Almond tree, gum

The Structure of Almond-tree Gum. Part I. The Constitution of the Aldobionic Acid... 

Prunus amygdalus Almond tree gum. Species of Prunus None of the Prunus... 

Gum arabic (gum acacia) (55-55), black wattle gum (55), egg plum gum, almond tree gum, and peach tree gum Aspen wood 90) y corn-cobs 91)y Western hemlock 91a)... 

Almond Gum Almond gum is obtained as it extrudes from wounds on almond tree Prunus amygdalus (Rosaceae). It is a water-soluble gum. It contains aldo-bionic acid, L-arabinose, L-galactose, D-mannose, etc. [54]. It is soluble in warm water [64]. The gum consists of different components which give emulsifying, thickening,... 

Adulteration.—According to 8. H. Maltass, gum-tragacanth i b adulterated with two inferior gums. These, he says, are collected in Armenia and Cam-mania from various trees, principally wild almond and plum. That from the former locality is sent to Constantinople from Moussul, whence it takes the name of MowsouU. The Caramanion product is sant direct to Smyrna, and is termed Caraman. 

It turned out that many of these aromatic substances have rather simple structures. Many contain a six-carbon unit that passes unscathed through various chemical reactions that alter only the rest of the structure. This group, CgHs—, is common to many substances, including benzaldehyde (isolated from the oil of bitter almonds), benzyl alcohol (isolated from gum benzoin, a balsam resin obtained from certain Southeast Asian trees), and toluene (a hydrocarbon isolated from tolu balsam). When any of these three compounds is oxidized, the QH5 group remains intact the product is benzoic acid (another constituent of gum benzoin). The calcium salt of this acid, when heated, yields the parent hydrocarbon QHg (eq. 4.1). 

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