Different solvent extracts of a red algae, Hypnea flagelliformis, and two brown algae, Cystoseira myrica and Sargassum boveanum, which were collected from the Persian Gulf coast were subjected to different bioassays, including: 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay, antibacterial and antifungal activity by thin layer chromatography (TLC)-bioautography, agar disc dif...

This entry describes applications of known indicators and dyes as new visualizing reagents and various visualizing systems as well as photocatalytic reactions and bioautography method for the detection of bioactive compounds including drugs and compounds isolated from herbal extracts. Broadening index, detection index, characteristics of densitometric band, modified contrast index, limit of det...

Two new garcinia acid derivatives, 2-(butoxycarbonylmethyl)-3-butoxycarbonyl-2-hydroxy-3-propanolide and 1',1"-dibutyl methyl hydroxycitrate, were isolated from the fruits of Garcinia atroviridis guided by TLC bioautography against the fungus Cladosporium herbarum. The structures of these compounds were established by spectral analysis. The former compound represents a unique beta-lactone struc...

Ethanolic extracts of 45 Indian medicinal plants traditionally used in medicine were studied for their antimicrobial activity against certain drug-resistant bacteria and a yeast Candida albicans of clinical origin. Of these, 40 plant extracts showed varied levels of antimicrobial activity against one or more test bacteria. Anticandidal activity was detected in 24 plant extracts. Overall, broad-...

Background & Aims: Today, the emergence of antimicrobial resistance against conventional antibiotics is increasing. Many researchers consider plants with antimicrobial properties as a good alternative. In this study, the antimicrobial activity of Ajuga chamaecistus Ging. Subsp. Scoparia (Bioss) Rech. f. on 8 bacterial strains wasinvestigated. Methods: The leaf extract was prepared by methanolic...

For more than 1000 years green tea has been used in China and Japan as a medical herb and a healthful beverage. The traditional Chinese medicine has recommended this plant for headaches, body aches and pains, digestion, depression, detoxification, as an energizer and, in general, to prolong life. Tea is made from young shoots and leaves of the plant Camellia sinensis (Willson and Clifford 1992;...

Gy. Horváth: Department of Pharmacognosy, Medical School, University of Pécs, Rókus u. 2., H-7624 Pécs, Hungary B. Kocsis: Institute of Medical Microbiology and Immunology, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary É. Lemberkovics and A. Böszörményi: Institute of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Üllői út 26., H-1085 Budapest, Hungary P.G....

Different solvent extracts of a red algae, Hypnea flagelliformis,and two brown algae, Cystoseira myrica and Sargassum boveanum, collected from the Persian Gulf coast were subjected to different bioassays including: 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay, antibacterial and antifungal activity by thin layer chromatography (TLC)-bioautography, agar disc diffusion (ADD) ...