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Melezitose, also spelled melicitose, is a nonreducing trisaccharide sugar
Sugar

Sugar is a class of edible crystalline substances, mainly sucrose, lactose, and fructose. Human taste buds interpret its flavor as sweet. Sugar as a basic food carbohydrate primarily comes from sugar cane and from sugar beet, but also appears in fruit, honey, sorghum, sugar maple , and in many other sources....
 that is produced by many plant sap
Plant sap

Sap is a fluid transported in xylem cells or phloem sieve tube elements of a plant. Fluid found in the vacuoles of other cells is sometimes referred to as "cell sap"....
 eating insects, including aphid
Aphid

Aphids, also known as plant lice , are small plant-eating insects, and members of the Taxonomic rank Aphidoidea. Aphids are among the most destructive insect pests on cultivated plants in temperate regions....
s such as Cinara pilicornis by an enzyme reaction. This is beneficial to the insects, as it reduces the stress of osmosis
Osmosis

Osmosis is the diffusion of a solvent through a Semipermeable membrane, from a solution of low solute concentration to a solution with high solute concentration , up a solute concentration gradient....
 by reducing their own water potential. The melezitose is part of the honeydew
Honeydew (secretion)

Honeydew is a sugar-rich sticky substance, secreted by aphids and some scale insects as they feed on plant sap. When their mouthpart penetrates the phloem, the sugary, high-pressure liquid is forced out of the gut's terminal opening....
 which acts as an attractant for ants and also as a food for bee
Bee

Bees are flying insects closely related to wasps and ants. Bees are a monophyly lineage within the superfamily Apoidea, presently classified by the unranked taxon name Anthophila....
s.






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Melezitose, also spelled melicitose, is a nonreducing trisaccharide sugar
Sugar

Sugar is a class of edible crystalline substances, mainly sucrose, lactose, and fructose. Human taste buds interpret its flavor as sweet. Sugar as a basic food carbohydrate primarily comes from sugar cane and from sugar beet, but also appears in fruit, honey, sorghum, sugar maple , and in many other sources....
 that is produced by many plant sap
Plant sap

Sap is a fluid transported in xylem cells or phloem sieve tube elements of a plant. Fluid found in the vacuoles of other cells is sometimes referred to as "cell sap"....
 eating insects, including aphid
Aphid

Aphids, also known as plant lice , are small plant-eating insects, and members of the Taxonomic rank Aphidoidea. Aphids are among the most destructive insect pests on cultivated plants in temperate regions....
s such as Cinara pilicornis by an enzyme reaction. This is beneficial to the insects, as it reduces the stress of osmosis
Osmosis

Osmosis is the diffusion of a solvent through a Semipermeable membrane, from a solution of low solute concentration to a solution with high solute concentration , up a solute concentration gradient....
 by reducing their own water potential. The melezitose is part of the honeydew
Honeydew (secretion)

Honeydew is a sugar-rich sticky substance, secreted by aphids and some scale insects as they feed on plant sap. When their mouthpart penetrates the phloem, the sugary, high-pressure liquid is forced out of the gut's terminal opening....
 which acts as an attractant for ants and also as a food for bee
Bee

Bees are flying insects closely related to wasps and ants. Bees are a monophyly lineage within the superfamily Apoidea, presently classified by the unranked taxon name Anthophila....
s. This is useful to the lice as they have a symbiotic relationship with ants. Melezitose can be partially hydrolyzed
Hydrolysis

Hydrolysis is a chemical reaction during which one or more water are split into hydrogen and hydroxide ions which may go on to participate in further reactions....
 to glucose
Glucose

Glucose , a monosaccharide also known as grape sugar, blood sugar, or corn sugar, is a very important carbohydrate in biology....
 and turanose
Turanose

D--Turanose is a Redox disaccharide. Its systematic name is a-D-glucopyranosyl--a-D-fructofuranose. It is an analog of sucrose not Metabolism by Vascular plant, but rather acquired through the action of sucrose transporters for intracellular carbohydrate signaling....
 the latter of which is an isomer
Isomer

In chemistry, isomers are compounds with the same molecular formula but different structural formulae. Isomers do not necessarily share similar properties unless they also have the same functional groups....
 of sucrose
Sucrose

Sucrose is a disaccharide of glucose and fructose, with the molecular formula C12H22O11. Its systematic name is a-D-glucopyranosyl- -?-D-fructofuranoside ....
.