Commercial chitosan (Sigma-Aldrich) with three different average molecular weights (low (L) was originally obtained, according to the manufacturer, from chitin of shrimp shells, whereas medium (M), and high (H) were originally obtained
Commercial chitosan (Sigma-Aldrich) with three differentaverage molecular weights (low (L) was originally obtained,according to the manufacturer, from chitin of shrimp shells,whereas medium (M), and high (H) were originally obtained