This book focuses on the research on chitin, chitosan, and their derivatives and covers the related developments in the fields of textiles, wastewater treatment, biomedicine, and food industry. It discusses the natural sources, properties, characterization methods, and uses of chitin and chitosan, chitin extraction, and preparation of chitosan with different chemicals and biological methods. The book is a useful resource for scientists, professionals, and students engaged in academic and industrial research pertaining to chitin, chitosan, and polysaccharides.

Shakeel Ahmed is an assistant professor at the Postgraduate Department of Chemistry, Government Postgraduate College Rajouri, Jammu and Kashmir, India. He has published several research papers in the field of green nanomaterials and biopolymers for various applications, including biomedicine, packaging, and water treatment. Dr. Ahmed has published more than 30 books on nanomaterials and green composites.

Soumeia Zeghoud is an associate professor of chemistry at the University of El-Oued, Algeria. She has expertise in synthetic and medicinal chemistry, natural products, organic synthesis, chemometric analysis, green nanomaterials, and biopolymers.

Hadia Hemmami is an associate professor of chemistry at the University of El-Oued, Algeria. She has expertise in electrochemistry, analytical chemistry, bioelectrochemistry, green nanomaterials, phytochemical purification, and biopolymers.

Ilham Ben Amor is an associate professor at the University of El-Oued, Algeria. She has expertise in green nanomaterials, bionanomaterials, nanocomposites, and polymers for various purposes, including biological applications and water treatment.