Water Soluble Usnic Acid-Polyacrylamide Complexes with
Polyacrylamide/usnic acid (UA, Sigma Aldrich,, St. Louis, MO, USA) (M = 344 g/mol, pKa 3 = 4.4, pKa 9 = 8.8, pKa 7 = 10.7, Scheme 1b) complexes were prepared by dissolving in water the pAcDEDs, having different molecular weights, with the drug at the following polymer/UA weight ratios, 70/30, 60/40, 50/50 and 30/70. In particular, 50 mg of UA
Usnic acid, a potent antimicrobial and anticancer agent, poorly soluble in water, was complexed to novel antimicrobial polyacrylamides by establishment of strong acidic-base interactions. Thermal and spectroscopic analysis evidenced a molecular dispersion of the drug in the polymers and a complete drug/polymer miscibility for all the tested compositions. The polymer/drug complexes promptly
Water soluble usnic acid-polyacrylamide complexes with
Water soluble usnic acid-polyacrylamide complexes with enhanced antimicrobial activity against Staphylococcus epidermidis. Iolanda Francolini Department of Chemistry, "Sapienza" University of Rome, Piazzale A. Moro 5, Rome 00185, Italy.
Water Soluble Usnic Acid-Polyacrylamide Complexes with Enhanced Antimicrobial Activity against Staphylococcus epidermidis Iolanda Francolini, Vincenzo Taresco, Fernanda Crisante, Andrea Martinelli, Lucio D’Ilario and Antonella Piozzi * Department of Chemistry, “Sapienza” University of Rome, Piazzale A. Moro 5, Rome 00185, Italy;
Water Soluble Usnic Acid-Polyacrylamide Complexes
Water Soluble Usnic Acid-Polyacrylamide Complexes with Enhanced Antimicrobial Activity against Staphylococcus epidermidis.pdf Available via license: CC BY 3.0 Content may be subject to copyright.
Usnic acid, a potent antimicrobial and anticancer agent, poorly soluble in water, was complexed to novel antimicrobial polyacrylamides by establishment of strong acidic-base interactions. Thermal and spectroscopic analysis evidenced a molecular dispersion of the drug in the polymers and a complete drug/polymer miscibility for all the tested
Water Soluble Usnic Acid-Polyacrylamide Complexes with
Usnic acid, a potent antimicrobial and anticancer agent, poorly soluble in water, was complexed to novel antimicrobial polyacrylamides by establishment of strong acidic-base interactions. Thermal and spectroscopic analysis evidenced a molecular dispersion of the drug in the polymers and a complete drug/polymer miscibility for all the tested
The discovery of the metal salen-catalyzed asymmetric ring-opening (ARO) of epoxides is chronicled. A screening approach was adopted for the identification of catalysts for the addition of TMSN3 to meso-epoxides, and the chiral (salen)CrN3 complex was identified as optimal. Kinetic and structural studies served to elucidate the mechanism of catalysis, which involves cooperative activation of
US 2010/0310476 A1 - Carriers, Formulations, Methods
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34th Annual Meeting of the Arbeitsgemeinschaft Dermatologische Forschung (ADF) Freiburg/Breisgau, Germany – March 8–10, 2007 to investigate the impact of water-soluble factors from grass pollen France As the most distal part of the nervous system, the subepidermal nerve plexus is located in the papillary dermis. Its network of fine
Carriers, formulations, methods for formulating unstable
The application is a continuation under 35 U.S.C. §120 of U.S. application Ser. No. 12/795,164, filed Jun. 7, 2012, which is a continuation of PCT/IB2008/03932, filed Dec. 8, 2008, which claims the benefit of priority under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 61/103,500, filed on Oct. 7, 2008, entitled “Oil and Liquid Silicone Carriers and Formulations for External
CROSS REFERENCE TO RELATED APPLICATIONS. This application is a continuation under 35 U.S.C. §120 of PCT/IB2008/03932, filed on Dec. 8, 2008, which claims priority under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 61/012,414, filed on Dec. 7, 2007, entitled “Carriers, Formulations, Methods for Formulating Unstable Active Agents for External Application and Uses Thereof
- Is polyaluminum chloride a good coagulant for water treatment?
- Polyaluminum chloride (PAC) is highly effective coagulant for water treatment over conventional coagulants because of low dosage requirement, shorter flocculation time, smaller amount of sludge, high efficiency and low aluminum residual in treated water [ 6 ].
- What is Poly Aluminum Chloride used for?
- Poly aluminum chloride is used for water treatment. With the properties of adsorption, aggregation and precipitation, it is an excellent coagulant in sewage treatment, industrial wastewater treatment, drinking water treatment, and circulating water treatment, etc. It is also used in the papermaking industry.
- How to prepare polyaluminum chloride (PAC G)?
- In order to overcome the drawbacks, the fresh aluminum hydroxide gels were proposed to prepare the polyaluminum chloride (PAC G) in this study. The optimal preparation condition of PAC G was obtained by optimizing the preparation conditions including temperature, time and acid concentration.
- Does pH affect the performance of polyaluminum chloride (PAC)?
- The performance of PAC was dependent on pH. The synthesized PΑC was efficient coagulant for water treatment. The present work was aimed to synthesis of polyaluminum chloride (PAC) using calcium oxide as a basification agent and optimization of process parameters on the yield of medium polymer species in PAC.
