The crystalline polymorphism of mannan in plant cell walls and after recrystallisation

Chanzy, H.; Grosrenaud, A.; Vuong, R.; Mackie, William

doi:10.1007/bf00398722

Cited by 61 publications

(68 citation statements)

References 20 publications

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“…Furthermore, mannan is also found in some red algae, such as Porphyra umbilicalis (Jones, 1950). In some of these algae, mannan is the main structural polymer and displays microfibrillar morphology (Chanzy, Grosrenaud, Vuong, & Mackie, 1984).…”

Section: Mannansmentioning

confidence: 99%

Non-starch polysaccharides and their role in fish nutrition – A review

et al. 2011

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Section: Mannansmentioning

confidence: 99%

Non-starch polysaccharides and their role in fish nutrition – A review

et al. 2011

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“…It was shown that with mannan and glucomannan polymers, the mannan I structure was obtained more easily with low molecular weight material, whereas mannan II corresponded to higher molecular weight (4,8). A close resemblance exists thus between the crystallization of cellulose IV^ and mannan I as with both polymers, the crystallization phenomena appear to be directed by related parameters.…”

Section: Discussionmentioning

confidence: 83%

“…This is in particular described in the case of mannan and glucomannan polymers (4,8) where crystals of mannan I are usually obtained with low degree of polymerization (DP) material, whereas only mannan II is found when higher DP are recrystallized.…”

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confidence: 95%

Polymorphic and Morphological Aspects of Recrystallized Cellulose as a Function of Molecular Weight

Quenin

Chanzy

1987

ACS Symposium Series

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The polymorphism and morphology of cellulose precipitated from solutions in amine oxide by the slow diffusion of water vapors, was investigated, as functions of the temperature of recrystallization and the degree of polymerization(DP) of the material to be recrystallized. At temperatures around 90°C, low DP cellulose crystallized almost exclusively as cellulose IV II , whereas higher DP material was found in the form of cellulose II. Substantial differences were also found in the morphologies of the various samples: with cellulose II, rod-like crystals were obtained with low DP material while a crystalline fibrillar gel precipitated when high DP samples were recrystallized. In all cases, cellulose IV II was obtained as a granular precipitate.The crystallization behaviour of polysaccharides is influenced not only by their chain conformation but also by the multiple possibilities of inter and intra molecular hydrogen bonding (1,2). This multiplicity, in particular, explains why several polymorphic forms can be obtained when different crystallization conditions are selected for a given specimen.A survey of the various parameters which have a role in directing the crystallization of a given polysaccharide toward one or another polymorph, presents the temperature of crystallization as being the most influential: polysaccharides such as cellulose (3), mannan (4), dextran (5,6), etc. are particularly sensitive to changes in crystallization temperatures as they yield completely different crystals at low or high temperature.In other instances, it is the solvent of crystallization which plays a decisive role in orienting the crystallization toward one or the other polymorph. Such solvent dependant crystallization is well documented in the case of amy lose (7) where minute changes in solvent/precipitant ratio have a dramatic effe ct on shifting the recrystallized amylose among three polymorps: amylose A,Β and V.

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“…Adsorption experiments were performed in 50 mM sodium acetate buffer, pH 4.0, using 0.1% cellulose, xylan, mannan, arabinan, or chitin. These insoluble carbohydrates were prepared as described elsewhere (3,9,44,49,52). The protein concentrations in the additive solutions were calculated from the absorbance at 420 nm (ε 420 ϭ 130 mM remove the precipitates completely, and the protein concentrations in the supernatants were determined again.…”

Section: Methodsmentioning

confidence: 99%

Characterization of Carbohydrate-Binding Cytochromeb₅₆₂from the White-Rot FungusPhanerochaete chrysosporium

Yoshida

Igarashi

Wada

et al. 2005

Appl Environ Microbiol

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cDNA encoding a hemoprotein similar to the cytochrome domain of extracellular flavocytochrome cellobiose dehydrogenase (CDH) was cloned from the white-rot fungus Phanerochaete chrysosporium. The deduced amino acid sequence implies that there is a two-domain structure consisting of an N-terminal cytochrome domain and a C-terminal family 1 carbohydrate-binding module (CBM1) but that the flavin-containing domain of CDH is not present. The gene transcripts were observed in cultures in cellulose medium but not in cultures in glucose medium, suggesting that there is regulation by carbon catabolite repression. The gene was successfully overexpressed in Pichia pastoris, and the recombinant protein was designated carbohydrate-binding cytochrome b 562 (CBCyt. b 562 ). The resonance Raman spectrum suggested that the heme of CBCyt. b 562 is 6-coordinated in both the ferric and ferrous states. Moreover, the redox potential measured by cyclic voltammetry was similar to that of the cytochrome domain of CDH. These results suggest that the redox characteristics may be similar to those of the cytochrome domain of CDH, and so CBCyt. b 562 may have an electron transfer function. In a binding study with various carbohydrates, CBCyt. b 562 was adsorbed with high affinity on both cellulose and chitin. As far as we know, this is the first example of a CBM1 connected to a domain without apparent catalytic activity for carbohydrate; this CBM1 may play a role in localization of the redox protein on the surface of cellulose or on the fungal sheath in vivo.

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The crystalline polymorphism of mannan in plant cell walls and after recrystallisation

Cited by 61 publications

References 20 publications

Non-starch polysaccharides and their role in fish nutrition – A review

Non-starch polysaccharides and their role in fish nutrition – A review

Polymorphic and Morphological Aspects of Recrystallized Cellulose as a Function of Molecular Weight

Characterization of Carbohydrate-Binding Cytochromeb₅₆₂from the White-Rot FungusPhanerochaete chrysosporium

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The crystalline polymorphism of mannan in plant cell walls and after recrystallisation

Cited by 61 publications

References 20 publications

Non-starch polysaccharides and their role in fish nutrition – A review

Non-starch polysaccharides and their role in fish nutrition – A review

Polymorphic and Morphological Aspects of Recrystallized Cellulose as a Function of Molecular Weight

Characterization of Carbohydrate-Binding Cytochromeb562from the White-Rot FungusPhanerochaete chrysosporium

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Product

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Characterization of Carbohydrate-Binding Cytochromeb₅₆₂from the White-Rot FungusPhanerochaete chrysosporium