What does betulin do?
Biological activities Preliminary in vitro studies have shown that betulin demonstrates anti-cancer properties against a variety of tumors. Betulin causes some types of tumor cells to start a process of self-destruction called apoptosis, and can slow the growth of several types of tumor cells.
Is betulin an alcohol?
As is evident, betulin is a pentacyclic triterpene, and the five rings are labeled A–E. This molecule has 10 chiral centers, a primary alcohol at C28, a secondary alcohol at C3, and a 1,1-disubstituted alkene between C20–C29.
Where is betulin found?
Betulin, a pentacyclic triterpene and a plant pentacyclic triterpene metabolite, can be found in large quantities in the outer bark of the birches (Betula, Betulaceae). Betulinic acid, obtained by betulin oxidation, is also abundantly present in nature.
Where does betulinic acid come from?
Betulinic acid (Fig. 28.1) is found in the bark of several species of plants, principally the white birch (Betula pubescens) (Tan et al., 2003). Betulinic acid has very a low water solubility that causes low bioavailability.
What is birch bark good for?
The leaves, bark, and buds of the tree are used to make medicine. Birch is used for joint pain, kidney stones, bladder stones, urinary tract infections (UTIs), and other conditions, but there is no good scientific evidence to support any use.
What does white birch do for skin?
White Birch Extract that is commonly added in cosmetic and personal care formulations to also help sooth sensitive, irritated skin. When it comes to skin care, both the tree sap (aka birch water) and the leaves are valuable, in particular for their ability to reduce inflammation, purify, and hydrate skin.
Is birch a tree?
A birch is a thin-leaved deciduous hardwood tree of the genus Betula (/ˈbɛtjʊlə/), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae.
What is birch bark?
Birch bark or birchbark is the bark of several Eurasian and North American birch trees of the genus Betula. The strong and water-resistant cardboard-like bark can be easily cut, bent, and sewn, which has made it a valuable building, crafting, and writing material, since pre-historic times.
How do you extract betulin from birch bark?
Pressurized hot (subcritical) water and ethanol were used to extract betulin and antioxidants from birch bark. Betulin was found to be the major compound (around 26% (w/w)), which was able to be extracted with ethanol (120 °C, 50 bar, 15 minutes) but not with water at any of the temperatures tested (40–180 °C, 50 bar).
Is betulinic acid water soluble?
The solubility of betulinic acid in water is only about 0.02 μg mL−1 at room temperature. Its solubility in common organic solvents at 25 °C is also fairly low; e.g., 1% (w/v) in ethanol and 5% (w/v) in DMSO.
What foods contain betulinic acid?
The birch tree (Betula spp., Betulaceae) is one of the most widely reported sources of betulinic acid which can be obtained in considerable quantities21-23. Betulinic acid could also be isolated from various sources include Ziziphus spp. (Rhamnaceae)4,17,24, Syzygium spp. (Myrtaceae)1,25, Diospyros spp.
Why does birch bark burn so well?
Betulin is a hydrophobic (water-fearing) molecule – giving birch bark its superior waterproofing abilities. So birch bark is waterproof and flammable — terrific for getting a fire going on a rainy day.