Department of Forest Biomaterials, North Carolina State University, Biltmore Hall, Campus Box 8005, Raleigh, NC, 27695, USA.
Department of Plant and Microbial Biology, North Carolina State University, 4550A Thomas Hall, Campus Box 7612, Raleigh, NC, 27695, USA.
Appl Microbiol Biotechnol. 2021 Feb;105(4):1345-1363. doi: 10.1007/s00253-021-11107-2. Epub 2021 Jan 22.
The pulp and paper industry is a major source of lignocellulose-containing streams. The components of lignocellulose material are lignin, hemicellulose, and cellulose that may be hydrolyzed into their smaller components and used as feedstocks for valorization efforts. Much of this material is contained in underutilized streams and waste products, such as black liquor, pulp and paper sludge, and wastewater. Bacterial fermentation strategies have suitable potential to upgrade lignocellulosic biomass contained in these streams to value-added chemicals. Bacterial conversion allows for a sustainable and economically feasible approach to valorizing these streams, which can bolster and expand applications of the pulp and paper industry. This review discusses the composition of pulp and paper streams, bacterial isolates from process streams that can be used for lignocellulose biotransformations, and technological approaches for improving valorization efforts. KEY POINTS: • Reviews the conversion of pulp and paper industry waste by bacterial isolates. • Metabolic pathways for the breakdown of lignocellulose components. • Methods for isolating bacteria, determining value-added products, and increasing product yields.
制浆造纸工业是含有木质纤维素的物流的主要来源。木质纤维素材料的组成部分是木质素、半纤维素和纤维素，它们可能被水解成更小的成分，并用作增值努力的原料。这些材料中的大部分都包含在未充分利用的物流和废物中，例如黑液、纸浆和造纸污泥以及废水。细菌发酵策略具有将这些物流中所含的木质纤维素生物质升级为增值化学品的潜在优势。细菌转化为利用这些物流提供了一种可持续且经济可行的方法，从而可以增强和扩大制浆造纸行业的应用。本综述讨论了纸浆和造纸物流的组成、可用于木质纤维素生物转化的工艺物流中的细菌分离物，以及提高增值工作的技术方法。要点： • 综述了细菌分离物对制浆造纸工业废物的转化。 • 木质纤维素成分分解的代谢途径。 • 分离细菌、确定增值产品和提高产品产量的方法。
