. When making stuffing, it is endowed with cohesiveness, and its dosage is 0.1% ~ 0.7%. Because it is a hydrophilic polymer with strong hydration, it is difficult for the water adsorbed on the stabilizer to form ice crystals.

　　The amount of stuffing, meat sauce, gravy, frozen food, chocolate, cream flavored hard candy, cold gel, jelly soft candy, syrup, emulsion, etc. used in pies in the United States is 0.1% ~ 0.5%.

　　In beer production, it is used as the solidification remover of copper, and it is removed after coagulation with protein and tannin.

　　It can be made into film for anti-sticking packaging of candy.

　　Usage 4: It is used for increasing blood volume and maintaining blood pressure, eliminating histamine toxoid produced by burns, traumatic blood loss, circulatory system stability before and after operation, massive hemorrhagic shock, burn shock, high fever and acute dysentery and other systemic dehydration, with good therapeutic effect. It also has the effects of expelling cholesterol, inhibiting Pb, Cd and Sr from being absorbed by human body, protecting gastrointestinal tract, regulating intestine, reducing weight and lowering blood sugar. In medicine, it is mainly used as suspending agents, emulsifier, thickener and capsule material of microcapsule.

　　Application 5: Sodium alginate is a high viscosity polymer compound. It is different from starch, cellulose and so on in that it has carboxyl groups and is β The aldehyde group of -D- mannuronic acid is a polyuronic acid formed by glycoside bond. Its functional properties are as follows:

　　(1) Strong hydrophilicity, which can be dissolved in cold water and warm water to form a very viscous and uniform solution.

　　(2) The formed aqueous solution has softness, uniformity and other excellent characteristics which are difficult to be obtained by other analogues.

　　(3) It has a strong protective effect on colloid and strong emulsifying power on oil.

　　(4) When metal salts such as aluminum, barium, calcium, copper, iron, lead, zinc and nickel are added to the solution, insoluble alginates will be generated. These metal salts are buffers such as sodium and potassium phosphates and acetates, which can inhibit and delay solidification.

　　(5) Generally, the pH value is 7, which is neutral and can be adjusted between 4 and 10.

　　(6) It is a linear polymer electrolyte, which can be made into tough fibers (alginate fibers) or films, and has the function of preventing cracking.

　　(7) Low adhesion, suitable for warp sizing and demoulding. Sodium alginate has been listed as a safe food additive in Europe, America and Japan. As a kind of seaweed gum, it can improve the properties and structure of food with its inherent physical and chemical properties. It is low in heat and nontoxic, easy to swell and high in flexibility. When added to food, its functions are solidification, thickening, emulsification, suspension, stability and prevention of food drying. The most important function is gelation, that is, the formation of edible gel, close to solid, to maintain the shape of the molding. Therefore, it is an excellent food additive. It can not only increase the nutritional content of food, improve the quality of products, increase the variety of colors, but also reduce the cost and improve the economic benefits of enterprises.

　　(1) Noodle food: Adding 0.2%-0.5% sodium alginate to dried noodles, fish noodles, fast food noodles and cheese noodles can obviously increase the viscosity, prevent brittleness, effectively reduce the broken head rate, and it is resistant to boiling, foam, non-stick, strong in gluten, high in toughness, delicate, smooth and chewy. When producing bread and other pasta and cakes, adding 0.1%-1% sodium alginate can obviously prevent aging and drying, reduce crumbs, make it strong and taste good.

　　(2) Ice cream, popsicle and ice cream: When producing ice cream, popsicle and ice cream, 0.1%-0.5% sodium alginate is generally added as a stabilizer, and the prepared mixture is uniform, which is easy to adjust the fluidity of the mixture when it is frozen and easy to stir. The product has good shape-keeping, smoothness and delicacy, good taste, no ice crystals are formed during storage, and air bubbles in it can be stabilized, and the expansion rate of the product is increased by about 18%. Increase the output by 15%-17%, and make the products soft and elastic at the same time.

　　(3) Milk products and drinks: Sodium alginate can be used as a stabilizer for frozen milk, frozen fruit juice and other drinks. Adding proper amount of sodium alginate to frozen milk can obviously improve the taste, without sticky and stiff feeling. Especially, adding 0.25%-2% sodium alginate to yogurt can maintain and improve its curd shape, prevent the phenomenon of viscosity decrease during high temperature disinfection, and at the same time prolong the storage period and keep its special flavor unchanged. It can also be used for thickening margarine and emulsifying age nt. In addition, it can be added into beverages, and made into refreshing fruity syrup with saccharin and auxiliary materials, which has a smooth and uniform taste and is stable and non-layered.

　　(4) It is widely used in making candy, frozen sweets and food cores and fillings. Using sodium alginate as the main additive, you can produce excellent soft candy, fresh jelly, grape beads, lotus seed soup, tremella soup, red bean soup and so on. It can also be mixed with other auxiliary materials according to a certain proportion, and after freezing, the pudding with smooth and firm texture can be obtained. In addition, the additives of sodium alginate and starch can be used to make the lining packaging film that can replace the candy and pastry commonly known as "stic ky rice paper" to prevent the melting of candy and the oil separation of pastry, with excellent effect. Not only can the strength and flexibility of the film be improved, which is beneficial to mechanized production, but also can save food and reduce the cost. When sodium alginate is added to the core and stuffing of food, it obviously shows good gel performance and strong adhesion. For example, pies, moon cakes, sandwich cakes, candied fruits and stuffed buns have even texture and good taste.

　　(5) Health food: Sodium alginate is an indispensable dietary fiber for human body, which has unique nutrition, can combine with organic matter, reduce cholesterol in serum and liver, inhibit the increase of total fat and total fatty acid concentration, improve the digestion and absorption of nutrients, and inhibit the absorption of harmful elements such as radioactive strontium and cadmium in the body. Because sodium alginate is a sodium carboxylate (containing -COONa), it can be dissolved in water, while negatively charged carboxylate ions (COO-) can combine with harmful heavy metal elements such as lead and mercury in the human body to generate heavy metal salt precipitation of alginic acid. I t is insoluble in water, so it can be excreted with feces. Jiangtangle, sweet jelly, fruit juice honey powder, orange juice, etc. prepared with sodium alginate will be helpful to treat hypertension, coronary heart disease, obesity, diabetes and diseases of intestinal system if eaten for a long time. Generally, health food is prepared by dissolving sodium alginate with water as auxiliary materials, mixing evenly, and then solidifying into granular, strip and fiber paper, which can be made into solid drinks or meat-like foods. As a food additive, sodium alginate accounts for about 10% of the total in Japan.

　　Other uses include:

　　Medicines: dental bite printing materials, hemostatic agents, coating drugs, hydrophilic ointment matrix, contraceptives, etc.

　　Cosmetics: toothpaste base, shampoo, hair conditioner, etc.

　　Printing and dyeing industry: mordant, finishing size, printing size. Textile industry: warp sizing, waterproof processing, and water-soluble fiber for lace manufacturing.

　　Paper industry: sizing.

　　Mining industry: flotation agent for mineral processing, drilling mud regulator, ceramic adhesive.

　　Rubber industry: latex thickener.

　　Coating industry: water-based coatings, water-resistant coatings.

　　Application 6: stabilizer, thickener, artificial semi-permeable membrane and mordant. Biochemical level is used to fix cells and enzymes; For example, glutamate decarboxylase is immobilized by sodium alginate method.