Antibacterial activity of crude extracts and pure compounds isolated from Vernonia galamensis leaves

Determination of the antibacterial activity of crude extracts and compounds isolated from Hortia oreadica (Rutaceae) against oral pathogens

Extracts from Hortia oreadica afforded four dihydrocinnamic acid derivatives, isolated from the n-hexane extract, as well as limonoid guyanin and the furoquinoline alkaloid dictamnine, both isolated from the dichloromethane extract. The extracts and the isolated compounds were tested against some oral pathogens, so as to investigate their antibacterial activity. The results showed that the n-he...

In vitro Antibacterial Activity of Crude Extracts Produced by Endophytic Fungi Isolated from Piper hispidum Sw

Article history: Received on: 18/08/2012 Revised on: 09/09/2012 Accepted on: 05/10/2012 Available online: 29/10/2012 Endophytic fungi inhabit the interior of plants without causing apparent harm to them and constitute an alternative for the control of human pathogens, since they can synthesize bioactive compounds. The plant Piper hispidum Sw. has several medicinal properties and harbors a diver...

Evaluation of the Agronomic Performance of Vernonia (Vernonia galamensis) Germplasm

Autodigestion in crude extracts of soybean leaves and isolated chloroplasts as a measure of proteolytic activity.

Two methods of measuring protein breakdown resulting from self-digestion during incubation in extracts of soybean leaves were examined. The release of free alpha-amino-nitrogen was measured with ninhydrin, and the disappearance of the large subunit of ribulose bisphosphate carboxylase (RuBPcase) was followed with sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Rates of protein breakd...

detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...