Fig. 1From: Usage of chitosan from Hermetia illucens as a preservative for fresh Prunus species fruits: a preliminary analysisFTIR spectra of chitin (CT) (a) and chitosan (CS) (b) produced from BSF pupal exuviae, both unbleached (Unbl CS) and bleached (Bl CS), in comparison with the commercial polymers (Comm CT and Comm CS)Back to article page