Extraction of tannin by Acacia mearnsii with supercritical fluids

In vitro effect of condensed tannin extract from acacia (Acacia mearnsii) on gastrointestinal nematodes of sheep.

The aim of this study was to determine the inhibitory effects of condensed tannin extract from acacia on the feeding of first-stage larvae (L1) of Haemonchus contortus, Trichostrongylus vitrinus and Teladorsagia circumcincta. The experiment was developed such that the inhibition of feeding for each of the nematode species could be evaluated. L1 recovered from fecal samples from a donor with mon...

Tannic extract potential as natural wood preservative of Acacia mearnsii.

High toxicity of the preservatives most frequently used in wood treatment and the resulting risks of handling pose a threat to small producers and to the environment. In an attempt to mitigate these problems, the present study was conducted with the objective of evaluating the preservative effect of tannic extract on biodeterioration of Acacia mearnsii wood. For this purpose, untreated and pres...

Supercritical Fluids for Cleaning & Extraction of Medical Components

Polymer Processing with Supercritical Fluids

Supercritical fluids have a unique and valuable potential for the enhanced processing of many materials. This review describes research in the applications of supercritical fluids to polymer processing. The ability of supercritical carbon dioxide to swell and plasticize polymers is crucial to the impregnation, extraction, and modification of polymeric materials. This plasticization also reduces...

Application of Supercritical Fluids

Many advantages of supercritical fluids come from their interesting or unusual properties which liquid solvents and gas carriers do not possess. Such properties and possible applications of supercritical fluids are reviewed. As these fluids never condense at above their critical temperatures, supercritical drying is useful to prepare dry-gel. The solubility and other important parameters as a s...