6'-Fucose Lactose—a revolutionary breast milk oligosaccharide for precision health CAS number: 80756-86-1

6'-Fucosyllactose (6'-FL) is one of the most abundant human milk oligosaccharides (HMO) in human milk. It is known as the "original guardian of life" and the "golden ingredient in breast milk". It is not only the core functional factor of natural nutrition for infants, but also a key raw material with great application value in the fields of modern nutritional science, high-end formula foods and biomedicine.

Chemical Information

Chemical name: O-α-L-fucosyl-(1→6)-D-lactose

Common name: 6'-fucose lactose

English name: 6'-Fucosyllactose

Chemical formula: C18H32O15

Molecular weight: 488.44 g/mol

CAS number: 80756-86-1

Structural features

6'-Fucose Lactose consists of a lactose molecule (galactose β-1,4 connected to glucose) on the hydroxyl group at position 6 of its galactose unit, connected to an L-fucosyl group through an α-1,6 glycosidic bond. Its unique structure determines irreplaceable biological functions:

Key functional groups: The terminal fucose is an important antigenic determinant (such as H antigen), which serves as a specific receptor recognition site for a variety of pathogens and beneficial bacteria, mediating key microbial interactions.

Highly hydrophilic: The molecular structure gives it excellent water solubility and stability, and it can fully reach the intestinal tract to play its role.

Natural configuration specificity: Its α-1,6 connection is the main form naturally existing in the human body, with the highest bioavailability and activity.

Main applications and advantages

1. Core functional ingredients of next generation infant formula

The gold standard of simulated breast milk: The addition of 6'-FL is a key step to make infant formula milk powder closer to breast milk in function. It makes up for the lack of HMO in traditional formulas and achieves the leap from "nutritional simulation" to "functional simulation".

Build healthy intestinal flora: 6'-FL is not digested by the upper gastrointestinal tract. After reaching the colon, it can be selectively utilized by beneficial bacteria (such as Bifidobacteria) to promote their proliferation, while inhibiting the colonization of pathogens (such as pathogenic Escherichia coli and Helicobacter pylori), and fundamentally establishing a healthy intestinal microecology dominated by beneficial bacteria.

Strengthen intestinal barrier and immunity: Indirectly enhance intestinal epithelial barrier function by promoting the growth of beneficial bacteria and producing short-chain fatty acids. More importantly, it can directly regulate immune cells, help balance Th1/Th2 immune responses, reduce the risk of infection and allergies, and provide precise guidance for immune system development.

Promote nervous system development: The latest research suggests that HMOs may affect nervous system development through the "gut-brain axis". As the primary HMO, supplementation of 6'-FL has potential long-term benefits for infant cognitive development.

2. Innovative raw materials for special medical food and adult health functional food

Nutritional support for premature and frail infants: For special groups of infants with immature intestinal function and high risk of infection, supplementing 6'-FL is of great clinical significance in preventing necrotizing enterocolitis (NEC) and sepsis.

Adult intestinal health management: used in functional foods or dietary supplements to help regulate intestinal flora disorders in adults and improve symptoms such as antibiotic-associated diarrhea and irritable bowel syndrome.

Immunomodulatory application: Its unique immunomodulatory properties make it show great potential in precise nutritional intervention programs for allergies and chronic inflammation.

3. A valuable tool for biomedical research and drug delivery vector development

Research on the mechanism of pathogen infection: 6'-FL is a molecular probe that studies the mechanism by which various bacteria and viruses (such as rotavirus and norovirus) recognize and adhere to host cells through fucosylated antigens, providing ideas for the development of anti-adhesion therapies.

New drug carrier: Based on the high expression of fucose receptors (such as selectins) on specific cells (such as endothelial cells at inflammatory sites, certain tumor cells), drug delivery systems using 6'-FL or its derivatives as the targeting head can achieve precise drug delivery, improve efficacy and reduce side effects.

Key intermediates in synthetic biology: As complex sugars with well-defined structures, they are important precursors or templates for the biosynthesis of high-value sugar compounds.

Conclusion

6'-Fucose Lactose is not just an advanced nutritional ingredient, it is a biological messenger that connects early life health to lifelong health. From laying the foundation for a baby's lifelong health to managing the intestinal microecology and immune balance of adults; from breakthroughs in nutritional science to precision tools in biomedicine, 6'-FL is leading a revolution from "passive nutrition" to "active health intervention".

The above information is provided by the editor of KASONS and is for scientific research only.