In vivo EPR oximetry is a powerful minimally invasive method that allows the measurement of oxygen in tissues through the use of a paramagnetic probe. In the present study, we investigated new strategies for preparing biocompatible inks containing carbon black particles (Printex U), which could be used as oxygen sensors. The carbon black particles were dispersed in solutions of biocompatible po...

Abstract Cellulose ethers, like methyl cellulose (MC) or hydroxypropyl (HPC), are widely used in conservation. They also occur as additives and rheology modifiers various products dispersions gels. Do such release harmful volatile organic compounds (VOC) during their accelerated aging? A mass testing series utilizing the Oddy test of 60 commercial ethers ranks safe for permanent use (P, no corr...

The matrix tablets of diltiazem hydrochloride were prepared by direct compression using hydroxypropyl methyl cellulose (HPMC) and various amounts (2.5%, 5.0%, 10% and 20%) of citric acid, malic acid and succinic acid. The characterization of physical mixture of drug and organic acids was performed by Infra-red spectroscopy. An organic acid was incorporated to set up a system bringing about grad...

The present study deals with the formulation and of oromucosal tablets Rizatriptan Benzoate (RB) using different bioahdesive polymer. Nine formulations were prepared by direct compression method. Hydroxypropyl methyl cellulose (HPMC K4M), Gum acacia Sodium Alginate used as buccal mucoadhesive Ethyl (EC) an impermeable backing layer. FTIR Studies showed no interaction drug, polymer excipients. 3...

The aim of this research is to quantify the competitive adsorption of a whey protein concentrate (WPC) and hydroxypropyl-methyl-cellulose (HPMC so called E4M, E50LV and F4M) at the air-water interface by means of dynamic surface tensiometry and Brewster angle microscopy (BAM). These biopolymers are often used together in many food applications. The concentration of both protein and HPMC, and th...

The objective of the present study was to formulate hydrodynamically balanced systems (HBSs) of theophylline as single unit capsules. They were formulated by physical blending of theophylline with hydroxypropyl methyl cellulose, polyethylene oxide, polyvinyl pyrrolidone, ethyl cellulose, liquid paraffin, and lactose in different ratios. These theophylline HBS capsules were evaluated for weight ...

INTRODUCTION As its name suggests, Clostridium difficile–associated diarrhea (CDAD) is a common infection caused by the toxinproducing bacterium C. difficile. The infection can result in inflammation and cellular damage in the colon, leading to potentially severe complications, including enterocolitis with toxic megacolon, and possible death.1–3 CDAD accounts for more than $1.1 billion in healt...

The incremental elimination or hydroxy functionality in an organosolv lignin by ethylalion or acetylation dramatically innuenced the state of miscibility and resulting morphology or blends prepared with hydroxypropyl cellulose (HPC). A maximum level of interaction between the blend components, as determined from melting point depression, oa:.urred where 23-40-1. or the hydroxy groups were subst...

Froth flotation is an operation currently used for the recovery of Cu from pyrometallurgical smelting slags due its simple and relatively low operational costs. While it has been utilized many decades, may be necessary to develop strategies that improve slags, as unprecedented increase in demand made industrial waste side streams economically relevant sources metals. This study presents a novel...