Birch tree

Betula mandshurica (Regel) Nakai B. platyphylla Suk. Bai Hua (White birch tree) (bark, tree sap) Betuloside, betulafolienetriol, betulafolienetetraol, betulin.48-50 Anticancer, mammary carcinoma. 

Source mushroom Amanita muscaria (fly agaric) found in north temperate climates in wooded areas especially around birch trees... 

Among 383 patients with food allergy, 37% revealed positive reaction to hazelnut (Etesamifar and Wiithrich 1998), and among pollen-allergic patients as much as 53% (Eriksson et al. 1982). In the areas where birch trees are endemic, hazelnut allergy is most often manifested as mild OAS, both in children and in adults (Cudowska and Kaczmarski 2004). However, the route of clinically relevant sensitization to hazelnut in children can be nonpollen related (Flinterman et al. 2006). Children can be sensitized to hazelnut at an early age. In many cases, reactions are very serious and frequently correlated with sensitivity to peanut or other tree nuts (Pumphrey et al. 1999). So far it has not been univocally settled which major allergens, and of which kind of nut, are responsible for the primary sensitization in children with objective reactions to hazelnuts. 

Mogensen, J.E., Ferreras, M., Wiiruner, R. et al. 2007. The major allergen from birch tree pollen, Bet v 1, binds and permeabilizes membranes. Biochemistry 46 3356-3365. 

Cirelli, D., Jagels, R., and Tyree, M. T. (2008). Towards an improved model of maple sap exudation The location and role of osmotic barriers in sugar maple, butternut and white birch. Tree Physiol. 28,1145-1155. 

Irina, sixties, Berezka (Birch Tree) dacha community... 

Ludwig et al. (1978) estimate that r = 1 for a fully mature forest, which lies dangerously in the outbreak region. After an outbreak occurs, the fir trees die and the forest is taken over by birch trees. But they are less efficient at using nutrients and eventually the fir trees come back—this recovery takes about 50-100 years (Murray 1989). 

The tinder fungus Fames fomentarius, which grows on both beech and birch trees, gives a deep red colour in alkali. This is associated with the presence of fomentariol (7.31), a purpurogallin type of oxidation product of trihydroxy-cinnamyl alcohol. 

Most antifeedants are not as active as the available pesticides, so that they would have to be used at higher levels. They would work best if they were systemic to protect the growing tip of the plant. The supply from natural sources might not be large enough for crop use in many cases. The antifeedant derived from betulin from the bark of birch trees (Betula papyrifera,) shown in 11.25 is potentially available in large supply.140... 

A plant-derived compound with a long history is the lupane-type triterpene, betulinic acid (53), which has been isolated from many taxonomically diverse plant genera. " A major source is the birch tree, Betula spp., which is also a primary source of its C-28 alcohol precursor, betulin, the isolation of which was first reported in 1788. 

An extract from the hard, scurrilous blackish knobs from the trunks of the birch tree can be taken to retard the growth of advanced cancers, and to reduce the pain. 

Products and Uses Derived from the birch tree or from other wood pulp. It is a nutritive sweetener used in gum, candies, and breath mints. It was recently reported by researchers in Finland that regular doses of the natural sweetener re-... 

Definition Sap of the birch tree, Betula alba Uses Skin protectant in cosmetics Birch (Betula pendula) tar oil CAS 8001-88-5... 

The secondary cell wall grows after the primary cell wall is formed. It contains various amounts of cellulose, depending on the plant about 93% for cotton seed hair, 53% in trunks of the aspen tree, 41 % in the birch tree trunks, 50% in wheat straw, 26% in clover, and 52% in soy bean shells. 

Polyporanic acid, polyporenic acid A a tetracyclic triterpene carboxylic acid. A/, 486.74, m.p. 200°C, [ ]d + 74°. P a. is structurally related to 5a-lanostane (see Lanosterol). It occurs in the fungus Polypoms spp. growing on birch trees. 

Another sweetener with some similarities to sorbitol is xylitol. Xylitol is a natural poly alcohol that can be isolated from sources such as birch trees and fibers of corn husks. Xylitol is used for some of the same reasons as sorbitol xylitol can be consumed safely by diabetics and is even more effective than sorbitol in preventing cavities in teeth. However, it is more expensive than sorbitol and there is anecdotal evidence that xylitol is toxic in dogs. 

TLC has played a significant part in research on the biosynthesis and metabolism of steroids and bile acids [255, 377, 444], gibberellins [243], macrolides [7] and aromatic carboxylic acids [253,254]. Austrian research workers reported its use in studies of the biogenesis of lignin [381, 382] already in 1960. They injected coniferin-3- C into the branches of a birch tree and, with the help of TLC, isolated two radioactive... 

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