What Exactly is NMN? It Actually Exists in Natural Foods
When it comes to anti-aging, boosting energy, and maintaining vascular health, many people have heard of a specific term—NMN (Nicotinamide Mononucleotide). In recent years, it has garnered significant attention due to its potential roles in metabolic regulation, neuroprotection, and anti-aging. Recently, a review paper published in the Journal of Food Composition and Analysis (published in 2026) systematically summarized the research progress of nicotinamide mononucleotide (NMN) regarding its health implications, synthesis pathways, and analytical techniques.
The uniqueness of this paper lies in its systematic integration of NMN's health effects, synthesis methods, analytical technologies, and regulatory status. It places a special emphasis on the interdependence between synthesis and detection, providing an interdisciplinary perspective for the industrialization and clinical translation of NMN.
It is particularly important to note that NMN exists in two structural forms: β-NMN (the biologically active, effective ingredient) and α-NMN (an inactive impurity). In qualified products, the active ingredient must exclusively be β-NMN.
Nicotinamide (NAM): Serves as the redox-active moiety; precursor to NAD⁺ involved in energy metabolism and repair.
D-Ribose: Acts as the sugar backbone linking nicotinamide and phosphate via glycosidic and ester bonds.
Phosphate Group ($\text{PO}_4^{3-}$): Confers polarity and enables phosphorylation, essential for NAD⁺ biosynthesis.
NMN in Everyday Foods
NMN naturally occurs in daily foods, though the content is relatively low:
Plant-based foods: Edamame has the highest content ($0.47\sim1.88\text{ mg}/100\text{ g}$), followed by avocados ($0.36\sim1.60\text{ mg}/100\text{ g}$).
Meat and seafood: Contain only trace amounts, roughly $0.06\sim0.42\text{ mg}/100\text{ g}$.
Dairy products: NMN content in breast milk is significantly higher than in regular cow's milk. Regular milk mainly contains NR (another NAD⁺ precursor), which converts into NMN after entering the body.
However, it is highly challenging to achieve an effective supplementary dose through a standard diet alone. Human clinical trials show that the effective daily supplementary dose is around 300 mg—which translates to eating dozens of kilograms of edamame every single day. This is precisely why NMN dietary supplements have captured so much interest.
A vast body of animal experiments shows that NMN supplementation exhibits positive effects across multiple areas:
Improving Metabolism, Combating Obesity and Diabetes: NMN enhances insulin sensitivity and improves glucose tolerance, helping the body utilize blood sugar more efficiently.
Cardiovascular Protection, Maintaining Vascular Youthfulness: It boosts vascular endothelial cell function, improves blood circulation, and delays age-related cardiovascular decline.
Brain Protection, Delaying Neuro-Aging: In animal models of neurodegenerative conditions like Alzheimer's disease, NMN has demonstrated potential in boosting cognitive abilities, lowering neuroinflammation, and protecting nerve cells.
Systemic Anti-Aging: It activates the Sirtuins family (particularly SIRT1), often dubbed "longevity proteins," which regulate cell cycles, repair DNA damage, and slow cellular senescence. Some studies have even observed telomere elongation (the "protective caps" at the ends of chromosomes) in both mice and humans.
Elevated NAD⁺ Levels: Most trials showed a significant, dose-dependent rise in blood NAD⁺ levels.
Human vs. Animal Discrepancies: The outcomes in human trials are generally less pronounced than those seen in animal models. Potential reasons include the human body's more robust NAD⁺ regulatory mechanisms, a superior ability to maintain homeostasis, relatively lower clinical trial dosages, and inherent physiological differences between humans and animals.
The review contrasts the two major manufacturing pathways: chemical synthesis and biosynthesis.
1. Chemical Synthesis Early manufacturing relied on bromination condensation or TMSOTf-catalyzed condensation, optimizing β-NMN yields to around 58%. However, this route suffers from excessive impurities, separation difficulties, low overall yields, and environmental concerns caused by the heavy use of organic solvents.
2. Biosynthesis (Fermentation & Enzymatic Catalysis)
Fermentation: This method utilizes genetically engineered E. coli or Bacillus subtilis. By deleting competitive genes, introducing key enzymes (NAMPT, PRPP synthetase), and optimizing metabolic flux, recent research has pushed NMN yields to 46.66 g/L (in a 2-liter bioreactor).
