Results 1 to 10 of about 71,098 (199)

Gold nanoparticles with chitosan, N-acylated chitosan, and chitosan oligosaccharide as DNA carriers [PDF]

Nanoscale Research Letters, 2019
Currently, gold nanoparticles have found applications in engineering and medical sciences, taking advantage from their properties and characteristics. Surface plasmon resonance, for instance, is one of the main features for optical applications and other physical properties, like high density, that represents the key for cellular uptake.
Paulina Abrica-González, José Alberto Zamora-Justo, Antonio Sotelo-López, Guillermo Rocael Vázquez-Martínez, José Abraham Balderas-López, Alejandro Muñoz-Diosdado, Miguel Ibáñez-Hernández   +6 more
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Using Chitosan or Chitosan Derivatives in Cancer Therapy [PDF]

Polysaccharides, 2021
Cancer is one of the major causes of death worldwide. Chemotherapeutic drugs have become a popular choice as anticancer agents. Despite the therapeutic benefits of chemotherapeutic drugs, patients often experience side effects and drug resistance. Biopolymers could be used to overcome some of the limitations of chemotherapeutic drugs, as well as be ...
Md Salman Shakil, Kazi Mustafa Mahmud, Mohammad Sayem, Mahruba Sultana Niloy, Sajal Kumar Halder, Md. Sakib Hossen, Md. Forhad Uddin, Md. Ashraful Hasan   +7 more
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Concepts for Developing Physical Gels of Chitosan and of Chitosan Derivatives [PDF]

Gels, 2018
Chitosan macro- and micro/nano-gels have gained increasing attention in recent years, especially in the biomedical field, given the well-documented low toxicity, degradability, and non-immunogenicity of this unique biopolymer. In this review we aim at recapitulating the recent gelling concepts for developing chitosan-based physical gels.
Sacco, Pasquale, FURLANI, FRANCO, de Marzo, Gaia, Marsich, Eleonora, Paoletti, Sergio, Donati, Ivan   +5 more
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Glucosamine, Chitosan, Chitosan Derivatives, Chitosan Oligosaccharide

, 2023
Glucosamine, Chitosan, Chitosan Derivatives, Chitosan ...
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Antimicrobial Activity of Native Chitosan, Degraded Chitosan, and O-Carboxymethylated Chitosan

Journal of Food Protection, 2003
The antimicrobial activity of native chitosan was compared to that of lipase-degraded chitosan. The effects of O-carboxymethylated (O-CM) substitution on native (molecular weight, 120; degree of deacetylation, 84.71%) and lipase-degraded chitosans were also investigated.
Hyun Jin Park, Hyun Jin Park, Ronald Thomas, Chan Lee, Kyung W. Kim   +4 more
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Production and characterization of chitosan and glycerol-chitosan films

MRS Advances, 2018
This work presents the study of the isolation of chitin from residues of the Patagonian shrimp (Pleoticus muelleri), and its subsequent conversion to chitosan under different reaction conditions. The obtained products were characterized by evaluating their molecular weight (Mw) and degree of deacetylation (DD).
Castelló, María Emilia, Anbinder, Pablo Sebastián, Amalvy, Javier Ignacio, Peruzzo, Pablo José   +3 more
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Synthesis and characterization of chitosan ethers: Hydroxypropyl chitosan and Hydroxyethyl chitosan

MANAS Journal of Engineering
The hydroxypropyl chitosan (HPCH) and hydroxyethyl chitosan (HECH) are multifunctional chitosan derivatives with biocompatible and biodegradable properties. Due to their hydroxypropyl and hydroxethyl groups, they have water solubility, moisture retention, and gelling properties. In this study, the chitosan derivatives HPCH and HECH were obtained in two
Nuran Çelikçi, Cengiz Ayhan Zıba, Mustafa Dolaz, Mehmet Tumer   +3 more
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Fragmentation of Chitosan by Acids [PDF]

The Scientific World Journal, 2013
Fragmentation of chitosan in aqueous solution by hydrochloric acid was investigated. The kinetics of fragmentation, the number of chain scissions, and polydispersity of the fragments were followed by viscometry and size exclusion chromatography. The chemical structure and the degree of N‐acetylation (DA) of the original chitosan and its fragments were ...
Mohammad Reza Kasaai, Joseph Arul, Gérard Charlet   +2 more
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Chitosan and Chitosan Nanoparticles: Parameters Enhancing Antifungal Activity

Molecules, 2023
Chitosan (CS), a biopolymer derived from chitin, is known for strong antifungal activity while being biodegradable, biocompatible, and non-toxic. Because of its characteristic it has been widely used in control of fungal pathogens. Antifungal activity of chitosan can be further enhanced by obtaining chitosan nanoparticles (CSNPs).
Pawel Poznanski, Amir Hameed, Waclaw Orczyk   +2 more
openaire   +3 more sources

Chitosan in Plant Protection [PDF]

Marine Drugs, 2010
Chitin and chitosan are naturally-occurring compounds that have potential in agriculture with regard to controlling plant diseases. These molecules were shown to display toxicity and inhibit fungal growth and development. They were reported to be active against viruses, bacteria and other pests.
Abdelbasset El Hadrami, Fouad Daayf, Lorne R. Adam, Ismaïl El Hadrami   +3 more
openaire   +4 more sources