Extraction and Characterization of Natural Dye from Green Walnut Shells and Its Use in Dyeing Polyamide: Focus on Antibacterial Properties

Figure 4

MS fragmentations of the extracted dye: (a) 𝑛-hexane/petroleum ether (90 : 10, v/v), 𝑅_𝑓=0.32 and (b) petroleum ether/diethyl ether (50 : 50, v/v), 𝑅_𝑓=0.68.

(a)

(b)