Our Vision and Goals

The reduction in CO2 emission is a globally recognized challenge and will require transitioning from fossil-based to bio-based products for a sustainable society.

Our vision is to position lignin as one of the leading bio-based candidates through breakthrough-enabling technologies that produce user-customized lignin of high quality.

We strive for circularity, process- and product-integration, complete chemical- and material recovery, and CO2 emission-free process.

We aim to support reseachers, as well as the biochemical- and biomaterial industries with bio-based precursors of high quality for customized products.

FPP Process

The flexible physical protection (FPP) process is based on a patent-pending technology and facilitates the production of lignin with tailored chemical and physical properties.

The raw materials primarily include currently underutilized waste material from the forest industry such as sawdust, bark, and agricultural waste, but can also include traditional wood chips.

The process is integrated, producing hemicelluloses and fibers as secondary products.

The core innovation in the technology adopts the principle of physical protection, tweaked with reaction parameters that can be used to selectively tailor molecular properties for customized applications.

Proligreen Lignin and Applications

Saw shavings and extracted lignin side by side
In the figure: saw shavings and extracted lignin side by side

Features: Proligreen lignins have high purity levels, are bright colored and are odorless. The molecular structures are well-characterized.

Applications: Proligreen lignins have good potential for several applications, e.g. production of biochemicals, biofuels and as buiding blocks for bio-based materials.

About Us

Proligreen AB is a spin-off company from KTH, Royal Institute of Technology, inspired by our novel fundamental research within the area of integrated lignin biorefining and valorization. The research is part of an PhD thesis work performed at the Wallenberg Wood Science Center (WWSC), sponsored by the Knut and Alice Wallenberg (KAW) foundation. Proligreen was founded in August 2022 with guidance and support from KTH Innovation.

Maria Karlsson, Researcher, Co-founder Proligreen AB

Maria Karlsson is a researcher at KTH and has a PhD in Fibre and Polymer Science. Her research focuses on fundamental insights on lignin biorefining and valorization. During her PhD studies at the Wallenberg Wood Science Center (WWSC), she developed expertise in lignin science, including analytics and biorefining. She is the Chief Executive Officer (CEO) of Proligreen AB

Martin Lawoko

Martin Lawoko, Professor, Co-founder Proligreen AB

Martin Lawoko is a Professor of Wood Chemistry at KTH and is one of the principal investigators at the Wallenberg Wood Science Center (WWSC). His research focuses on both fundamental and applied aspects of wood chemistry, biorefining and valorization of biomass. He is one of the leading scientists in research related to lignin chemistry, biorefining, and valorization, with over 20 years of research in the field. He is the Chief Scientific Officer (CSO) of Proligreen AB

Our Research and Related Publications

The Flexible Pysical Protection (FPP) process and technology, are based on solid fundamental research by the two co-founders performed at the Wallenberg Wood Science Center (WWSC) at KTH, Royal Institute of technology. In a nutshell, fundamental knowledge of plant cell walls, lignin structure and reactivity are combined with mild extraction protocols adopting physical protection strategies that can be fine-tuned to to produce lignin with tailored properties for customized applications. Details on the fundamental work can be found in the references below.

iScience, 2023, 26 (9), 107507. 10.1016/j.isci.2023.107507

Green Chemistry, 2022, 24 (6), 1211-1223. 10.1039/D1GC04171A

ChemSusChem 2020, 13 (17), 4666-4677. 10.1002/cssc.202000974


Are you interested in testing Proligreen lignin for your application? Feel free to contact us.