Folic acid, also known as vitamin B9, is a water-soluble vitamin.It is One of the folic acid vitamin B complexes, which corresponds to pteroylglutamic acid (PGA), is extracted and purified from the spinach leaves by M. K. Mitchell (1941) and is named Folic acid. Meanwhile, folic acid is rich in fresh fruits, vegetables, and meat. If folic acid in food is cooked for a long time, it can lose 50% to 90%. Folic acid is mainly absorbed in the duodenum and proximal jejunum. The human body folic acid storage capacity of 5 ~ 20mg. Folic acid is mainly excreted via urine and feces, and the daily output is 2-5 ug.

Items of analysis	Specification	Results
Appearance	Yellow or orange crystalline powder, almost odourless	Conform
UV absorption ratio	A256/A365:2.80-3.0	2.9
Water	5.0 %- 8.5 %	7.50%
Residue on ignition	not more than 0.3%	0.07%
Chromatographic purity	not greater than 2.0%	Conform
Organic volatile impurities	meet the requirements	Conform
Assay	97.0~102.0%	98.75%
Total plate count	10000CFU/g Max	Conforms
Coliforms	<30MPN/100g	Conforms
Salmonella	Negative	Conforms
Negative	<1000CFU/g	Conforms
Conclusion:	Complies with USP28

 1. Folic acid is an essential substance for the human body in the use of sugars and amino acids and is essential for the growth and reproduction of cells in the body.    
2. Folic acid helps protein metabolism, and together with vitamin B12 promote red blood cell production and maturation, is an indispensable material for the production of red blood cells.    
3. Folic acid also acts as a promoting factor for growth of Lactobacillus casei and other microorganisms.    
4. Folic acid is an indispensable nutrient for fetal growth and development. The lack of folic acid in pregnant women may lead to low birth weight, cleft lip and palate, and heart defects at birth. If the lack of folic acid within the first 3 months of pregnancy can cause defects in the fetal neural tube, resulting in deformity.    
5. Folic acid plays an important role in cell division and growth and synthesis of nucleic acids, amino acids and proteins. The lack of folic acid in the human body can lead to abnormal red blood cells, increased immature cells, anemia, and decreased white blood cells.