Highlight Research New method to synthesis nano chitosan from Vannamei shrimp with high Deacetylation Degree Nano can adsorb heavy metal Fe up 81.35% Shrimp shells as an alternative adsorbents for Abstract cultivation produces wastes in several forms, including the molting process. shell waste be used a source of chitosan. Many researches have various applications, one which is pollution. This ...

Avermectin inhibits Mucor miehei and Artemia salina chitin synthesis and to a degree DNA synthesis in the former. The antibiotic interferes with chitin turnover in brine shrimp and inhibits Streptomyces antibioticus chitinase activity in vitro. In light of the proposed mode of action of avermectin and the anomolies in the literature, it is proposed that avermectin can kill susceptible organisms...

Thailand is one of the major producers and exporters of shrimp and other marine products worldwide. Over 600,000 metric tons of marine products containing chitinous materials, shrimp, crab and squid, are produced yearly, which resulted in abundant amount of raw materials for the production of chitin-chitosan. Chitin-chitosan industry in Thailand has grown considerably in the past decade. Howeve...

Defenses against predators and parasites offer excellent illustrations of adaptive phenotypic plasticity. Despite vast knowledge about such induced defenses, they have been studied largely in isolation, which is surprising, given that predation and parasitism are ubiquitous and act simultaneously in the wild. This raises the possibility that victims must trade-off responses to predation versus ...

Chitosanases and proteases have received much attention due to their wide range of applications. Four kinds of chitinous materials, squid pens, shrimp heads, demineralized shrimp shells and demineralized crab shells, were used as the sole carbon and nitrogen (C/N) source to produce chitosanases, proteases and α-glucosidase inhibitors (αGI) by four different strains of Paenibacillus. Chitosanase...

Chitin the second most abundant after cellulose biopolymer found in nature after, is produced by many living organisms, and is present usually in a complex with other polysaccharides and proteins. Chitin was found as a major component in arthropods (insects, crustaceans, arachnids and myriapods), nematodes, algae and fungi. In this study Chitin was isolated from various species (crab, squilla, ...

Background: Chitin is an important natural resource. The annual worldwide production is estimated in approximately 10 10 -10 12 ton. It is produced by arthropods (insects and crustaceans), molluscs and fungi. Its main biological function is structural. Crustacean shells are the most important chitin source for commercial use due to its high content and ready availability. Chitin and its derivat...

The Characteristics Properties of Chitosan Irradiated by Gamma Rays. is an abundant natural biopolymer after cellulose derived from the deacetylation chitin and widely used in many applications. purpose this research to determine characteristics physical, chemical, mechanical properties oligochitosan which are irradiated gamma-rays various irradiation doses. Two types shrimp shells were as raw ...