The fate of cellulose and lignin in peats: an exploratory study of the input to coalification Export

@article{Given1984, abstract = {The plant organs that give rise to preserved tissue in peats are often composed chiefly of cells with cellulosic (unlignified) walls, which frequently retain the birefringence characteristic of cellulose. Yet unaltered polymeric cellulose is present in very low concentration and, if inserted into peat as cotton, is rapidly destroyed. Our objective is to resolve this paradox and also identigy chemical changes undergone by any lignin that escapes depolymerization. Cores of peat from four environments in the Florida Everglades and one in Okefenokee Swamp (Georgia) are being studied. Size separation of peat from various depths by slurrying in water and passing through an 80 mesh sieve is an effective method of segregating rootlets and other plant tissue from fine-grained humic matter. In most cases, the various plant tissue fragments seem to consist chiefly of the principal plant polymers (cellulose and lignin), though these are somewhat oxidized and cellulose tends to decrease with depth. The fine-grained humic matter contains more or less the same structural features as the plant polymers, but shows bands of different shapes and relative intensities. In the case of the Cypress peat (only), the spectra of coarse and fine materials are quite similar. Thus there is evidence that cellulose does survive in some peats and that the polymers can be somewhat altered without destruction of cellular morphology.}, author = {Given, P. and Spackman, W. and Painter, P. and Rhoads, C. and Ryan, N. and Alemany, L. and Pugmire, R.}, citeulike-article-id = {3687214}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/0146-6380(84)90062-7}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/0146638084900627}, doi = {10.1016/0146-6380(84)90062-7}, issn = {01466380}, journal = {Organic Geochemistry}, keywords = {biodegradation, cellulose, coalification, degradation, diagenesis, formation, kerogen, lignin}, pages = {399--407}, posted-at = {2008-11-25 14:58:42}, priority = {2}, title = {The fate of cellulose and lignin in peats: an exploratory study of the input to coalification}, url = {http://dx.doi.org/10.1016/0146-6380(84)90062-7}, volume = {6}, year = {1984} }

TY - JOUR ID - Given1984 L3 - citeulike-article-id:3687214 N2 - The plant organs that give rise to preserved tissue in peats are often composed chiefly of cells with cellulosic (unlignified) walls, which frequently retain the birefringence characteristic of cellulose. Yet unaltered polymeric cellulose is present in very low concentration and, if inserted into peat as cotton, is rapidly destroyed. Our objective is to resolve this paradox and also identigy chemical changes undergone by any lignin that escapes depolymerization. Cores of peat from four environments in the Florida Everglades and one in Okefenokee Swamp (Georgia) are being studied. Size separation of peat from various depths by slurrying in water and passing through an 80 mesh sieve is an effective method of segregating rootlets and other plant tissue from fine-grained humic matter. In most cases, the various plant tissue fragments seem to consist chiefly of the principal plant polymers (cellulose and lignin), though these are somewhat oxidized and cellulose tends to decrease with depth. The fine-grained humic matter contains more or less the same structural features as the plant polymers, but shows bands of different shapes and relative intensities. In the case of the Cypress peat (only), the spectra of coarse and fine materials are quite similar. Thus there is evidence that cellulose does survive in some peats and that the polymers can be somewhat altered without destruction of cellular morphology. JF - Organic Geochemistry SN - 01466380 EP - 407 TI - The fate of cellulose and lignin in peats: an exploratory study of the input to coalification VL - 6 SP - 399 KW - biodegradation KW - cellulose KW - coalification KW - degradation KW - diagenesis KW - formation KW - kerogen KW - lignin AU - Given, P AU - Spackman, W AU - Painter, P AU - Rhoads, C AU - Ryan, N AU - Alemany, L AU - Pugmire, R PY - 1984/// UR - http://dx.doi.org/10.1016/0146-6380(84)90062-7 ER -