Arabinose have eight kinds of isomers, such as beta - D - arabinose, beta - L - arabinose, etc. Arab sugar industry product mainly has two kinds: D - Arab sugar can be obtained from degradation of d-glucose, nature is relatively rare, mainly appear in some bacteria polysaccharides.
Natural L - Arab sugar can be made of D - xylose is uridine diphosphate derivatives by enzymatic isomerization reaction to obtain, also from the corn husk hemicellulose Arab xylose is extracted.
Arabinose original system called Arab tree from a secretion of the classics in colloidal complex chemical and physical methods extracted a dextral simple sugars, natural L - arabinose rarely exist in free, in many pine trees in the heartwood of L - Arab sugar containing free state. Widely exists in plants, often combined with other monosaccharides, in the form of heteropoly sugar exist in the colloid, hemicellulose, pectin acid polysaccharide, bacteria and some glycoside.
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