Contributions to the Chemistry of the Plant Cell Wall. Vii. The Cellulose in the Rhizomes of Brake Fern (Pteris Aquilina)

Harlow, William M.; Wise, Louis E.

doi:10.1002/j.1537-2197.1938.tb09208.x

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…The second group comprises the cell wall polysaccharides. Of these cellulose (which in bracken is similar in structure to that of other plants) (Harlow & Wise, 1938) stands alone as it is believed t o be synthesized in situ in the cell wall (Nikaido & Hassid, 197 1); the remaining matrix polysaccharides, within which the cellulose network is embedded, are apparently synthesized within the Golgi apparatus and then transported to their eventual location (Northcote, 1972), although this has only been demonstrated for the pectic substances and the xylans. Of the matrix materials in bracken the two main hemicellulose components are a galactoglycomannan and an acidic xylan, both of which have been characterized in detail (Bremner & Wilkie, 1966) and shown to be intermediate in structure between those found in the angiosperms and in the gymnosperms.…”

Section: Carbohydrate Compositionmentioning

confidence: 99%

Nucleotides and related compounds in bracken

Duncan

Jarvis

1976

Botanical Journal of the Linnean Society

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The role of sugar nucleotides in polysaccharide synthesis is discussed. The presence of acid soluble nucleotides in bracken rhizomes was demonstrated (20 μmol/kg fresh weight) and the uridine series was shown to predominate accounting for some 80% of the total. The following were identified, UDP‐glucose (60%), UDP‐galactose (15%), UDP‐xylose (9%), UDP‐arabinose (3%), UDP‐glucuronic acid (4%), GDP‐mannose (6%) and GDP‐fucose (3%). It is probable that these sugar nucleotides supply the full complement of sugars identified in the carbohydrate fractions of bracken.

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Section: Carbohydrate Compositionmentioning

confidence: 99%

Nucleotides and related compounds in bracken

Duncan

Jarvis

1976

Botanical Journal of the Linnean Society

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“…Since studies carried out by Harlow and Wise (1938) and Wise et al (1939), MEA has been known to be a very selective delignifying agent. As early as 1940 Peterson and Wise filed two patent applications concerning the pulping of wood with MEA and MEA-related substances in autoclaves.…”

Section: Introductionmentioning

confidence: 99%

Monoethanolamine (MEA) pulping of beech and spruce wood for production of dissolving pulp

Claus¹,

Kordsachia²,

Schröder

et al. 2004

Holzforschung

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Delignification with the use of monoethanolamine (MEA) is an innovative, environmentally friendly chemical pulping process that, in contrast to conventional pulping methods, works without the use of sulphur compounds. Of particular benefit is the simple MEA recovery by distillation, allowing black liquor combustion to be dispensed with and the dissolved lignin to be gained. The MEA process is suitable for pulping both hardwood (e.g. beech) and softwood (e.g. spruce). Compared with conventional processes, the MEA process has the advantage of achieving a high degree of delignification through an increase in temperature during pulping without any appreciable damage to the cellulose. When manufacturing dissolving pulps, however, this specific selectivity of MEA requires the removal of the hemicelluloses in an additional stage, preferably by acid prehydrolysis. The conditions of this prehydrolysis step must be selected specifically to be in keeping with the ultimate use of the dissolving pulp, as this stage involves the cellulose chains being chemically attacked. The residual lignin is removed after pulping in a sequence of different bleaching stages. Substituting MEA for the sodium hydroxide solution required as a bleaching alkali in the oxygen delignification stage proves to be especially beneficial, as in this case the COD after bleaching can be considerably reduced by treating the bleaching filtrate from this stage jointly with the effluents from the MEA pulping process.

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Contributions to the Chemistry of the Plant Cell Wall. Viii. The Cellulose in Hair Cap Moss

Harlow

Wise

1938

American J of Botany

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Contributions to the Chemistry of the Plant Cell Wall. Vii. The Cellulose in the Rhizomes of Brake Fern (Pteris Aquilina)

Cited by 5 publications

References 2 publications

Nucleotides and related compounds in bracken

Nucleotides and related compounds in bracken

Monoethanolamine (MEA) pulping of beech and spruce wood for production of dissolving pulp

Contributions to the Chemistry of the Plant Cell Wall. Viii. The Cellulose in Hair Cap Moss

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