1 Sample 1 Eluate (blank, to check the activity of the medium
alone)
2 Sample 2 Eluate plus 1 g of virgin standard cellulose (positive
control)
3 Sample 3 Eluate plus 1 g of PLA based sample (pieces of
1 2 cm)
4 Sample 4 Eluate plus 1 g of PLA based sample coated with Whey
(pieces of 1 2 cm)