Lactone fromInula germanica

Effect of insulin on Blattela germanica Linnacus.

OBJECTIVE To determine the sensitivity of Blattela germanica L (B. germanica L) to differenct doses of insulin. METHODS B. germanica were reared in laboratory conditions at (25±2) °C and (50±5)% relative humidity (RH), and exposure period of 12:12 L/D. Different concentrations, viz. 5, 10, 15, 20 and 25 µ of insulin N, R, (N+R) were prepared and injected to 10 treated cockroaches with another...

The Antiinflammatory Sesquiterpene Lactone

Cognitive Plasticity in Foraging Vespula germanica Wasps

Vespula germanica (F.) (Hymenoptera: Vespidae) is a highly invasive social wasp that exhibits a rich behavioral repertoire in which learning and memory play a fundamental role in foraging. The learning abilities of these wasps were analyzed while relocating a food source and whether V. germanica foragers are capable of discriminating between different orientation patterns and generalizing their...

Cytotoxic isoferulic acidamide from Myricaria germanica (Tamaricaceae)

Tamgermanitin, a unique N-trans-Isoferuloyltyramine, together with the hitherto unknown polyphenolics, 2,4-di-O-galloyl-(α/β)-glucopyranose and kaempferide 3,7-disulphate have been isolated from the leaf aqueous ethanol extract of the false tamarisk, Myricaria germanica DESV. In addition, 18 known phenolics were also separated and characterized. All structures were elucidated on the basis of de...

Microbial β‐lactone natural products

Microbial b-lactone natural products An annotated selection of World Wide Web sites relevant to the topics in microbial biotechnology. Obafluorin is an antimicrobial b-lactone compound produced by the bacterium Pseudomonas fluorescens. In this study, the compound was synthesized, analysed chemically and tested for biological activity. The triedimycins are a class of spiro b-lactones. They are n...