Email this article Thermogravimetry in intraspecific physico-chemical differentiation study of Siberian spruce (Picea obovata L.)
- Authors: Loskutov S.R.1, Kazaryan L.K.1, Aniskina A.A.1, Shapchenkova O.A.1, Permyakova G.V.1, Efremov S.P.1, Pimenov A.V.1
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Affiliations:
- Sukacev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center" SB RAS
- Issue: Vol 29, No 6 (2025)
- Pages: 135-146
- Section: Wood processing and chemical processing of wood
- Published: 15.12.2025
- URL: https://journals.eco-vector.com/2542-1468/article/view/706262
- DOI: https://doi.org/10.18698/2542-1468-2025-6-135-146
- ID: 706262
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Abstract
The article studies the thermal analysis of the postextraction needles’ residue (lignocarbon complex, PERN) from six spruce populations growing on the eastern macroslope of the Kuznetsk Alatau. The populations are orographically isolated from each other and differ in their morphological and taxation characteristics. The aim of the study is to establish the presence (or absence) of the physico-chemical variability of the lignocarbon complex as a biochemical polymer «framework» of needles. Using the methods of thermogravimetry (TG) and differential thermogravimetry (DTG), the thermo-oxidative degradation of PERN populations was investigated: a comparative analysis of the kinetics of the process, its «micro staging» according to the fourth derivatives of DTG contour and the analysis of mass loss profiles when heated from 20 to 700 °C at a rate of 10 °C/min. An analysis of the basic data on TG and DTG, the kinetics of thermal shock, and the relative structure of PERN revealed no significant differences between populations: the average values of the apparent activation energy of the entire thermal decomposition process are little changed. The values of the Shannon and Margalef variability indices and the parameter of projective invariance of experimental spruce populations at the level of the PERN lignocarbon complex are calculated. The values of these parameters indicate poor intraspecific chemical diversity at the level of the lignocarbon complex of P. obovata L. needles. Further studies of experimental objects will be devoted to the analysis of the component composition of the terpene in needles P. obovata L.
Keywords
About the authors
Sergey R. Loskutov
Sukacev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center" SB RAS
Email: lsr@ksc.krasn.ru
Dr. Sci. (Chem.), Fellow of the IAWS, Chief Researcher
Russian Federation, 50/28, Akademgorodok, 660036, KrasnoyarskLilit K. Kazaryan
Sukacev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center" SB RAS
Email: kazaryan.lk@ksc.krasn.ru
Junior Researcher
Russian Federation, 50/28, Akademgorodok, 660036, KrasnoyarskAntonina A. Aniskina
Sukacev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center" SB RAS
Author for correspondence.
Email: aniskina_a@ksc.krasn.ru
Research Assistant
Russian Federation, 50/28, Akademgorodok, 660036, KrasnoyarskOlga A. Shapchenkova
Sukacev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center" SB RAS
Email: sholga@ksc.krasn.ru
Cand. Sci. (Biology), Senior Scientist
Russian Federation, 50/28, Akademgorodok, 660036, KrasnoyarskGalina V. Permyakova
Sukacev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center" SB RAS
Email: permyakova.gv@ksc.krasn.ru
Research Assistant
Russian Federation, 50/28, Akademgorodok, 660036, KrasnoyarskStanislav P. Efremov
Sukacev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center" SB RAS
Email: efr2@ksc.krasn.ru
Dr. Sci. (Biology), Chief Researcher
Russian Federation, 50/28, Akademgorodok, 660036, KrasnoyarskAleksandr V. Pimenov
Sukacev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center" SB RAS
Email: pimenov@ksc.krasn.ru
Dr. Sci. (Biology), Deputy Director of the Institute for Scientific Work
Russian Federation, 50/28, Akademgorodok, 660036, KrasnoyarskReferences
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