Figure 7: Comparison of washing water from pine and alder pollen with that of birch pollen batches #B and #C.
From: Boreal pollen contain ice-nucleating as well as ice-binding ‘antifreeze’ polysaccharides
(a) Pine pollen WW shows one heterogeneous ice nucleation signal (magenta), similar to birch #B WW (red), and alder pollen WW shows several heterogeneous ice nucleation signals (orange) similar to birch #C WW (blue). (b) Pine and alder pollen WW show ice shaping. (c) FTIR spectra of dried residues of pine and alder pollen WW (magenta and orange, respectively) in comparison to birch pollen #B and #C WW (red and blue). We note the close similarity of the pine and birch #B spectra and those of alder and birch #C, suggesting that they contain very similar anionic polysaccharides, with similar ice nucleation behaviour, see panel (a).
