is widely found in natural foods, and NMN
is found in vegetables, fungi, meat and shrimp. Scientists have also discovered the presence of NMN in human milk and sputum milk through novel enzyme coupling techniques. The content of NMN in human milk is higher. The CAS number of the NMN is 1094-61-7. The processing characteristics study found that NMN was stable in water or milk at 75 °C for 5 min, and the activity loss was about 20% after 5 min treatment at 95 °C, indicating that the addition of NMN in pasteurized milk is theoretically feasible. Taking NMN experiments have shown that NMN can be rapidly absorbed within 30 min during the lower dose of NMN, effectively transported to the blood circulation, and immediately converted to NAD+ in the main metabolic tissues. In addition, NMN did not show any significant toxicity and lethality during the December dry forecast. It also had no serious side effects and it had high food safety. Currently, Japan's Megumi has developed a food composition of NMN and resveratrol. Resveratrol is a natural polyphenolic compound that acts as an estrogen and has antioxidant, antibacterial, tyrosinase-inhibiting activity, metabolic syndrome, and longevity. Experiments have shown that the food composition can lower the total cholesterol content in the blood, reduce the incidence of myocardial infarction, reduce the low-density lipoprotein content, and reduce the uric acid content in the blood and the neutral fat such as triglyceride content. Functional foods with NMN as active ingredient have great potential for development, but there are few human experimental data on NMN, and the maximum tolerated dose and tolerance time of human body are rarely reported. Therefore, the human body safety of NMN still needs further exploration. In health foods, with NMN as an active ingredient, Fu Rongzhao has invented health supplements that can be used to improve arteriosclerosis and cardiovascular diseases, as well as health supplements that can be used to improve Parkinson's disease and health care products for anti-aging. With the further disclosure of NMN security, it is believed that there will be more food or health care products added with NMN for the benefit of human life in the future.