Sugars from Sphacelia sorghi honeydew

Mowers, R.L. and Gray, G.R. and Ballou, C.E. (1973) Sugars from Sphacelia sorghi honeydew. Carbohydrate Research, 27 (1). pp. 119-134.

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Several unusual oligosaccharides have been isolated from the honeydew of Sphacelia sorghi McRae. These include 1-O-β-D-fructofuranosyl-D-mannitol, 5-O-β-D-fructofuranosyl-D-arabinitol, 1,6-di-O-β-D-fructofuranosyl-D-mannitol, 1,5-di-O-β-D-fructofuranosyl-D-arabinitol, and 1-O-β-D-fructofuranosyl-6-O-[β-D-fructofuranosyl-(2→6)-β-D-fructofuranosyl]-D-mannitol. In addition to these oligosaccharides, D-glucose, D-fructose, D-arabinitol, D-mannitol, sucrose, and 6-O-β-D-fructofuranosyl-D-glucose were also found in the honeydew. The structures of the previously undescribed oligosaccharides were determined by periodate oxidation studies, their cleavage by β-D-fructofuranosidase, optical rotation measurements, and methylation analysis by combined gas-liquid chromatography-mass spectrometry. The position of linkage in the arabinitol-containing disaccharide was determined by incorporation of D-[1-3H]-arabinitol into a β-D-fructofuranosyl-D-arabinitol in vivo. The release of tritium-labeled formaldehyde during periodate oxidation of the product demonstrated that the β-D-fructofuranosyl moiety was linked to position 5 of the D-[1-3H]-arabinitol

Item Type: Article
Author Affiliation: Department of Plant Pathology Berkeley, Calif. U.S.A.
Subjects: Plant Protection
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 10 Jul 2012 08:08
Last Modified: 10 Jul 2012 08:08
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