3.Application: Vitamin B2 (chemical formula: C17H20N4O6, 376.37), also called riboflavin, slightly soluble in water, heating in neutral or acidic solution is stable. For yellow enzymes in the body part of prosthetic group (yellow enzymes play a role of hydrogen in the biological oxidation reduction), when the lack of, will affect the body's biological oxidation, and make the metabolic disorder. Its lesions characterized by inflammation of the mouth, eye and genital area, such as deficiency, cheilitis, glossitis, conjunctivitis and scrotal phlogistic, etc., so the product can be used in the prevention and control of the disease. Vitamin B2 storage is very limited, so every day provided by the diet. Two properties of vitamin B2 is the main cause of the loss: can be damaged by the light, the heating can be destroyed in the alkali
4.Sample: With Free
5.Specification:
Test Items
Standards
Results
Appearance
Yellow or orange-yellow crystalline powder
complies
Absorbance Ratio
0.31-0.33, A373nm/A267nm,
0.36-0.39 A444nm/A267nm
complies
Loss on dry
<3%
<1.4%
Particla Size
90% passes through 28 mesh sieve
90%
Heavy Metal
<10ppm
complies
Assay(ondried basis
>80.0%
80.7%
Conclusion
EP5+BP2008+USP39.
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