Facile one-step recovery of stable lignin nanoparticles from sugarcane bagasse black liquor and their application in bioactive food packaging.

Lignin nanoparticles (LNPs) were recovered by one-step acidification of the black liquor from sugarcane bagasse treatment, substituting the conventional two-step practice. For the first time, the effect of extra stirring time on the stability of LNPs was investigated. Having been precipitated from 10 to 25 folds diluted black liquor to pH values of 1.

Lignin nano/micro-particles from agricultural biomasses: Developing direct precipitation for integrated biorefinery.

The state-of-the-art, simple and scalable methods for lignin micro-/nano-particles recovery from agricultural biomasses were evaluated in this review. Being non-wood biomasses, these materials can be easily fibrillated, supporting the usage of mild soda or organic solvent pretreatment. Different approaches in particle recovery were compared to conclude that the bottom-up approach facilitates smaller particles towards the nano-size range whereas mechanical treatment can act as a supporting method to increase uniformity and reduce particle sizes after bottom-up precipitation.