Manzano Vela Dennis Renato, Villegas Freire Cristina Nataly, Zabala Vizuete Rolando Fabian, Flores Mancheno Ana Carola
Facultad de Recursos Naturales, Escuela Superior Politécnica de Chimborazo (ESPOCH), Riobamba 060150, Ecuador.
Polymers (Basel). 2024 Sep 25;16(19):2713. doi: 10.3390/polym16192713.
The present study explored the extraction of cellulose from forest residues of four timber species, namely Moritz ex Turcz, Ruiz & Pav, L. f. and (Mez) Pipoly, in the high montane forest of Chimborazo province, Ecuador, for the sustainable utilization of leaves, branches, and flowers. An alkaline extraction method was used on the residues without the need for prior degreasing. An ANOVA analysis was applied to evaluate significant differences in cellulose extraction yields among the species' residues. The characterization techniques used were Fourier transform infrared spectroscopy (FTIR) and polarized light optical microscopy, which confirmed the successful extraction of cellulose with characteristics comparable to standard cotton cellulose and other traditional species. The results showed significant variations in cellulose yield among the species, with L. f achieving the highest yield of 80.83%. The crystallinity of the samples was clearly evidenced by the polarity of the light in the samples during microscopy, demonstrating that the residues can be a viable and sustainable source of cellulose, contributing to a circular economy and reducing the environmental impact of forest waste.
本研究探索了从厄瓜多尔钦博拉索省高山区森林中四种木材（即莫里茨氏木、鲁伊斯氏木、小叶木和皮波里木）的森林残留物中提取纤维素，以实现树叶、树枝和花朵的可持续利用。对残留物采用了碱性提取方法，无需事先脱脂。应用方差分析来评估不同树种残留物纤维素提取率的显著差异。所使用的表征技术为傅里叶变换红外光谱（FTIR）和偏光光学显微镜，这证实了纤维素的成功提取，其特性与标准棉纤维素和其他传统树种相当。结果表明，不同树种的纤维素产量存在显著差异，小叶木的产量最高，达到80.83%。在显微镜观察过程中，样品中光的极性清楚地证明了样品的结晶度，表明这些残留物可以成为纤维素的可行且可持续的来源，有助于循环经济并减少森林废弃物对环境的影响。