Enzymatic Catalysis: This primarily involves two distinct pathways:
NAMPT Pathway: Uses nicotinamide (NAM) and 5-phosphoribosyl-1-pyrophosphate (PRPP) as substrates. Through metabolic engineering optimizations, it has achieved an NMN titer of 1.8 mM.
NRK Pathway: Uses nicotinamide riboside (NR) as a substrate, employing the NRK enzyme to catalyze phosphorylation. Coupled with an ATP regeneration system, it achieves highly efficient production at 281 g/L.
Overall, the biosynthesis pathway delivers higher yields, better sustainability, and superior stereochemical control.
Bontac Bio possesses the world's first Bonzyme full-enzymatic technology alongside its proprietary Bonpure 7-step purification technology. Through multi-step precision separation, it ensures that NMN purity consistently reaches 99.9%+. High purity means high activity and minimal impurities, allowing every single batch to maintain uniform quality.
Core Purchasing Advice: Premium-grade NMN raw materials must be accompanied by a dedicated LC-MS/MS isomer test report. Products that only provide an HPLC report cannot definitively prove their actual content of active β-NMN.
European Union: Classified as a "Novel Food," requiring a complete safety assessment before it can be commercialized.
In this landscape, Bontac Bio remains committed to full-chain independent R&D—stretching from molecular design and cell construction to product purification—creating a comprehensive green synthetic biology platform. This end-to-end control gives every batch traceability, repeatability, and stability.
As an NMN industry pioneer, Bontac has deeply farmed this field since 2012, becoming the world's first to achieve mass production of NMN in 2014. Today, holding the highest number of NMN invention patents globally and passing numerous international authoritative certifications, Bontac stands proud as the raw material supplier to elite research teams at Harvard University. Over a decade of dedication embodies our philosophy: "Science as the foundation, quality as life."
Presently, Bontac Bio serves as a trusted supplier to over 1,200 enterprises worldwide. Its products are widely integrated across nutritional health, biomedicine, medical aesthetics, daily chemicals, and green agriculture. The company also offers custom, one-stop solutions ranging from functional raw materials to formulations and finished products, empowering partners to bring top-tier products to market more efficiently.
On the journey of healthy aging, making the right choice matters just as much as the effort you put in. When it comes to NMN, choosing the right raw material is your ultimate responsibility toward health.
References：
Li, X., Liu, Y., Luo, Y., Jiang, X., Zhang, H., Zhu, F., Pang, Y., & Chen, D. (2026). Unraveling nicotinamide mononucleotide (NMN): A critical review of health implications, synthesis pathways, and analytical techniques. Journal of Food Composition and Analysis, *152*,109027.
https://www.sciencedirect.com/science/article/pii/S0889157526001705
The uniqueness of this paper lies in its systematic integration of NMN's health effects, synthesis methods, analytical technologies, and regulatory status. It places a special emphasis on the interdependence between synthesis and detection, providing an interdisciplinary perspective for the industrialization and clinical translation of NMN.
PART 01
What Exactly is NMN? It Actually Exists in Natural Foods
NMN is the direct precursor to NAD⁺, a crucial coenzyme in the human body. Simply put, after ingesting NMN, the body can rapidly convert it into NAD⁺. NAD⁺ is responsible for cellular energy supply, DNA damage repair, and the regulation of aging-related genes. As we age, NAD⁺ levels in the human body decline year by year, which is one of the key reasons why we feel less energetic and experience a slower metabolism.It is particularly important to note that NMN exists in two structural forms: β-NMN (the biologically active, effective ingredient) and α-NMN (an inactive impurity). In qualified products, the active ingredient must exclusively be β-NMN.
Nicotinamide (NAM): Serves as the redox-active moiety; precursor to NAD⁺ involved in energy metabolism and repair.
D-Ribose: Acts as the sugar backbone linking nicotinamide and phosphate via glycosidic and ester bonds.
Phosphate Group ($\text{PO}_4^{3-}$): Confers polarity and enables phosphorylation, essential for NAD⁺ biosynthesis.
