Chitin is an abundant polysaccharide found in fungal cell walls, crustacean shells, and insect exoskeletons. The immunological properties of both chitin and its deacetylated derivative chitosan are of relevance due to frequent natural exposure and their increasing use in translational applications. Depending on the preparation studied and the endpoint measured, these compounds have been reporte...

Biomineralization research on mollusc shells has mostly focused on nacre formation. Chitin, silk fibroin protein, and acidic macromolecules are important components for shell formation. Although the principle concept behind shell calcification was developed many years ago, the individual components have not been well scrutinized. Besides that, Mollusca are the second largest invertebrate phylum...

Lipo-chitinoligosaccharides (LCOs) are key molecules for the establishment of plant-microorganisms symbiosis. Interactions of leguminous crops with nitrogen-fixing rhizobial bacteria involve Nod factors, while Myc-LCOs improve the association of most plants with arbuscular mycorrhizal fungi. Both Nod factors and Myc-LCOs are composed of a chitinoligosaccharide fatty acylated at the non-reducing...

The crustacean exoskeleton presents several functions including the stabilization of the whole body of the animal, resistance to mechanical loads, and protection to the environment and against predators [1]. The structure of crustacean exoskeleton consists of an organic matrix constituted by α-chitin, proteins and carotenoid pigments and an inorganic fraction where calcium carbonate is the main...

In the current investigation, chitin and chitosan are extracted from Callinectes amnicola (crab) Penaeus notialis (shrimp) shell wastes using predetermined optimization conditions. The shrimp produces higher yield (26.08%), (16.93%) degree of deacetylation (DDA) 89.73% than yields (19.36%), (13.29%) DDA crab (84.20%). Fourier Transform Infrared (FTIR) acid-base titration methods used to obtain ...

Large numbers of crab shells are disposed as food waste in the processing process. Chitin nanofiber (CNF) refers to chitin extracted from form ultrafine fibers that enable uniform dispersion water. We explored feasibility using CNF materials plant growth promoters. investigated effects application with fertilizer and its various methods on komatsuna cultivated Entisols Andosols materials. The s...

Preparation and characterization of water soluble chitosan was examined for their antibacterial activity from P. stylifera. The yield of crude chitosan and water soluble chitosan was 54.3 % and 87.8%. The FT-IR spectrum of chitin, chitosan and water soluble chitosan also determined and characterization was done and compared with standards. Compare to other bacterial strains S.auerus (18.3mm) ha...