Introduction of Food Grade Glycerin

Glycerol is the common name of propanetriol, molecular formula: C3H8O3, molecular weight: 92.09, CAS No.: 56-81-5, is a colorless transparent viscous liquid. Boiling point 290 ℃ (decomposition), relative density 1.26362 (20/20 ℃), refractive index 1.4746, viscosity (20 ℃) 1499mPa – s. Glycerol can be mixed with water and ethanol.

Glycerol can be miscible with water and ethanol, aqueous solution is neutral. Glycerol can absorb moisture from the air and has no odor. In nature, glycerol mainly exists widely in plants and animals in the form of glycerol ester. Food grade glycerin is a sweetener and humectant usually used in food processing industry, which gives food smooth and delicious and better sensory.

Specific uses of food grade glycerin

1、Application in bread, cake, etc.
Food grade glycerin is used in bread, cake, etc. for water retention humectant, strong moisture absorption, to maintain the fluffy texture, to extend the shelf life. It can be used in such enterprises as Pan Pan, Hsu Fu Chi and so on. It is recommended to add about 5-8%.

2、Application in gum-based candy
Mainly including chewing gum and bubble gum two categories, basically sugar (or sugar alcohols), syrup, gum base, glycerol, flavors, colors and other components. Glycerin as candy softener, emulsifier, etc.. It is recommended to add 0.8-2%.

3, fruit juice, fruit vinegar and other beverages in the application of
Fruits contain tannin, which is the source of bitter and astringent odor in fruits. Glycerol can quickly decompose the bitter and astringent odor in fruit juice and fruit vinegar, enhance the flavor and aroma of fruit juice itself, bright appearance, sweet and sour taste. Suggested adding amount 0.8-1%.

4、Application in fruit wine, white wine, wine and other alcoholic beverages
It can be used as taste improver, sweetener, bitter and miscellaneous flavor remover in wine, and can increase the aroma, mellow sweetness and thickness of wine when added in appropriate amount. It is recommended to add 0.5-1.5%.

5、Preserved fruit, fruit cake industry applications
When processing and making dried fruits, the products are easy to lose water and dry and hard due to storage problems. Fruits also contain tannin. Food grade glycerin can quickly inhibit the anisotropic proliferation of tannin in dried fruit, improve the palatability of dried fruit, enhance the aroma of dried fruit itself, improve the grade of dried fruit, increase the freshness and sweetness of dried fruit and the appearance of the sense of wetness.

Glycerin also has the special effect of antioxidant and moisturizing, so it can lock the water that should be in the finished preserved fruits, and can effectively prolong the shelf life. The application method of fruit cake is the same.

Specific use methods: First, will have been sun-dried or baked after the completion of a variety of dried fruit, in the processing of food-grade glycerin and other raw materials together with the mix, added to a variety of dried fruit in the marinade, according to the product per 100 kg, the use of this product 1kg calculation. Second, in the use of fruit cake, in the boiled fruit cake to add food-grade glycerin, per 100 kg to add 0.8-1 kg calculation, after adding the product, mixing well, cooling molding can be packaged for market.

After adding food-grade glycerin to the above two products, it can play a better effect in palatability, color, moisturizing and antioxidant. Suggested addition amount 0.8-1%.

6、Application in jerky, sausage and bacon industry
Dried meat belongs to medium moisture content food, in order to achieve the purpose of long-term preservation, the traditional method is often through a long period of drying to control the moisture content of the product at 16% (moisture activity Aw<0.7) or so, but this will inevitably result in the organization of the product is dry, hard, poor tenderness, grey color, adding glycerol as a humectant can maintain the conditions of low moisture activity, improve the moisture content, thus improving the tenderness. Adding 3% of food-grade glycerin can make the product water activity Aw<0.7, while the moisture content is controlled at 20%, the product organization is soft and the tenderness is improved.

In processing and production, the glycerin is diluted with pure grain wine above 50 degrees, evenly sprayed on the meat or cut meat, fully rubbed or stirred. It plays the role of water locking, moisturizing, to achieve the effect of weight gain, to extend the shelf life, and to improve the product taste, color and aroma. Recommended additive amount 1.2-3%.

Specific use method I. Firstly, the marinated dried meat, dried meat for the first baking to reach the water must be maintained, take out the food-grade glycerin evenly sprayed on the dried meat, dried meat, kneaded and then processed, the dosage of every 100kg, add 1.2-1.5kg of this product. Second, the use of sausage: cut the meat, to every 100 kg, 1.2 kg of food-grade glycerin, diluted with 500 ml of more than 50 degrees of pure grain wine, mixed into 100 kg of cut meat and fully stirred according to the requirements of adding other ingredients, stirring can be made after the enema.

7、Application in pet food
As a kind of pet leisure food, dried chicken breast is popular in Europe and America. Our country is the largest production and export of dried chicken breast products, nearly 100 million tons per year. Europe and the United States have very strict requirements for pet food, not only physical and chemical indicators to meet the corresponding standards, the appearance of the product is also very high requirements.

The appearance of the dried chicken breast products should be reddish in color and smooth, without fat, stasis, white silk and dry cracks. Adding food-grade glycerin as humectant can effectively prevent drying and cracking and improve the appearance of the products. Add about 2% of food grade glycerin into the dried chicken breast to get the ideal product appearance of dried chicken breast.

8、Application of Chinese and western pasta and confectioneries
Add appropriate food-grade glycerin to pastry food, especially frozen dumpling skin, buns and other pastry food, it can effectively play the role of moisturizer and emulsifier, make the product anti-freezing and not cracked, with unique flavor, fluffy and delicious, and strengthen the palatability of the noodle products. Suggested adding amount: about 1% of flour amount.

9、Other food industry applications
Used as solvent, moisture absorber and color carrier in food industry. In flavoring and coloring food, glycerin helps food molding because of its viscosity. In the rapid freezing of food, glycerol can be used as a heat transfer medium in direct contact with food. Glycerin is also used as a lubricant in food processing and packaging machinery. Glycerin is used as a wetting agent in tobacco (mainly cigar tobacco) to keep the tobacco moist, prevent brittleness and add sweetness to the tobacco.