NMN in Everyday Foods
NMN naturally occurs in daily foods, though the content is relatively low:
Plant-based foods: Edamame has the highest content ($0.47\sim1.88\text{ mg}/100\text{ g}$), followed by avocados ($0.36\sim1.60\text{ mg}/100\text{ g}$).
Meat and seafood: Contain only trace amounts, roughly $0.06\sim0.42\text{ mg}/100\text{ g}$.
Dairy products: NMN content in breast milk is significantly higher than in regular cow's milk. Regular milk mainly contains NR (another NAD⁺ precursor), which converts into NMN after entering the body.
However, it is highly challenging to achieve an effective supplementary dose through a standard diet alone. Human clinical trials show that the effective daily supplementary dose is around 300 mg—which translates to eating dozens of kilograms of edamame every single day. This is precisely why NMN dietary supplements have captured so much interest.
PART 02
Health Benefits of NMN: Outstanding Results in Animal Trials, Human Research Ongoing
A vast body of animal experiments shows that NMN supplementation exhibits positive effects across multiple areas:
Improving Metabolism, Combating Obesity and Diabetes: NMN enhances insulin sensitivity and improves glucose tolerance, helping the body utilize blood sugar more efficiently.
Cardiovascular Protection, Maintaining Vascular Youthfulness: It boosts vascular endothelial cell function, improves blood circulation, and delays age-related cardiovascular decline.
Brain Protection, Delaying Neuro-Aging: In animal models of neurodegenerative conditions like Alzheimer's disease, NMN has demonstrated potential in boosting cognitive abilities, lowering neuroinflammation, and protecting nerve cells.
Systemic Anti-Aging: It activates the Sirtuins family (particularly SIRT1), often dubbed "longevity proteins," which regulate cell cycles, repair DNA damage, and slow cellular senescence. Some studies have even observed telomere elongation (the "protective caps" at the ends of chromosomes) in both mice and humans.
Key Clinical Findings (2020–2024 Human Trials Summary):
Excellent Safety Profile: No adverse effects were reported within the dosage range of $100\sim1250\text{ mg/day}$.Elevated NAD⁺ Levels: Most trials showed a significant, dose-dependent rise in blood NAD⁺ levels.
Human vs. Animal Discrepancies: The outcomes in human trials are generally less pronounced than those seen in animal models. Potential reasons include the human body's more robust NAD⁺ regulatory mechanisms, a superior ability to maintain homeostasis, relatively lower clinical trial dosages, and inherent physiological differences between humans and animals.
PART 03
How is Commercial NMN Produced? Comparing Two Methods
The review contrasts the two major manufacturing pathways: chemical synthesis and biosynthesis.
1. Chemical Synthesis Early manufacturing relied on bromination condensation or TMSOTf-catalyzed condensation, optimizing β-NMN yields to around 58%. However, this route suffers from excessive impurities, separation difficulties, low overall yields, and environmental concerns caused by the heavy use of organic solvents.
2. Biosynthesis (Fermentation & Enzymatic Catalysis)
Fermentation: This method utilizes genetically engineered E. coli or Bacillus subtilis. By deleting competitive genes, introducing key enzymes (NAMPT, PRPP synthetase), and optimizing metabolic flux, recent research has pushed NMN yields to 46.66 g/L (in a 2-liter bioreactor).
Enzymatic Catalysis: This primarily involves two distinct pathways:
NAMPT Pathway: Uses nicotinamide (NAM) and 5-phosphoribosyl-1-pyrophosphate (PRPP) as substrates. Through metabolic engineering optimizations, it has achieved an NMN titer of 1.8 mM.
NRK Pathway: Uses nicotinamide riboside (NR) as a substrate, employing the NRK enzyme to catalyze phosphorylation. Coupled with an ATP regeneration system, it achieves highly efficient production at 281 g/L.
Overall, the biosynthesis pathway delivers higher yields, better sustainability, and superior stereochemical control.
Bontac Bio possesses the world's first Bonzyme full-enzymatic technology alongside its proprietary Bonpure 7-step purification technology. Through multi-step precision separation, it ensures that NMN purity consistently reaches 99.9%+. High purity means high activity and minimal impurities, allowing every single batch to maintain uniform quality.
