gholizadeh, T., Farajpour Roudsari, A., Tabei, A. (2013). Comparative study of chemical components and morphological features of trunk and cone fibers from loblolly pine grown in Gilan province. , 28(3), 545-560. doi: 10.22092/ijwpr.2013.3462
Tahereh gholizadeh; Arash Farajpour Roudsari; Asghar Tabei. "Comparative study of chemical components and morphological features of trunk and cone fibers from loblolly pine grown in Gilan province". , 28, 3, 2013, 545-560. doi: 10.22092/ijwpr.2013.3462
gholizadeh, T., Farajpour Roudsari, A., Tabei, A. (2013). 'Comparative study of chemical components and morphological features of trunk and cone fibers from loblolly pine grown in Gilan province', , 28(3), pp. 545-560. doi: 10.22092/ijwpr.2013.3462
gholizadeh, T., Farajpour Roudsari, A., Tabei, A. Comparative study of chemical components and morphological features of trunk and cone fibers from loblolly pine grown in Gilan province. , 2013; 28(3): 545-560. doi: 10.22092/ijwpr.2013.3462

Comparative study of chemical components and morphological features of trunk and cone fibers from loblolly pine grown in Gilan province

تحقیقات علوم چوب و کاغذ ایران
Article 13, Volume 28, Issue 3 - Serial Number 44, October 2013, Pages 545-560    PDF (362.2 K)
Document Type: Research Paper
DOI: 10.22092/ijwpr.2013.3462
Authors
Tahereh gholizadeh* 1; Arash Farajpour Roudsari2; Asghar Tabei3
1M.Sc. Department of Wood and Paper Science, Young Researcher Club, Astara Branch, Islamic Azad University, Astara, Iran,
2Assistant professor, Department of Wood and Paper Science, Astara Branch, Islamic Azad University, Astara, Iran
3Assistant Professor, Young Researcher Club, Astara Branch, Islamic Azad University, Astara, Iran
Abstract
The purpose of this study was to compare the chemical compositions and biometric features of stem and cone fibers (length, diameter, and wall thickness) and the derived coefficients of loblolly pine (Pinus taeda) in Astara district, Gilan province. Discs from stem and cone were randomly taken and the chemical compositions and biometric features were measured employing the TAPPI standard test methods andFranklinmacerating technique, respectively. The biometric coefficients were estimated as well. Statistical analyses of the results indicated that the average cellulose content in stem and the cone was 54.83% and 27.57%, respectively. Lignin was estimated to be 32.57% in the stem and 34% in the cone. Furthermore, extractives soluble in ethanol, acetone and water from stem wood were measured as 92%, 1.97% and 7.04% respectively. The relevant values for pine cone were 1%, 2.45% and 7.28%, respectively. According to the results of statistical analysis, there was 5% significant difference between the results measured from cones and the stem except for the slenderness ratio. Regarding the length, diameter, lumen diameter and flexibility factor, the P. taeda stem possesses a higher value compared with cone and the runkel ratio was higher in cones compared to stem.
Keywords
Chemical compositions; pine cone; slenderness ratio; flexibility ratio; runkel ratio
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