Lignin, the structural polymer of the plant cell walls, is produced by free radical polymerization of phenolic alcohols, catalyzed by different peroxidases. The mechanism and the structural organization of lignin in the cell have not been completely understood. In this study we applied fractal analysis to images of lignin polymer obtained using scanning tunneling microscope. The analysis showed the regularity of the polymer at different levels of organization. According to the results obtained, at the 95% confidence level, there is no significant difference in the fractal dimension between images representing different organizational levels of lignin. In other words, lignin produced in in vitro conditions has fractal structural organization and, consequently the polymer can be expected to be regular in in vivo conditions. The value of the fractal dimension 1.929 +/- 0.021 is in good agreement with the theoretically predicted value for polyaddition and polycondensation mechanism of poly...merization. The mechanism of in vivo lignin synthesis is discussed in terms of various experimental and theoretical evidences. In this paper, we could show that fractal analysis of the lignin polymer is a useful complementary approach to the experimental data collection in structural and phenomenological studies.
TY - JOUR
AU - Radotić, Ksenija
AU - Tasić, M.
AU - Jeremić, M.
AU - Budimlija, Z.
AU - Simić-Krstić, J.
AU - Polzović, A.
AU - Božović, Z.
PY - 2000
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/57
AB - Lignin, the structural polymer of the plant cell walls, is produced by free radical polymerization of phenolic alcohols, catalyzed by different peroxidases. The mechanism and the structural organization of lignin in the cell have not been completely understood. In this study we applied fractal analysis to images of lignin polymer obtained using scanning tunneling microscope. The analysis showed the regularity of the polymer at different levels of organization. According to the results obtained, at the 95% confidence level, there is no significant difference in the fractal dimension between images representing different organizational levels of lignin. In other words, lignin produced in in vitro conditions has fractal structural organization and, consequently the polymer can be expected to be regular in in vivo conditions. The value of the fractal dimension 1.929 +/- 0.021 is in good agreement with the theoretically predicted value for polyaddition and polycondensation mechanism of polymerization. The mechanism of in vivo lignin synthesis is discussed in terms of various experimental and theoretical evidences. In this paper, we could show that fractal analysis of the lignin polymer is a useful complementary approach to the experimental data collection in structural and phenomenological studies.
PB - Slovak Academy of Sciences
T2 - General Physiology and Biophysics
T1 - Fractal analysis of STM images of lignin polymer obtained by in vitro synthesis
EP - 180
IS - 2
SP - 171
VL - 19
UR - https://hdl.handle.net/21.15107/rcub_rimsi_57
ER -
@article{
author = "Radotić, Ksenija and Tasić, M. and Jeremić, M. and Budimlija, Z. and Simić-Krstić, J. and Polzović, A. and Božović, Z.",
year = "2000",
abstract = "Lignin, the structural polymer of the plant cell walls, is produced by free radical polymerization of phenolic alcohols, catalyzed by different peroxidases. The mechanism and the structural organization of lignin in the cell have not been completely understood. In this study we applied fractal analysis to images of lignin polymer obtained using scanning tunneling microscope. The analysis showed the regularity of the polymer at different levels of organization. According to the results obtained, at the 95% confidence level, there is no significant difference in the fractal dimension between images representing different organizational levels of lignin. In other words, lignin produced in in vitro conditions has fractal structural organization and, consequently the polymer can be expected to be regular in in vivo conditions. The value of the fractal dimension 1.929 +/- 0.021 is in good agreement with the theoretically predicted value for polyaddition and polycondensation mechanism of polymerization. The mechanism of in vivo lignin synthesis is discussed in terms of various experimental and theoretical evidences. In this paper, we could show that fractal analysis of the lignin polymer is a useful complementary approach to the experimental data collection in structural and phenomenological studies.",
publisher = "Slovak Academy of Sciences",
journal = "General Physiology and Biophysics",
title = "Fractal analysis of STM images of lignin polymer obtained by in vitro synthesis",
pages = "180-171",
number = "2",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_57"
}
Radotić, K., Tasić, M., Jeremić, M., Budimlija, Z., Simić-Krstić, J., Polzović, A.,& Božović, Z.. (2000). Fractal analysis of STM images of lignin polymer obtained by in vitro synthesis. in General Physiology and Biophysics
Slovak Academy of Sciences., 19(2), 171-180.
https://hdl.handle.net/21.15107/rcub_rimsi_57
Radotić K, Tasić M, Jeremić M, Budimlija Z, Simić-Krstić J, Polzović A, Božović Z. Fractal analysis of STM images of lignin polymer obtained by in vitro synthesis. in General Physiology and Biophysics. 2000;19(2):171-180.
https://hdl.handle.net/21.15107/rcub_rimsi_57 .
Radotić, Ksenija, Tasić, M., Jeremić, M., Budimlija, Z., Simić-Krstić, J., Polzović, A., Božović, Z., "Fractal analysis of STM images of lignin polymer obtained by in vitro synthesis" in General Physiology and Biophysics, 19, no. 2 (2000):171-180,
https://hdl.handle.net/21.15107/rcub_rimsi_57 .
