Structure of galactoglucomannan from Populus monilifera H.

Kubačková, M.; Karácsonyi, Š.; Bilisics, L.

doi:10.1016/0144-8617(92)90122-7

Cited by 21 publications

(5 citation statements)

References 14 publications

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“…The presence of β-1,4-Glc in the backbone was confirmed by anomeric NMR signals at 4.45 and 102.5 ppm, which COSY showed to be coupled to β-1,4-Glc H-2 at 3.30 ppm. The anomeric values are in good agreement with those reported for β-1,4-linked mannose residues , and with previous assignments for galactoglucomannan …”

Section: Resultssupporting

confidence: 91%

“…The C-6 13 C resonance is in good agreement with β- d -mannopyranosyl residues unbranched at the 6-OH, as branching at this position tends to shift the signal upfield to 67.4 ppm . Other HSQC signals were assigned for H-3/C-3 (3.74, 71.5 ppm), H-4/C-4 (3.75, 77.0 ppm), and H-5/C-5 (3.50, 75.0 ppm) on the basis of published assignments. ,, …”

Section: Resultsmentioning

confidence: 68%

“…The ratio between mannose and glucose residues reported for other softwood glucomannans also varies, such as Norway spruce between 3.5 and 4:1 − , red cedar 2.5:1, western hemlock 3:1, , loblolly pine 2.7:1, Scots pine 3.1−3.7:1, and Sitka spruce 2.5:1 . Other reports of softwood GGM have included those from red pine, southern pine, white spruce, and poplar …”

Section: Introductionmentioning

confidence: 99%

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Galactoglucomannan Oligosaccharides (GGMO) from a Molasses Byproduct of Pine (Pinus taeda) Fiberboard Production

Price

Hartman

Faber

et al. 2011

J. Agric. Food Chem.

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"Temulose" is the trade name for a water-soluble molasses produced on a large scale (300-400 tonnes per year) as a byproduct of the fiberboard industry. The feedstock for Temulose is predominantly a single species of pine ( Pinus taeda ) grown and harvested in stands in southeastern Texas. Because of the method of production, the molasses was predicted to consist of water-soluble hemicelluloses, mainly arabinoxylan-type and galactoglucomannan-type oligosaccharides, plus minor components of lignin, but no detailed structural study had been reported. The structure and composition of the molasses has now been deduced by a combination of MALDI-TOF mass spectrometry, size exclusion chromatography, proton and (13)C NMR techniques, and classic carbohydrate analysis. Limited acid hydrolysis released a series of galactoglucomannan oligosaccharides (GGMO) that were selectively recovered from the acid-labile arabinogalactan by precipitation with ethanol. The precipitate was named "Temulose brown sugar" because of its appearance, and is shown to consist of GGMO with a degree of polymerization (DP) from 4 to 13, with the major component being DP 5-8. The structure of these oligosaccharides is a β-1,4-linked backbone of Man and Glc residues, with occasional α-1,6 branching by single galactosyl units.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Galactoglucomannan Oligosaccharides (GGMO) from a Molasses Byproduct of Pine (Pinus taeda) Fiberboard Production

Price

Hartman

Faber

et al. 2011

J. Agric. Food Chem.

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“…1. Galactoglucomannan-derived oligosaccharides were obtained from poplar galactoglucomannan by partial acid hydrolysis and purified by gel-permeation and paper chromatography as described previously (Kuba6kov~ et al 1992 (1988) with some modifications. Prior to excision, seedlings were sterilized in SAVO (commercial bleach 20%, v/v; Lachema, Brno, Czech Republic) for 10 min and rinsed three times in sterile distilled water.…”

Section: Methodsmentioning

confidence: 99%

Effect of galactoglucomannan-derived oligosaccharides on elongation growth of pea and spruce stem segments stimulated by auxin

Auxtová

Lišková

Kákoniová

et al. 1995

Planta

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Abstract. Galactoglucomannan-derived oligosaccharides (GGMOs) (degree of polymerization 4-8) isolated from the wood of poplar (Populus monilifera Ait.) were shown to be inhibitors of the 2,4-dichlorophenoxyacetic acid-stimulated elongation growth of pea (Pisum sativum L. cv. Tyrkys) and spruce [Picea abies (L.) Karst] stem segments. A dependence on the concentration of GGMOs (between 10-5-10-1OM) as well as plant species was ascertained. Pea stem segments were much more sensitive (10-1OM) than spruce (10-8M). The GGMOs did not exhibit toxicity even at high concentrations and during long-term bioassays. The timing of the action of GGMOs and auxin in the growth process was also studied.

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“…Our research is focused on a specific class of oligosaccharide-signaling molecules, galactoglucomannan oligosaccharides (GGMOs), derived from spruce galactoglucomannan (Karácsonyi et al, 1996;Capek et al, 2000). Galactoglucomannans are structural constituents of both the primary and secondary cell walls of higher plants (Kubačková et al, 1992;Lundqvist et al, 2002). Galactoglucomannan polysaccharides may fulfill a role comparable to that of xyloglucans, impacting flexibility and forming growth-constraining networks with cellulose (Schröder et al, 2004).…”

Section: Introductionmentioning

confidence: 99%