PART 04
How to Tell Good NMN from Bad? 4 Analytical Methods Demystifying Quality
The review systematically breaks down the core principles and applications of four primary detection technologies:| Analytical Method | Core Characteristics | Ideal Applications |
| High-Performance Liquid Chromatography (HPLC) | Easy to operate, lower cost, but struggles to distinguish between α-NMN and β-NMN isomers. | Routine quality control |
| Liquid Chromatography-Tandem Mass Spectrometry (LC-MS) | High sensitivity, high selectivity; detection limits can reach the nanogram/milliliter (ng/mL) level. | Precise analysis in biological samples and complex matrices. |
| Quantitative Nuclear Magnetic Resonance (qNMR) | Non-destructive to samples, offers accurate structural identification, but has relatively lower sensitivity. | Structural confirmation in complex matrices. |
| Fluorescence Detection (FLD) | Simple, fast, and cost-effective. | Large-scale screening and on-site testing. |
Core Purchasing Advice: Premium-grade NMN raw materials must be accompanied by a dedicated LC-MS/MS isomer test report. Products that only provide an HPLC report cannot definitively prove their actual content of active β-NMN.
PART 05
Regulations & Challenges: Global Differences and the Road Ahead
Different countries and regions classify NMN quite differently, directly shaping product compliance:United States: Allowed onto the market as a dietary supplement; companies must complete raw material notifications.
European Union: Classified as a "Novel Food," requiring a complete safety assessment before it can be commercialized.
Japan: Regarded as a functional food, requiring supporting scientific data on its efficacy.
China: Currently, NMN is not permitted as an ingredient in food or regular health supplements; it is approved strictly as a raw material for cosmetics.
This regulatory fragmentation is just one of the bottlenecks NMN faces as it transitions from the lab to daily life. The review highlights three core challenges remaining in the field:
The Translational Gap: Human clinical evidence remains preliminary, with noticeable knowledge gaps in dose-response relationships, long-term safety, and pharmacokinetics. The data disconnect between animal models and human trials is the primary hurdle for clinical adoption.
Manufacturing Hurdles: Despite breakthroughs in biosynthesis, batch-to-batch variations and stereochemical purity issues (specifically separating α-NMN from β-NMN) still need solving. Figuring out stable, high-quality large-scale production directly determines product accessibility and cost.
Regulatory Discrepancies: Inconsistent regulatory statuses across global markets impact compliance and cross-border trade. Moving forward, there is an urgent need to build standardized, science-based regulatory assessment frameworks.
PART 06
Core Summary & Industry Insights
Current research underscores that NMN holds great promise across multiple physiological and disease models by restoring NAD⁺ homeostasis. Ultimately, establishing its clinical efficacy relies on the tightly woven combination of robust human trials, optimized manufacturing processes, and rigorous analytical standards.In this landscape, Bontac Bio remains committed to full-chain independent R&D—stretching from molecular design and cell construction to product purification—creating a comprehensive green synthetic biology platform. This end-to-end control gives every batch traceability, repeatability, and stability.
As an NMN industry pioneer, Bontac has deeply farmed this field since 2012, becoming the world's first to achieve mass production of NMN in 2014. Today, holding the highest number of NMN invention patents globally and passing numerous international authoritative certifications, Bontac stands proud as the raw material supplier to elite research teams at Harvard University. Over a decade of dedication embodies our philosophy: "Science as the foundation, quality as life."
Presently, Bontac Bio serves as a trusted supplier to over 1,200 enterprises worldwide. Its products are widely integrated across nutritional health, biomedicine, medical aesthetics, daily chemicals, and green agriculture. The company also offers custom, one-stop solutions ranging from functional raw materials to formulations and finished products, empowering partners to bring top-tier products to market more efficiently.
On the journey of healthy aging, making the right choice matters just as much as the effort you put in. When it comes to NMN, choosing the right raw material is your ultimate responsibility toward health.
References：
Li, X., Liu, Y., Luo, Y., Jiang, X., Zhang, H., Zhu, F., Pang, Y., & Chen, D. (2026). Unraveling nicotinamide mononucleotide (NMN): A critical review of health implications, synthesis pathways, and analytical techniques. Journal of Food Composition and Analysis, *152*,109027.
https://www.sciencedirect.com/science/article/pii/S0889157526001705
