Related Experiment Video
Updated: Apr 27, 2026

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
Synthesis and characterization of some acyl thiourea derivatives of chitosan and their biocidal activities
Said S Elkholy1, Hend A Salem1, Mohamed Eweis2
1Department of Chemistry, Faculty of Science, Cairo University, Giza, Cairo 12613, Egypt.
Abstract:
Three acyl derivatives of chitosan (CS) with different side chains were synthesized and their structures were characterized. Their swelling behavior was investigated. The antifungal behavior of these chitosan derivatives was investigated in vitro on the mycelial growth, sporulation and germination of conidia or sclerotia of the sugar-beet pathogens, Rhizoctonia solani K"uhn (AG2-2) and Sclerotium rolfsii Sacc. All the prepared derivatives had a significant inhibiting effect on the different stages of development on the germination of conidia or sclerotia of all the investigated fungi. In the absence of chitosan and its derivative, R. solani exhibited the fastest growth of the fungi studied.
Related Concept Videos
Preparation and Reactions of Thiols
Preparation and Reactions of Sulfides
Acetals and Thioacetals as Protecting Groups for Aldehydes and Ketones
In the presence of multiple functional groups, when selective reduction of one group over the other is desired, groups like aldehydes and ketones that form acetals...
Chemical Agents for Microbial Control
Indirect-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
Structure and Nomenclature of Thiols and Sulfides

