AIMS Bacterial biofilms generally are more resistant to stresses as compared with free planktonic cells. Therefore, the discovery of antimicrobial stress factors that have strong inhibitory effects on bacterial biofilm formation would have great impact on the food, personal care, and medical industries. METHODS AND RESULTS Salicylate-based poly(anhydride esters) (PAE) have previously been sho...

The effects of rootstock on the volatile flavour components of page mandarin juice and peel were investigated in this study. Juice flavour components were extracted by using Poly dimethyl silaxane  membranes( PDMS ) and eluted by pentane dichloromethane and then analyzed by GC-FID and GC-MS. Peel flavour compone...

Objectives: The objective of this study was to analyze the fatty acid content, antioxidant, and antibacterial activities of hydro-methanolic extract of Adonis wolgensis L. (A. wolgensis L.) growing wild in north of Iran. Materials and Methods: Oils of A. wolgensis L. was obtained by means of Soxhlet apparatus from leaves and stems. Methyl esters were derived from the oily mixtures by trans-este...

A biodegradable poly(anhydride-ester) was synthesized by melt condensation polymerization of the acetylated monomer to yield a novel polymeric prodrug. The polymer we have synthesized is composed of alkyl chains linked by ester bonds to aromatic moieties, specifically salicylic acid--the active component of aspirin. With the medicinal properties attributed to salicylic acid and the ease of meta...

Non-ionic surfactants, poly oxyethylene sorbitan adipose acid esters (polysorbate), were used in this work to explore the consequence of temperature on CMC throughout a wide range. The phase separation model is analyze enthalpy and entropy micelle conformation. Du Nöuys ring was determine results' face pressure. standards derived after strong break down surfactant attention plots pressure vs. l...

nanofibrous scaffolds produced by electrospinning have attracted much attention, recently. aligned and random nanofibrous scaffolds of poly (vinyl alcohol) (pva), poly (ε-caprolactone) (pcl) and nanohydroxyapatite  (nha) were fabricated by electrospinning method in this study. the composite nanofibrous scaffolds were subjected to detailed analysis. morphological investigations revealed that the...

Polymers which can respond to externally applied stimuli have found much application in the biomedical field due to their (reversible) coil-globule transitions. Polymers displaying a lower critical solution temperature are the most commonly used, but for blood-borne (i.e., soluble) biomedical applications the application of heat is not always possible, nor practical. Here we report the design a...

We report the preparation and single-molecule observation of a high molecular weight C60-end-capped, stereoregular poly(methyl methacrylate) (PMMA-C60) with a precisely controlled structure. The highly isotactic PMMA-C60 (mm = 98%) with a narrow molecular weight distribution was synthesized by the stereospecific anionic living polymerization of tert-butyl methacrylate followed by end-capping wi...

We designed poly(β-amino esters) (PBAEs) bearing both UV light- and pH-sensitive groups and used PBAEs to prepare nanoparticles (NPs) that can be utilized for on-demand burst release of guest molecules in response to multiple triggers. Due to the presence of the photo-cleavable group in each repeating unit of PBAE, rapid release of encapsulated model drug could be achieved even with exposures t...

The natural amino acid L-tyrosine is a major nutrient having a phenolic hydroxyl group. This feature makes it possible to use derivatives of tyrosine dipeptide as a motif to generate diphenolic monomers, which are important building blocks for the design of biodegradable polymers. Particularly useful monomers are desaminotyrosyl-tyrosine alkyl esters (abbreviated as DTR, where R stands for the ...