A study of “Chlorite” and “Chlorine” Holocelluloses prepared from<i>Eucalyptus regnans F. v. M.</i>

Koeppen, A. v.; Cohen, W. E.

doi:10.1515/hfsg.1953.7.4.102

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T H E Hemicellulose Fraction and Cell Analysis ( I ) Hemicel1

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1958

2021

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Cited by 3 publications

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“…The method of Wise et al (1946) is usually adopted; this removes the lignin by treatment of the tissue with sodium chlorite in dilute acetic acid. It has been compared quantitatively with other methods and under various conditions by Koeppen & Cohen (1953) and extended to soft tissues by Bennett (1947Bennett ( , 1948 and Jermyn si Isherwood (1956).…”

Section: T H E Hemicellulose Fraction and Cell Analysis ( I ) Hemicelmentioning

confidence: 99%

The Cell Walls of Higher Plants: Their Composition, Structure and Growth

Northcote

1958

Biological Reviews

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Section: T H E Hemicellulose Fraction and Cell Analysis ( I ) Hemicelmentioning

confidence: 99%

The Cell Walls of Higher Plants: Their Composition, Structure and Growth

Northcote

1958

Biological Reviews

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Wood Hemicelluloses: Part I

Timell

1964

Advances in Carbohydrate Chemistry

185

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Effect of delignification on thermal degradation reactivities of hemicellulose and cellulose in wood cell walls

et al. 2021

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The thermal degradation reactivities of cellulose and hemicellulose are substantially different in Japanese cedar (Cryptomeria japonica, a softwood) and Japanese beech (Fagus crenata, a hardwood). Uronic acid and its salts act as acid and base catalysts, respectively, and their specific placement in the cell walls has been considered a factor that influences degradation reactivity. In this study, the role of lignin in degradation reactivity was investigated using holocellulose prepared from cedar and beech woods. The thermal degradation reactivities of cellulose and hemicellulose in holocellulose were evaluated according to the recovery of hydrolyzable sugars from heat-treated samples and compared with those of wood samples. Results show that the reactivities of xylan and glucomannan in both woods became similar to those of the corresponding isolated samples when lignin was removed. By contrast, the cellulose in both woods became more reactive when lignin was removed, and the degradation could be separated into two modes depending on the reactivity. These results were analyzed in terms of the effect of lignin on the matrix of cell walls and the interaction between the matrix and surface molecules of cellulose microfibrils. Differential thermogravimetric curves of the holocellulose samples were obtained and explained in terms of the degradation of hemicellulose and cellulose. The reported findings will provide insights into the research fields of wood pyrolysis and cell wall ultrastructures.

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A study of “Chlorite” and “Chlorine” Holocelluloses prepared fromEucalyptus regnans F. v. M.

Cited by 3 publications

References 0 publications

The Cell Walls of Higher Plants: Their Composition, Structure and Growth

The Cell Walls of Higher Plants: Their Composition, Structure and Growth

Wood Hemicelluloses: Part I

Effect of delignification on thermal degradation reactivities of hemicellulose and cellulose in wood cell walls

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