Wulandari Asri Peni, Purba Junaedy Raganzan, Irawan Budi, Masruchin Nanang, Ismayanti Maya, Gustiani Rr Srie
Department of Biology - Faculty of Mathematics and Natural Sciences, Padjadjaran University, Jl. Raya Bandung Sumedang Km 21, Jatinangor, Indonesia.
Biomaterials Research Center - LIPI, Jl. Raya Bogor Km. 46, Cibinong, Indonesia.
Heliyon. 2021 Nov 14;7(11):e08392. doi: 10.1016/j.heliyon.2021.e08392. eCollection 2021 Nov.
Ramie is one of the long natural fiber has strong mechanical properties. To improve the quality of ramie fiber, this study developed a bio degumming method from superior isolates of pectinolytic fungi sp. and optimization of raw fiber based on harvesting time. The results of the pectinolytic fungi selection were used as a bio degumming bio starter under optimum conditions of pH and temperature. Also, fiber material harvested at 50-day and 60- day to obtain an increase in the physical quality. The bio degummed fiber was analysed to determine the tenacity and fineness, the functional groups contained, thermal analysis, moisture regain and content, material polymers, and degree of crystallinity. Based on the results, the finest ramie properties with 50-day harvested fiber are as follows: strength 24.54 ± 0, 02 g/tex, elongation 12.04 ± 2,90%, fineness 1.33 ± 0,17 tex, moisture regain 8.23 ± 0,18 %, and moisture content 8.96 ± 0,21 %. Ramie fibers at initial conditions and after bio degumming at 50 and 60-day harvested had the same pattern of thermal stability. The dyeability test showed that the degummed 60-day harvested fibers has the greatest dye fixing ability. The bio degumming process with this method can improve the quality and dyeability of the rami fiber which can be used for future applications.
苎麻是具有较强机械性能的天然长纤维之一。为提高苎麻纤维质量，本研究开发了一种利用果胶分解真菌优良菌株进行生物脱胶的方法，并基于收获时间对原纤维进行优化。果胶分解真菌筛选的结果被用作在最佳pH和温度条件下的生物脱胶生物启动剂。此外，在50天和60天收获纤维材料，以提高物理质量。对生物脱胶纤维进行分析，以确定其强度、细度、所含官能团、热分析、回潮率和含量、材料聚合物以及结晶度。基于结果，50天收获的纤维具有最佳的苎麻性能如下：强度24.54±0.02克/特克斯，伸长率12.04±2.90%，细度1.33±0.17特克斯，回潮率8.23±0.18%，含水量8.96±0.21%。初始条件下的苎麻纤维以及50天和60天收获后进行生物脱胶的纤维具有相同的热稳定性模式。染色性能测试表明，60天收获的脱胶纤维具有最大的固色能力。用这种方法进行生物脱胶过程可以提高苎麻纤维的质量和染色性能，可用于未来的应用。
