New chitosan derivatives | Characterized by | Biological activities | Reference |
---|---|---|---|
Functionalized chitosan with 1,3,4-thiadiazole/2-methyl-1,3,4-thiadiazole/and 2-phenyl-1,3,4-thiadiazole | FT-IR, 13C NMR, and elemental analyses | Antifungal activity against three phytopathogenic fungi including Colletotrichum lagenarium, Phomopsis asparagi, and Monilinia fructicola | [59] |
5-phenyl-1,3,4oxadiazole-2-thiol/chitosan derivatives | FT-IR, TGA, and XRD | Antifungal activity against Alternaria alternate and Fusarium sp. | [70] |
thiosemicarbazide-chitosan derivative | FT-IR, 1H NMR, elemental analysis, XRD, and differential scanning calorimetric (DSC) | Antibacterial activity against Escherichia coli | [71] |
Functionalized chitosan with 5-amino-1,3,4-thiadiazole-2-thiol; 5-phenyl-1,3,4-oxadiazole-2-thiol; 5-(4 chlorophenyl)-1,3,4-thiadiazole-2-thiol | FT-IR and 1H NMR | - Antibacterial activity against Escherichia coli, Aeromonas hydrophila, Shegilla sp., Staphylococcus aureus, Bacillus subtilis - Antifungal activity against Candida albicans and Aspergillus niger | [69] |
Functionalized chitosan with ethyl/benzyl thiadiazole derivatives | 1H NMR,13C-NMR, FT-IR, TGA, Elemental analysis, Mass spectrum, and UV–vis spectroscopy | - Antibacterial activity against Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Pseudomonas aeruginosa - Antifungal activity against Candida albicans | Current study |