One bitter glyceride 
 ① yellow or light yellow transparent liquid, odorless. Slight coconut smell. Insoluble in water, shaking with water can be dispersed. Soluble in ethanol, ethyl acetate, chloroform and other hydrogen chloride and benzene, Properties and Applications: This product is a new and efficient preservative, against Gram-bacteria, molds, yeasts have a high degree of suppression, but the bacteria, no inhibition of viruses and other microorganisms. This product is extremely stable in the dry state. Widely used in bean paste, cakes, moon cake and other functional food and health products. Maximum use of 1.0k/kg. Preservation for sausage products, can significantly prolong the shelf life of food Germany. Maximum usage is 0.5k/kg. This product is oil-based emulsifier, the oil-soluble food coloring, spice flavors have good emulsifying effect. 

 ② The bitterness of glycerol is a new non-toxic and efficient broad-spectrum preservative. Its Gram-bacteria, fungi, yeast were inhibited. 80s of last century and the first developed by the Japanese market, the provisions do not need to limit food preservative. FAO / WHOJECFA also bitter ADI value is not as limited glyceride. One bitter glycerol carbon by the eight straight-chain saturated fatty acids and bitter one mole of the esterification of glycerol. Molecular Formula C11H22O4, molecular weight 218, melting point 40 ℃, soluble in ethanol and other organic solvents. And fat in the body as it can be catabolic, and ultimately into carbon dioxide and water, without any savings and adverse reactions. Rat oral LD50 acute toxicity test for the 15g/kg. Rats were treated with 150mg/kg, 750mg/kg, 3750mg/kg fed 90 days, no adverse reactions in animals. Heilongjiang light of the successful pilot in 1995, after testing a variety of food preservation, the effect is obvious. Add the meat concentration of 0.05% ~ 0.06%, the bacteria completely inhibited fungal yeast; in the use of 0.04% Health section, shelf-life than the control group from 2 days to 4 days; account ester used in tofu, have the same effect. Requirements of GB2760-1996 can be used for bean pie, cake, moon cake, the wet section, the maximum use of 1g/kg; sausage is 0.5g/kg. 
 ③ traits: 
 Light yellow transparent liquid, odorless, slightly coconut smell. Insoluble in water, shaking with hot water can be dispersed. Soluble in alcohol and organic solvents. 
 Features and Application: 
 1, it is a new type of highly effective broad spectrum preservative, against Gram-bacteria, molds, yeasts have a high degree of suppression, but the bacteria, viruses and other microorganisms had no inhibitory effect. 
 2, this product is very stable in the dry state. An oil-soluble emulsifier, the oil-soluble food colors, flavors and fragrances has good emulsifying effect. 
 3, is widely used in bean paste, cakes, moon cake, bread, and other functional food and health care products, from the effect of improving the quality of rice products. 
 4, for sausage products, dairy products, fruit and vegetable products, Preservation, could significantly prolong the shelf life of food. 
 Use and usage: 
 In the bean paste, cakes, moon cake and other functional food and health products.