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The comparison of chemical and structural differences of Caribean pine (Pinus caribea L.) wood and bark lignin

Vergleich der chemischen und strukturellen Unterschiede des Holz- und Rindenlignins von Pinus caribea L.

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Abstract

The presented paper deals with some chemical properties of Caribean pine wood and bark lignin. In order to obtain necessary data, the following operations and analyses were performed: dioxane lignin isolations, determination of Klason lignin, determination of methoxyl, carboxyl and phenolic hydroxyl groups in dioxane lignins and the nitrobenzene oxidation of both compared lignins and of the risidues remaining after dioxane lignins extraction. The oxidation products were analysed by GLC. The experimental data show that there are moderate differences between compared lignins.

Zusammenfassung

Bei diesem Beitrag handelt es sich um einen Bericht über einige chemische Eigenschaften des Lignins in Holz und Rinde der karibischen Kiefer. Folgende Analysen wurden vorgenommen: die Isolierung von Dioxan-Lignin, die Bestimmung von Klason-Lignin. Methoxyl-, Carbonyl- und Phenol-Hydroxyl-Gruppen in Dioxan-Ligninen sowie eine Nitrobenzol-Oxidation der beiden verglichenen Lignine und der Rückstände nach der Dioxan-Extraktion. Die Versuchsergebnisse weisen auf leichte Unterschiede zwischen den verglichenen Ligninen hin.

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Authors and Affiliations

  1. Department of Chemistry and Chemical Technology of Wood, University of Forestry and Wood Technology, T.G. Masaryka 24, CS-960 53, Zvolen, Slovakia

    R. Solár, F. Kačk & I. Melcer

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  1. R. Solár
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  2. F. Kačk
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  3. I. Melcer
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Solár, R., Kačk, F. & Melcer, I. The comparison of chemical and structural differences of Caribean pine (Pinus caribea L.) wood and bark lignin. Holz als Roh-und Werkstoff 50, 291–294 (1992). https://doi.org/10.1007/BF02615354

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