Department of Bioproducts and Biosystems, Bioproduct Chemistry, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, 00076, Espoo, Finland.
World J Microbiol Biotechnol. 2019 Jul 30;35(8):125. doi: 10.1007/s11274-019-2697-7.
The global need to develop sustainable materials and products from non-fossil raw material is pushing industry to utilize side-streams more efficiently using green processes. Aromatic lignin, the world's second most abundant biopolymer, has multiple attractive properties which can be exploited in various ways instead of being burnt or used as animal feed. Lignin's poor water solubility and its highly branched and random structure make it a challenging biopolymer to exploit when developing novel technologies for the preparation of tailored nanobiomaterials for value-added applications. The notable number of scientific publications focusing on the formation and modification of technical lignin in nanoparticulate morphology show that these bottlenecks could be solved using lignin in the form of colloidal particles (CLPs). These particles are very stable at wide pH range (4-11) and easily dispersible in organic solvents after stabilized via cross-linking. Negative hydroxyl groups on the CLP surface enable multiple enzymatic and chemical modifications e.g. via polymerization reactions and surface-coating with positive polymers. This contribution highlights how tailored CLPs could be innovatively exploited in different the state-of-the-art applications such as medicine, foods, and cosmetics.
全球需要开发可持续的材料和产品，以非化石原料为基础，这促使工业界更有效地利用绿色工艺来利用副产物。芳香族木质素是世界上第二丰富的生物聚合物，具有多种有吸引力的特性，可以通过各种方式加以利用，而不是燃烧或用作动物饲料。木质素的水溶性差，其高度支化和随机结构使其成为一种具有挑战性的生物聚合物，在开发用于增值应用的定制纳米生物材料的新技术时，需要加以利用。大量的科学出版物集中在纳米颗粒形态的技术木质素的形成和改性上，这表明可以使用胶体颗粒（CLP）形式的木质素来解决这些瓶颈问题。这些颗粒在很宽的 pH 值范围内（4-11）非常稳定，并且在交联稳定后可以很容易地分散在有机溶剂中。CLP 表面的负羟基基团可以进行多种酶促和化学修饰，例如通过聚合反应和用正聚合物进行表面涂层。本贡献强调了如何创新地利用定制化的 CLP 在不同的最先进应用中发挥作用，例如医学、食品和化妆品。
