ग्लूकोज से प्राप्त एक ग्लाइकोसाइड

Noun:

ग्लूको-साइड, एक वनस्पति जिसमें अम्ल या क्षार के प्रयोग पर ग्लूकोज या उसके समान पदार्थ लगता है,

glucoside's Usage Examples:

This glucoside is readily hydrolysed by acids or ferments,breaking up into alizarin and glucose: 214 O Ruberythric acid = Glucose+Alizarin.

C6h2(Oh)2[I.2], C]] a vegetable dyestuff formerly prepared from madder root (Rubia tinctorum) which contains a glucoside ruberythric acid (C26H28014).

It occurs naturally in the form of the glucoside amygdalin (C20H27N011), which is present in bitter almonds, cherries, peaches and the leaves of the cherry laurel; and is obtained from this substance by hydrolysis with dilute acids: C20H27N011+2H20 =HCN+2C6H,206+C6H5CHO.

A valuable medicinal glucoside named salicin (q.v.) is also extracted from the bark.

A continuation of their work on bitter almond oil by Liebig and Wohler, who remained firm friends for the rest of their lives, resulted in the elucidation of the mode of formation of that substance and in the discovery of the ferment emulsin as well as the recognition of the first glucoside, amygdalin, while another and not less important and far-reaching inquiry in 'which they collaborated was that on uric acid, published in 1837.

It can be synthetically prepared by the reduction of coniferyl alcohol, (HO) (CH 3 O) C6H3 CH :CH CH20H, which occurs in combination with glucose in the glucoside coniferin, C16H2208.

It is found in the volatile oils of Spiraea, and can be obtained by the oxidation of the glucoside salicin, (C13H1807), which is found in willow bark.

Glucoside >>

It appears to be synthesized in the plant tissues from carbon dioxide and water, formaldehyde being an intermediate product; or it may be a hydrolytic product of a glucoside or of a polysaccharose, such as cane sugar, starch, cellulose, 'c. In the plant it is freely converted into more complex sugars, poly-saccharoses and also proteids.

The enzymes which act upon glucosides are many; the best known are emul sin and myrosin, which split up respectively amygdalin, the special glucoside of certain plants of the Rosaceae; and sinfgrin, which has a wide distribution among those of the Cruciferae.

glucoside's Meaning':

a glycoside derived from glucose