Сверхкритические флюиды. Теория и практика
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2016, N2, pp. 53-62

K.G. Bogolitsyn, M. A. Gusakova, A.A. Krasikova, A. D. Ivakhnov, S.S. Khviuzov, D.G. Chukhchin, I.N. Zubov

Supercritical Fluid Extraction as a Method of Thermochemical Activation of Wood Cell Walls

Thermochemical activation of lignocellulose matrix in the course of supercritical fluid (SC) extraction is studied and changes of chemical composition and morphology of the wood substance determined. A high heterogeneity of the wood substance structure is demonstrated that is revealed in the presence of labile and stable regions of lignincarbohydrate formations distributed in the cell wall and the middle lamellae. A new data about chemical composition and morphological features of the wood substance and its components can be obtained via the directed impact onto weak H-bonds of lignincarbohydrate complex in the SC-CO2 medium.

Key words: thermodynamic compatibility, cell wall, supercritical fluid extraction, lignin-carbohydrate matrix, wood substance, thermochemical activation

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