Layer-by-layer films composed of polysaccharides and poly(amidoamine) dendrimer bearing phenylboronic acid (PBA-PAMAM) were prepared to study the deposition behavior of the films and their stability in buffer solutions and in sugar solutions. Alginic acid (AGA) and carboxymethylcellulose (CMC) were employed as counter-polymers in constructing LbL films. AGA/PBA-PAMAM films were successfully pre...

Diclofenac (DCF) is among the most effective non-steroidal anti-inflammatory drugs (NSAIDs) and at same time one of consumed worldwide. Since ever-increasing use diclofenac poses serious threats to ecosystems, its substantial removal crucial. To address this issue, a variety sorbents have been employed. Herein we present properties two metal organic frameworks, namely [Zr6O4(OH)4(NH2BDC)6]·xH2O...

As reported, the two-component system ColRS is involved in two completely different processes. It facilitates the root colonization ability of Pseudomonas fluorescens and is necessary for the Tn4652 transposition-dependent accumulation of phenol-utilizing mutants in Pseudomonas putida. To determine the role of the ColRS system in P. putida, we searched for target genes of response regulator Col...

The natural and semisynthetic carbohydrates scleroglucan, locust bean gum, tamarind gum (glyloid) and its three sulphate derivatives (GP4311, GP4327 and GP4324), glycogen and its two sulphate derivatives (GP4427 and GP4435), alginic acid and dextran sulphate, were investigated for their inhibitory effect on rubella virus (RV) infection of Vero cells. The neutral polymer scleroglucan and two hig...

When mucoid (alginate-producing) Pseudomonas aeruginosa FRD1 is grown under low oxygen conditions in liquid culture (static), non-mucoid variants appear and eventually predominate. This conversion is not readily observed in aerobic, shaken cultures or static cultures containing the alternative electron acceptor nitrate. In this study, it is shown that the non-mucoid variants that arise under st...

Each of the constituent enzymes of the pathway was present with sufficient activity to account for the observed rate of alginate biosynthesis. The information obtained from this work, together with other biochemical information, e.g. knowledge of the mechanisms of nitrogen fixation and respiration (Yates & Jones, 1974) and of the deposition of poly-8-hydroxybutyrate in A . vinelundii (Dawes & S...