Over the years, lignin has drawn a great deal of interest for their potential use as bio-polymers due to the presence of high amount of phenolic compounds, non-polluting feature and cost-competitiveness as compared to synthetic polymers. However, in order to fast-track their development, different attempts are made towards the usage of lignin in nano form since it exhibits some unique properties in nanoscale range. The present review article provides a detail analysis on the recent advancement in the synthesis and applications of lignin nanoparticles (LNPs) derived from agro-industrial waste residues. In view of that, an in-depth morphological analysis was reviewed to assess the structural influence on the characteristics of LNPs. Further, application of LNPs is explored in different fields including bio-medical engineering, pharmaceuticals, skin-care products and food industries. Finally, the paper is concluded discussing various challenges associated with the synthesis, modification and development with an aspiration of futuristic developments. The readers of this review article will be highly benefitted after acquiring a comprehensive knowledge on LNPs and its different synthesis processes along with various applications.

多年来，木质素由于其作为生物聚合物的潜在用途而备受关注，这是由于与合成聚合物相比，存在大量的酚类化合物，无污染的特性和成本竞争力。然而，为了快速跟踪其发展，对木质素以纳米形式的使用进行了不同的尝试，因为木质素在纳米范围内表现出一些独特的性质。本综述文章详细分析了源自农业工业废渣的木质素纳米颗粒（LNP）的合成和应用的最新进展。有鉴于此，对深入的形态学分析进行了评估，以评估结构对LNPs特性的影响。此外，LNP的应用也在生物医学工程，制药，护肤产品和食品工业。最后，本文得出结论，讨论了与合成，修饰和开发相关的各种挑战，并展望未来的发展。在获得了有关LNPs及其不同合成方法以及各种应用的全面知识之后，这篇综述文章的读者将受益匪浅。