Melezitose
Chemical compound
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Names | |
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IUPAC name
α-
D
-Glucopyranosyl α-
D
-glucopyranosyl-(1→3)-β-
D
-fructofuranoside
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Systematic IUPAC name
(2
R
,2′
R
,3
R
,3′
R
,4
S
,4′
S
,5
S
,5′
S
,6
R
,6′
R
)-2,2′-{[(2
S
,3
S
,4
R
,5
R
)-4-Hydroxy-2,5-bis(hydroxymethyl)oxolane-2,3-diyl]bis(oxy)}bis[6-(hydroxymethyl)oxane-3,4,5-triol]
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Other names
Melicitose
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Identifiers | |
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3D model (
JSmol
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ChEBI | |
ChEMBL | |
ChemSpider |
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ECHA InfoCard |
100.008.997
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PubChem
CID
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UNII | |
CompTox Dashboard
(
EPA
)
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Properties | |
C 18 H 32 O 16 | |
Molar mass | 504.438 g·mol −1 |
Except where otherwise noted, data are given for materials in their
standard state
(at 25
°C [77
°F], 100
kPa).
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Melezitose , also spelled melicitose , is a nonreducing trisaccharide sugar that is produced by many plant sap eating insects, including aphids such as Cinara pilicornis , by an enzyme reaction. This is beneficial to the insects , as it reduces the stress of osmosis by reducing their own water potential. The melezitose is part of the honeydew which acts as an attractant for ants and also as a food for bees . [1] This is useful to the aphids as they have a symbiotic relationship with ants. Melezitose can be partially hydrolyzed to glucose and turanose the latter of which is an isomer of sucrose .
![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a9/2018-07-11_-_Melezitose_-_3252.jpg/220px-2018-07-11_-_Melezitose_-_3252.jpg)
References
- ↑ Fischer, M. K; Shingleton, A. W (2001). "Host plant and ants influence the honeydew sugar composition of aphids" . Functional Ecology . 15 (4): 544. doi : 10.1046/j.0269-8463.2001.00550.x .
Types of
carbohydrates
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Geometry | |||||||||||||||
Monosaccharides |
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Multiple |
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