Results 1 to 10 of about 95,331 (355)

Chitin modulates innate immune responses of keratinocytes. [PDF]

PLoS ONE, 2011
BACKGROUND: Chitin, after cellulose the second most abundant polysaccharide in nature, is an essential component of exoskeletons of crabs, shrimps and insects and protects these organisms from harsh conditions in their environment.
Barbara Koller, Alisa Sophie Müller-Wiefel, Rudolph Rupec, Hans Christian Korting, Thomas Ruzicka   +4 more
doaj   +3 more sources

Efficacy of chitinases from mangrove wetland derived Penicillium oxalicum on powdered chitin [PDF]

Frontiers in Microbiology
Chitin, an abundant polysaccharide in shrimp and crab shells, serves as a primary resource for producing glucosamine and chitosan oligosaccharides. Chemical hydrolysis is widely utilized in these processes, due to the limited efficacy of many chitinases ...
Biaoshi Wang, Yalin Zhang, Yalin Zhang, Jianzhi Ye, Jie Ma, Shuyan Liu, Wenjie Ou, Lulu Cao, Edward S.X. Moh, Zhiping Han   +9 more
doaj   +2 more sources

Daily fluctuations in COVID-19 infection rates under Tokyo’s epidemic prevention measures – new evidence from adaptive Fourier decomposition

Frontiers in Public Health, 2023
BackgroundThe COVID-19 pandemic has witnessed widespread infections and variants. Particularly, Tokyo faced the challenge of seven waves of COVID-19, during which government interventions played a pivotal role.
Guibin Lu, Zifeng Yang, Zifeng Yang, Zifeng Yang, Zifeng Yang, Wei Qu, Wei Qu, Tao Qian, Zige Liu, Wei He, Zhijie Lin, Chitin Hon, Chitin Hon, Chitin Hon, Chitin Hon   +14 more
doaj   +1 more source

Crustacean shell waste derived chitin and chitin nanomaterials for application in agriculture, food, and health – A review

Carbohydrate Polymer Technologies and Applications, 2023
Chitin, a widely available natural polymer, is the fundamental structural component of crustacean shells. The crustacean processing industry produces a lot of shell waste each year (in millions), most of which is discarded and poses serious environmental
Soibam Ngasotter, K.A.Martin Xavier, Maibam Malemngamba Meitei, David Waikhom, Madhulika, Jyotirmoy Pathak, Soibam Khogen Singh   +6 more
doaj   +1 more source

Using Patella caerulea as a biomaterial: Chitin and Chitosan [PDF]

Aswan University Journal of Environmental Studies, 2023
Chitin is the most significant polysaccharide that can be obtained from the shells of crustaceans. In addition, the appearance of new application areas of chitin and chitosan is increasing, and the claim for new sources of chitin is increasing. For these
Erkan UĞURLU
doaj   +1 more source

Studies on Chitin. I. Acetylation of Chitin [PDF]

Polymer Journal, 1979
Chitin was converted into diacetylchitin and also into various kinds of acetylchitins. A fully acetylated chitin was prepared by the acetylation of chitin in acetic anhydride—methanesulfonic acid mixture at 0°C overnight, or in acetic anhydride—perchloric acid mixture at 0°C for 3 h.
Nishi, Norio, Noguchi, Junzo, Tokura, Seiichi, Shiota, Hiroyuki   +3 more
openaire   +1 more source

Screening and Enzymatic-producing Study of Chitin Deacetylase Producing Bacteria-Lysinibacillus sp.

Shipin gongye ke-ji, 2022
In order to biodegrade natural chitin, in this study, chitin was used as the sole carbon source, obtain chitin deacetylase strains which could produce chitosan from natural chitin by biological method.
Xin MENG, Guofeng AI, Guotao JIANG, Keyi XIE, Aili JIANG   +4 more
doaj   +1 more source

The Chitin Connection [PDF]

mBio, 2012
ABSTRACTChitin, a polymer ofN-acetylglucosamine, is an essential component of the fungal cell wall. Chitosan, a deacetylated form of chitin, is also important in maintaining cell wall integrity and is essential forCryptococcus neoformansvirulence. In their article, Gilbert et al. [N. M. Gilbert, L. G. Baker, C. A. Specht, and J. K.
David L. Goldman, Alfin G. Vicencio
openaire   +3 more sources

Extraction and characterization of chitin from granary weevil, Sitophilus granaries L. (Coleoptera: Curculionidae) [PDF]

Arthropods, 2022
Insect chitin has been extracted from granary weevil - Sitophilus granarius L, commonly called wheat weevil in laboratory by treating it with 1 M HCl and 1 M NaOH. This was followed by decolorization. The yield of chitin from this species is 20.2%.
Pranil Jagdale, Nilesh Mharsale, Rhushikesh Gotarne, et al.   +2 more
doaj  

A dynamic interplay between chitin synthase and the proteins Expansion/Rebuf reveals that chitin polymerisation and translocation are uncoupled in Drosophila.

PLoS Biology, 2023
Chitin is a highly abundant polymer in nature and a principal component of apical extracellular matrices in insects. In addition, chitin has proved to be an excellent biomaterial with multiple applications.
Ettore De Giorgio, Panagiotis Giannios, M Lluisa Espinàs, Marta Llimargas   +3 more
doaj   +1 more source