Name | Zein |
Synonyms | Zein Zeins ZEIN,NF Zein maize Zein, purified ZEIN FROM CORN ZEIN FROM MAIZE corn zein Peptide |
CAS | 9010-66-6 |
EINECS | 232-722-9 |
Molecular Formula | N/A |
Melting Point | 266-283°C |
Solubility | Practically insoluble in acetone, ethanol, and water;soluble in aqueous alcohol solutions, aqueous acetone solutions(60–80% v/v), and glycols. Also soluble in aqueous alkalinesolutions of pH 11.5 and above. |
Appearance | Yellow to brown powder |
Color | White to Yellow to Orange |
Merck | 10119 |
Storage Condition | Room Temprature |
MDL | MFCD00062414 |
Physical and Chemical Properties | Light yellow to straw yellow, granular or fine powder, insoluble in water, the main component is alcohol-soluble cereal protein, a component of corn. |
Use | For tablet coating |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
WGK Germany | 3 |
FLUKA BRAND F CODES | 21 |
HS Code | 35040090 |
is a white to light yellow powder or particulate matter, may also be alcohol soluble viscous liquid. The main component is alcohol-soluble cereal protein. Insoluble in water, soluble in ethanol. After dissolving in ethanol, the film can be formed after drying, and the film can be impervious to water and air.
The corn gluten was extracted with an aqueous alkaline Isopropanol Solution containing sodium hydroxide, cooled and precipitated.
The alcohol-soluble protein extracted from corn gluten. The amount of nitrogen (N) should be 13.1% to 17.0% based on the dry product.
It can be used as an edible surface coating modifier.
take l g of this product (based on dry product), put it in a 100ml beaker, add 50ml ethanol 50m l, stir with magnetic stirrer, and heat to 30*0, the sample was completely dissolved. Transfer the 0 sample solution to a 250ml separatory funnel, add 100ml of n-hexane, slowly shake and mix, and then stand to make the layers, transfer the upper layer (n-hexane layer) to 80X: after drying to a beaker of constant weight, the lower layer (ethanol layer) was poured out into another separatory funnel, and the extraction was repeated 6 times by adding 100ml of n-hexane. The n-hexane extract was combined and evaporated to dryness, then dried to constant weight, and the remaining residue should not exceed 12.5%.
take this product at 1 0 5 T: dry to constant weight, weight loss shall not exceed 8. 0% (General Rule 0 8 3 1).
The l. O. g of this product shall be taken for inspection according to law (General Rule 0 8 4 1 ) , and the residue shall not exceed 0.3%.
The residue left under the ignition residue item shall be taken and inspected according to law (General Rule 0 8 2 1 second law), and shall not contain more than 20 parts per million of heavy metals.
take this product, check according to law (General rule 1105 and general rule 1 1 0 6 ) , the total number of aerobic bacteria per l g of test sample shall not pass lO O c fu, the total number of molds and yeasts should not exceed lO O c f u, and Escherichia coli should not be detected.
take 0.2g of this product, accurately weigh, measure and calculate according to the nitrogen determination method (General Rule 0 7 0 4 First method).
pharmaceutical excipients, coating materials and release blockers.
sealed storage.
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Introduction | corn alcohol is the main protein in corn gluten meal, because it is insoluble in water and lacks lysine, tryptophan and other essential amino acids, there are also color and odor problems, and therefore less used as food raw materials. However, corn alcohol has good film forming, gelation and strong oxidation resistance. With the development of high decolorization and deodorization technology, its application range has been greatly broadened, make it a widely used industrial raw material. |
Application | the common name of corn is corn protein, white or light yellow granules or resin-like substances. In the dry state is relatively stable to heat. It can be widely used in the manufacture of plastics, coatings, adhesives, inks and emulsifiers. |
synthesis method | chemical synthesis method of water-soluble corn prion, characterized in that: the PEG carboxylic acid derivative was dissolved in an excess of dichloro sulfoxide and reacted under magnetic stirring under heating reflux to obtain the PEG acid chloride derivative. In addition, the Zein dimethylformamide solution was taken, and the PEG acid chloride solution was slowly dropped into the Zein solution, and the reaction was heated at 60 ° C. For more than 10 hours under stirring, and the final product was obtained by separation, purification and drying. |
identification test | dissolve about 0.1g of sample in 0.1mol/L sodium hydroxide, add several drops of copper sulfate test solution (TS-77). Warm in water bath, should appear purple. 25mg of the sample was placed in a test tube and 1ml of nitric acid was added. With vigorous agitation, the solution turned pale yellow. Add 10ml of 6mol/L ammonium hydroxide solution, which should be orange. |
toxicity | GRAS(FDA § 184.1984,2000). |
Use limit | without limitation (GMP;FDA § 184.1984,2000). |
Use | for tablet coating biochemical studies |
production method | The gluten obtained from corn (Zea mays) is extracted with an aqueous alkaline Isopropanol Solution containing sodium hydroxide, and then cooled, zein is precipitated. |