Table 1. Main Characteristics of Lignin Samples Tested for Virus Adsorption Experiments^a.

lignin format	hydrodynamic diameter (nm)	PDI	zeta potential (mV)
CLPsb	108.6 ± 1.7	0.065 ± 0.020	–35.9 ± 1.6
cationic ligninc	N/A	N/A	+21.7 ± 1.6
c-CLPsb	122.4 ± 0.5	0.056 ± 0.005	+24.1 ± 1.4

^aAt least three measurements were completed for each parameter. Error ranges are standard deviations. N/A: not analyzed

^bValues measured at pH 5 in 10 mM NaOAC buffer.

^cValue measured at pH 5 in water, sample diluted in acetic acid (pH 4.7).