Abstract
Novel and improved forest-based products are currently under intensive
research and development. An interesting option is to add biomolecules
into a pigment coating color and apply it on a paper surface. The aim of
this work was to obtain general and profound knowledge about the
effects of coating color composition and processing on the compatibility
of the coating with biomolecules. Two different laccases, Trametes
hirsuta (ThL) and Melanocarpus albomyces (MaL), having different redox
potentials were studied as model biochemically active compounds in
coating colors. Coating colors for LWC paper and inkjet paper were
studied. The effects of coating color composition, pH, drying conditions
of the coating layer and calendering on the enzymatic activity were
studied. It was found out that laccase retained its activity in coating
color dispersions as well as on the coated papers. MaL was found to
retain its activity better in the coating layers than ThL. MaL had
retained its activity in coated paper even after 5 ½ months storage.
Drying of the coating layer did not reduce the enzyme activity
significantly whereas calendering reduced the enzymatic activity to some
extent.
| Original language | English |
|---|---|
| Pages (from-to) | 118-127 |
| Number of pages | 10 |
| Journal | Nordic Pulp and Paper Research Journal |
| Volume | 26 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2011 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Laccase
- pigment coating
- bioactive paper
- enzymatic activity