Karimah Azizatul, Wistara Nyoman Jaya, Fatriasari Widya, Hussin M Hazwan
Department of Forest Products, Faculty of Forestry and Environment, IPB University, Bogor 16680, Indonesia; Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN), Kawasan KST Soekarno, Jl Raya Bogor KM 46 Cibinong, Bogor 16911, Indonesia.
Department of Forest Products, Faculty of Forestry and Environment, IPB University, Bogor 16680, Indonesia.
Int J Biol Macromol. 2025 Jun;316(Pt 1):144425. doi: 10.1016/j.ijbiomac.2025.144425. Epub 2025 May 24.
A sustainable and eco-friendly approach for utilizing sugarcane trash (SCT) biomass is currently under development. The SCT was subjected to a sequential pretreatment process involving microwave irradiation and autoclave heating before extracting alkali lignin. Nanolignin was then synthesized from the extracted lignin. The particle size of the synthesized nanolignin ranged between 65 and 84 nm, according to morphological characterization. This nanolignin was then transformed into a nanolignin/polyvinyl alcohol (PVA) biosurfactant via an eco-friendly solvent. The surface tension and functional groups of the biosurfactant were evaluated. The yield of lignin obtained from SCT varied between 25 % and 28 %, with the same purity of 70 %. The physical, chemical, and morphological characteristics of isolated lignin are comparable, making it possible to produce nanolignin for biosurfactant synthesis. The presence of aryl-O stretching (1200 cm) and 1,4-disubstituted CH bending (800 cm) peaks of absorbance in the infrared spectra indicated that the grafting of nanolignin into PVA occurred in the phenolic group of lignin. The biosurfactant nanolignin from autoclave treatment has a low surface tension of 42.20 mN/m, making it a more environmentally friendly additive in lignocellulose hydrolysis.
目前正在开发一种可持续且环保的利用甘蔗渣（SCT）生物质的方法。在提取碱木质素之前，对SCT进行了包括微波辐射和高压釜加热的连续预处理过程。然后从提取的木质素合成纳米木质素。根据形态表征，合成的纳米木质素的粒径在65至84纳米之间。然后通过一种环保溶剂将这种纳米木质素转化为纳米木质素/聚乙烯醇（PVA）生物表面活性剂。对该生物表面活性剂的表面张力和官能团进行了评估。从SCT获得的木质素产率在25%至28%之间，纯度均为70%。分离出的木质素的物理、化学和形态特征具有可比性，这使得生产用于生物表面活性剂合成的纳米木质素成为可能。红外光谱中芳基-O伸缩振动（1200厘米）和1,4-二取代CH弯曲振动（800厘米）吸收峰的存在表明纳米木质素接枝到PVA发生在木质素的酚基上。来自高压釜处理的生物表面活性剂纳米木质素具有42.20毫牛/米的低表面张力，使其成为木质纤维素水解中更环保的添加剂。
