Melezitose

• Melecitose
• Melezitose
• O- α -D - Glcp (1,3) -O -D appears, in fact (2,1 )-D- Glcp
• O- α -D - glucopyranosyl - (→ 3) - O- β -D - fructofuranosyl -(2 → ) - α -D -glucopyranoside

• C18H32O16
• C18H32O16 · H2O (monohydrate)

White, odorless solid

• 504.44 g.mol -1
• 522.5 g · mol -1 ( monohydrate)

Fixed

155-160 ° C

Template: Infobox chemical / molecular formula search available

Melezitose is a type of sugar that is found in about honeydew, a sugary excretion product of various Hemiptera ( Hemiptera ), which include about the aphids ( Aphidina ). These insects synthesize sugar from sucrose and glucose, lose less water by osmosis and attract both ants as protectors of.

Melezitose as all kinds of sugar a carbohydrate and more particularly to a trisaccharide ( triple sugar) from two molecules of glucose and one molecule of fructose. They hydrolyzed under mild conditions to glucose and turanose, an isomer of sucrose.

History

Was first held in 1833 Bonastre melezitose in an extract of the larch. The name was derived from the French word " larch " for the larch. Later they had the sugar in other plants and 1917 in honey.

Melezitose in honey

Forest honey from the apiary, to win the bees from honeydew, sometimes contains a lot of melezitose. This honey, known as melezitose or cement honey, crystallized honey already in the space of the bee colony from the bottom of the honeycomb cell from her. It can be difficult or impossible to be thrown out, and once the melezitose content in honey of a wintering people exceeds 10% may suffer a severe population loss.