نتایج جستجو برای: flavans

تعداد نتایج: 37  

2015
Sirisha Nagala Raghava Rao Tamanam

Hexane and methanolic oil extracts from five varieties of Artocarpus seeds were studied to explore its suitability for ethno medical uses. Crude hexane and methanolic oils were found to shown good to moderate activity against bacteria, in particular Gram +ve (Bacillus cereus, Bacillus subtilis and Staphylococcus aureus) and Gram-ve (Eschirichia coli and Pseudomonas aeruginosa) and fungal stains...

Journal: :Chemistry of Natural Compounds 1974

Journal: :Agricultural and Biological Chemistry 1986

2013
Suvi Manner Malena Skogman Darla Goeres Pia Vuorela Adyary Fallarero

When single-cell (or suspended) bacteria switch into the biofilm lifestyle, they become less susceptible to antimicrobials, imposing the need for anti-biofilms research. Flavonoids are among the most extensively studied natural compounds with an unprecedented amount of bioactivity claims. Most studies focus on the antibacterial effects against suspended cells; fewer reports have researched thei...

2012
Tara Joy Massad Lee A. Dyer Gerardo Vega C.

One of the goals of chemical ecology is to assess costs of plant defenses. Intraspecific trade-offs between growth and defense are traditionally viewed in the context of the carbon-nutrient balance hypothesis (CNBH) and the growth-differentiation balance hypothesis (GDBH). Broadly, these hypotheses suggest that growth is limited by deficiencies in carbon or nitrogen while rates of photosynthesi...

Journal: :Journal of natural products 1999
H H Ko M H Yen R R Wu S J Won C N Lin

Two new prenylflavans [kazinols Q (1) and R (2)] and five known compounds [kazinols D (3), K (4), and H, 7,4'-dihydroxyflavan (5), and oleanolic acid] were isolated from the root bark of Broussonetia kazinoki. The cytotoxic activity of 1-5 was evaluated against several different cell lines.

Journal: :Chemical and Pharmaceutical Bulletin 1985

Journal: :avicenna journal of phytomedicine 0
daniel lotanna ajaghaku department of pharmacology and toxicology, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria okechukwu obasi department of pharmaceutical and medicinal chemistry, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria blessing ogechukwu umeokoli department of pharmaceutical and medicinal chemistry, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria peter ogbuatu department of pharmaceutical and medicinal chemistry, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria chukwuemeka sylvester nworu department of pharmacology and toxicology, faculty of pharmaceutical sciences, university of nigeria, nsukka, enugu state, nigeria emmanuel emeka ilodigwe department of pharmacology and toxicology, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria

objective: alchornea floribunda leaves are widely used in ethnomedicine for the management of immuno-inflammatory disorders. we investigated the in vivo and in vitro antioxidant activity of the leaf extract, fractions and isolated compounds of a. floribunda.materials and methods: the ethyl acetate fraction of the methanol leaf extract was subjected to several chromatographic separations to isol...

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