نتایج جستجو برای: lyophilization
تعداد نتایج: 938 فیلتر نتایج به سال:
Nature has developed an impressive repertoire of metal-based enzymes that perform complex chemical reactions under moderate conditions. Catalysts that produce molecular hydrogen (H2) are particularly promising for renewable energy applications. Unfortunately, natural and chemical H2-catalysts are often irreversibly degraded by molecular oxygen (O2). Here we present a straightforward procedure b...
Tilmicosin (TLM) is an important antibiotic in veterinary medicine with low bioavailability and safety. This study aimed to formulate and evaluate physicochemical properties, storage stability after lyophilization and antibacterial activity of three TLM-loaded lipid nanoparticles (TLM-LNPs) including solid lipid nanoparticles (SLNs), nanostructured lipid carriers (NLCs) and lipid-core nanocapsu...
Lyophilization, the removal of water by freezing and then volatilization at low pressure and temperature, has been employed as a standard long-term preservation method for many filamentous fungi. The method outlined involves the use of standard shelf freeze-drying and skimmed milk as a suspending solution/lyoprotectant. This approach has been employed to freeze-dry the majority of the 50,000 fu...
The advantages of freeze-drying are obvious. It is a convenient method for the preservation and long-term storage of a wide variety of microorganisms. However, special precautions are needed for the preservation of microorganisms sensitive to desication, light, oxygen, osmotic pressure, surface tension and other factors. During several years of experimentation I have developed various new metho...
The difficulties experienced in keeping T. pallidum alive for carrying out the immobilization test have led us to study during the last 4 years the possibility of ensuring the keeping quality of the survival medium by means of lyophilization. The dryfreezing method was discovered by Wurtz and Camus (1919). Storage of large quantities of the medium is thereby made possible without question of ti...
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