Green nanoparticles have attracted a lot of attention because of the many different fields in which they can be used due to their enhanced multifunctional actions. We have investigated the possibility of synthesising sodium lignosulfonate nanoparticles (SLS NPs) with the help of chitosan, another biomolecule. The presence of two biomolecules (i.e., lignosulfonate and chitosan) in the structure of the synthesised SLS NPs (with an average diameter of 125 nm) has demonstrated synergetic efficacy by exhibiting outstanding multifunctional properties. Excellent antibacterial activity was found for the synthesised SLS NPs against both Gram-positive (S. aureus) and Gram-negative (E. coli) bacteria. SLS NPs have also shown a 92% increase in antioxidant activity. As SLS NPs are made up of polyphenolic molecules, they can work well as UV protectors, which has been shown in experiments.

Novel synthesis of biobased sodium lignosulfonate nanoparticles and its multifunctional activities

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