Solid glycine is white to off-white crystalline powder, odorless. Soluble in water, almost insoluble in ethanol or ether. It is used in the pharmaceutical industry, biochemical experiments and organic synthesis. It is an amino acid with the simplest structure in the amino acid series and is not necessary for the human body. It has both acidic and basic functional groups in the molecule. It can be ionized in water and has strong hydrophilicity. , but it is a non-polar amino acid, soluble in polar solvents, but hardly soluble in non-polar solvents, and has a higher boiling point and melting point. Glycine can exhibit different molecular forms by adjusting the acidity and alkalinity of the aqueous solution.
Food
1. Used as a nutritional supplement, mainly for seasoning and other aspects;
2. It has a certain inhibitory effect on the reproduction of Bacillus subtilis and Escherichia coli, so it can be used as a preservative for surimi products, peanut butter, etc., and the addition amount is 1% to 2%;
3. It has anti-oxidation effect (using its metal chelation effect), adding it to butter, cheese, and margarine can extend the shelf life by 3 to 4 times;
4. In order to stabilize lard in baked food, 2.5% glucose and 0.5% glycine can be added;
5. Add 0.1% to 0.5% to the wheat flour used for instant noodles, and it can also play a seasoning role;
6. It can buffer the taste of salt and vinegar.
Agriculture
1. It is mainly used as an additive and attractant for adding amino acids to feed for poultry, livestock and poultry, especially pets. Used as a hydrolyzed protein additive, as a synergist for hydrolyzed protein;
2. In the production of pesticides, it is used to synthesize the intermediate glycine ethyl ester hydrochloride of pyrethroid insecticides, and can also synthesize the fungicide iprodione and the herbicide solid glyphosate.
Industry
1. Used as an additive in electroplating solution;
2. Used in pharmaceutical industry, biochemical experiment and organic synthesis;
3. Used as raw materials for cephalosporins, thiamphenicol intermediates, intermediates for the synthesis of imidazole acetic acid, etc.;
4. Used as cosmetic raw material.
Items | Specifications |
Appearance | W hite crystalline powder |
Assay (C2H5NO2),% | 98.5~101.5 |
Ph value (5% in water) | 5.5~7.0 |
Loss on drying,% | ≤0.20 |
Residue on ignition,% | ≤0.10 |
Arsenic (as As),% | ≤0.0001 |
Heavy metal (as Pb) ,% | ≤0.001 |
Chloride (as Cl),% | ≤0.010 |
Hydrolyzable substances | complies |