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Ag(I)-containing ethylcellulose (EC) films suitable as antbacterial packaging materials have been prepared and fully characterized. Different preparation methods, including the use of green casting solvents, are proposed. The Ag(I) acylpyrazolonato complexes, [Ag(Q )(L)], L=benzylimidazole (Bzim) and L=ethylimidazole (EtimH), used as active additives, display different modes of interactions with EC, depending on their structural features. A thorough investigation of the EC liquid-crystalline lyotropic phase and its changes with the introduction of silver additives, has been conducted, revealing either the inclusion of complex molecules into the inner structure of the EC matrix or their dispersion on its surface. Moreover, the bactericidal activity of the prepared Ag(I) films seems to be related to the interaction between silver additives and the polymeric EC matrix. Indeed, the EC-2b films show a particularly good performance even with a low silver content, with a relative bacterial killing of about 100 %. Tests for Ag(I) migration have been performed by using three food stimulants under two assay conditions. Low values of silver release are recorded, particularly at low concentration of silver content, in the case of all new prepared Ag(I) films.
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One of the many challenges in the study of chiral nano-surfaces and nano-films is the design of accurate and controlled nanoscale films with enantioselective activity. Controlled design of chiral nano...
In general, high-purity monoclinic VO2 (VO2(M)) was considered as a prerequisite for obtaining VO2-based thermochromic coatings with high performance. The co-existence of other vanadium oxides (such a...
In this study, thin films of polymer poly(methyl methacrylate) were prepared using a drop casting method. Two newly synthesized aldehyde derivatives, 2-bromomalonaldehyde and 5,6-dihydroimidazo[2,1-b]...
An enantiomerically pure (R)-2-methylpyrrolidine-based anilino squaraine crystallizes in two chiral polymorphs adopting a monoclinic C2 and an orthorhombic P2 2 2 structure, respectively. By various t...
The thermo-oxidative behavior crucial to the applicability of ethylcellulose (EC) oleogels is characterized. Not only did we take into account the composition of the gel network in relation to textura...
Nearly all migraine sufferers report sensitivity to light during a headache and a significant proportion of sufferers report light sensitivity between attacks. Light is also a common trigg...
the main objective of this study is to evaluate staining potential and Caries Arresting Effect of silver diamine fluoride⁄potassium Iodide and silver diamine fluoride in carious anterior...
The purpose of this study is to determine whether oral topic silver nanoparticles are effective to reduce potential pathogen microbial loads in mechanical ventilation patients.
Silver nitrate treatment of Bartholin's cyst or abscess will be compared to marsupialization treatment. It is expected that silver nitrate treatment is effective, simple, inexpensive and ...
This study is being conducted to test whether the use of diammine silver fluoride (also called silver diamine fluoride) hardens the cavity sufficiently so that it arrests.
The use of silver, usually silver nitrate, as a reagent for producing contrast or coloration in tissue specimens.
Silver. An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA.
Functions, equipment, and facilities concerned with the preparation and distribution of ready-to-eat food.
Works consisting of nonfiction films and video designed to teach, instruct, or train. (From Moving Image Materials: Genre Terms, 1988)
Any aspect of the operations in the preparation, transport, storage, packaging, wrapping, exposure for sale, service, or delivery of food.
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...
An assay is an analytic procedure for qualitatively assessing or quantitatively measuring the presence or amount or the functional activity of a target entity. This can be a drug or biochemical substance or a cell in an organism or organic sample. ...