The characteristics of a variety of applications of vitamin additives - vitamins, additives - Food Industry
1. Vitamin A Preparation Vitamin A preparations are natural products and synthetic types. Natural products mainly cod liver oil and its products, mainly synthetic vitamin A alcohol, vitamin A Acetic acid Ester, vitamin A palmitate, and some preparations of vitamin A propionate. As Feed additives The present main products of synthetic vitamin A-based
1 cod liver oil and its products: liver, cod liver oil is a fresh aquatic animals, such as raw materials and pyloric obtained. Cod liver oil as the oily, except vitamin A, also contains vitamin D and other fat-soluble vitamins, are generally life-dimensional volume of A and vitamin D lower, as several hundred international units per gram. Now rarely used as a feed additive. Vitamin A oil and vitamin D oil: cod liver oil under vacuum distillation. Then a series of processing can be obtained with high concentrations of vitamin A refined and vitamin D, vitamin A dissolved in vegetable oil adjusted vitamin D levels or standards shall be a certain concentration of vitamin A and vitamin D fuel oil. Vitamin AD oil: be refined by the vitamin A, D with soluble vegetable oil, adjusted levels of products.
2 synthetic vitamin A and its preparation: the synthetic vitamin A compounds, mainly vitamin A alcohol, peacekeeping, and a prime acetate and vitamin A palmitate. Poor stability of vitamin A alcohol, used as feed additives primarily for the latter two.
3 powder: Vitamin A powder with adsorbed and coated two kinds. adsorbed preparations of vitamin A: about to liver oil or water soluble vitamins A liquid used Cereals Defatted germ or rice bran, etc. Powder Made as adsorbent. Poor stability.
coated Stabilized vitamin A preparation: In order to increase the stability of vitamin A preparations, except vitamin A fat-based, add the antioxidant, the present methods are commonly used to package the material with stability is, there are mainly two Products that particles and particle powder capsule.
Microcapsules are based on gelatin isoelectric point in its low solubility characteristics, using multiple coagulation to gelatin-coated material microcapsules, so that outsourcing is a layer of vitamin A ester tight protective film, isolated vitamin A ester and air, light and other contacts, so as to achieve the prevention or delay of vitamin A esters Oxidation , Is the more stable vitamin A preparations. China's current production of this feed additive preparation of vitamin A and more. Particulate powder, or spray dried powder is a relatively new manufacturing technology products, the application of spray, Starch Absorption drying method. Standard palm vitamin A acetate or acetic acid ester dispersed in gelatin and sucrose or glucose to the composition of the matrix, adding Antioxidants , This mixture with air atomization spray is mixed with dry starch, water fog particle surface was dry starch, the final screening, vacuum low-temperature drying. Adsorption with starch modified starch with a hydrophobic better. This modified starch powder particles covered by good oxidation resistance, high hardness, resistance to mechanical damage, moderate size in the 30 - 80 mesh range, unit feed particles are more irregular and rough surface particles, easily mixed adsorption all. Compared with the microcapsules, has obvious advantages. Spray freeze coagulation particles can also be used to prepare powder.
Recent years, foreign Technology Technical literature have reported that application of -cyclodextrin of drug-coated materials, easy-to-photosensitive, oxidation and decomposition of vitamin A, D, E, K and his unstable vitamins made from the -cyclodextrin-coated preparations can be increase the stability of these vitamins. Preparation of the stable these vitamin A after ingestion by an animal preparation, in vivo-coated material is gradually dissolved, vitamin capsule released from the heart, animals, the body can absorb and utilize. Package is based vitamin A preparations containing active ingredients vary widely used as feed additives for more than 10 to 500 000 IU / g.
2. -carotene preparations Mostly microbial compounds, the pure product as red-brown to dark purple crystalline powder, light, oxygen and acid sensitive. Insoluble in water, slightly soluble in fats and oils, soluble Acetone , Petroleum ether and other organic Solvent . Due to poor stability of -carotene preparations of goods with the preparation of vitamin A, as much as all the stability of coated material handling agents. Roche's products such as -carotene with stable 10% gelatin-coated powder, in a confined Container In storage in a dry place below 20 , can be stored for 6 to 12 months.
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