Manna

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Chapter: Pharmacognosy and Phytochemistry : Drugs Containing Carbohydrates and Derived Products

It is saccharine exudation obtained from the stem of Fraxinus ornus Linn, belonging to family Oleaceae.


MANNA

 

Biological Source

 

It is saccharine exudation obtained from the stem of Fraxinus ornus Linn, belonging to family Oleaceae.

 

Geographical Source

 

It is small tree widely found in Mediterranean basin and Southern Europe. It is also reported in Spain and commercially cultivated in Sicily.

 

Morphology

 


 


                               Fraxinus ornus


Chemical Constituents

 

Xanthan gum is composed of chiefly D-glucosyl, D-manno-syl and D-glucosyluronic acid residues along with variant quantum of O-acetyl and pyruvic acid acetal. The primary structure essentially comprises of a cellulose backbone with trisaccharide side chains and the repeating moiety being a pentasaccharide.

 

 

Use

 

It is used as a laxative.

 

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