Factory Wholesale 98% Pure Betulinic Acid (CAS 472-15-1) Birch Bark Extract

Betulic Acid: Source, Properties, and Preparation

Btulic acid is a naturally occurring pentacyclic triterpenoid compound first discovered in the 1990s in the bark of an evergreen plant in the Rhamnaceae family in East Africa. It is widely distributed in nature. Besides its original discovery, it can also be extracted from plants such as birch bark, syzygium wilfordii leaves, and jujube seeds, or obtained through chemical synthesis using betulin as a raw material.

Currently, there are three main approaches to preparing betulic acid:

-Direct extraction and isolation from natural plants. This method consumes a lot of solvent, has low yields, and is difficult to completely separate impurities, making it less commonly used in industrial production.

-Preparation through organic synthesis using betulin as a precursor. This process is mature and stable, has been achieved on an industrial scale, and is currently the mainstream source in the market.

-Production through microbial conversion using betulin as a precursor. This route represents a future direction for green production, but several technical bottlenecks remain to be overcome.

Studies have shown that betulinic acid and its derivatives have significant biological activity in anti-oxidative stress and immune regulation. They have been regarded as a class of natural lead compounds with important development potential and have broad application prospects in the fields of medicine and functional raw materials.

Pentacyclic triterpenes generally exhibit anti-inflammatory activity. Betulic acid exhibits a mild anti-inflammatory effect at higher concentrations. Its mechanism of action may be related to inhibition of protein kinase C, rather than neurogenic inflammatory pathways. Studies have also suggested that its activity stems from interaction with glucocorticoid receptors.

The anti-inflammatory effects of this ingredient have been validated in various in vitro and in vivo studies. Betulic acid can inhibit the production of prostaglandin E2 (PGE2), thereby alleviating inflammatory responses.

Studies have shown that betulic acid has some inhibitory activity against common strains of Escherichia coli, Bacillus subtilis, and Staphylococcus aureus, but its overall antibacterial activity is relatively weak. This is related to the structural characteristics of its lupane-type pentacyclic triterpenes, which are similar to hopanes found on bacterial membranes, potentially affecting its antibacterial efficacy. Currently, its potential for direct development as an antibacterial agent is limited.

Btulic acid exhibits broad antiviral activity, particularly against HIV. It has also demonstrated efficacy against hepatitis C virus, herpes simplex virus, echovirus, and influenza virus.

Research has shown that betulinic acid and its derivatives can exert antihyperlipidemic effects by regulating adipokine secretion, inhibiting lipid production, and lowering triglyceride and total cholesterol levels in the blood.

Btulinic acid exhibits potential value in the prevention and treatment of diabetes. It primarily acts by inhibiting the activity of α-amylase and α-glucosidase, reducing polysaccharide hydrolysis, and promoting glycogen synthesis, thereby regulating blood sugar.

Btulinic acid has protective effects on normal tissues, which is closely related to its ability to resist oxidative stress. Experimental studies have shown that it has protective effects against ischemia-reperfusion injury in organs such as the brain, kidneys, and heart. Its mechanisms of action involve multiple pathways, including resistance to oxidative stress, resistance to nitrosative stress, and increased local blood flow.

Recent studies have found that betulinic acid has a beneficial effect on neurodegenerative diseases such as Alzheimer's disease, alleviating neurobehavioral and cognitive impairments, reducing pro-inflammatory cytokine levels in the hippocampus, and inhibiting oxidative and nitrosative stress.

Other studies have also shown that betulinic acid has anxiolytic activity. Its high lipid solubility allows it to cross the blood-brain barrier, and this ingredient is currently used in some anti-anxiety preparations.