| fatty acid synthase inhibitors from plants: isolation, structure elucidation, and sar studies. | fatty acid synthase (fas) has been identified as a potential antifungal target. fas prepared from saccharomyces cerevisiae was employed for bioactivity-guided fractionation of chlorophora tinctoria,paspalum conjugatum, symphonia globulifera, buchenavia parviflora, and miconia pilgeriana. thirteen compounds (1-13), including three new natural products (1, 4, 12), were isolated and their structures identified by spectroscopic interpretation. they represented five chemotypes, namely, isoflavones, f ... | 2002 | 12502337 |
| chemical and bioactive natural products from microthyriaceae sp., an endophytic fungus from a tropical grass. | in screening for natural products with antiparasitic activity, an endophytic fungus, strain f2611, isolated from above-ground tissue of the tropical grass paspalum conjugatum (poaceae) in panama, was chosen for bioactive principle elucidation. cultivation on malt extract agar (mea) followed by bioassay-guided chromatographic fractionation of the extract led to the isolation of the new polyketide integrasone b (1) and two known mycotoxins, sterigmatocystin (2) and secosterigmatocystin (3). sterig ... | 2014 | 24612068 |
| the dynamics of seed harvesting in early successional communities by a tropical ant, solenopsis geminata. | the neotropical ant, solenopsis geminata, in the moist lowlands of southeastern mexico was most abundant in agricultural fields and early second growth habitats. it was not found within forest habitats.in addition to its foraging for insects and general scavenging, this ant also harvests seeds. under field experimental conditions, a wide variety of small seeds, especially grasses, were taken. nest mound size and number were greatest on plots experimentally seeded to high grass density and low on ... | 1984 | 28311068 |
| prevalence and risk factors associated with gastrointestinal nematode infection in goats raised in baybay city, leyte, philippines. | gastrointestinal parasitism is a serious constraint affecting goat production in the philippines. this study aimed to determine the prevalence and associated risk factors of gastrointestinal nematode infection in goat-populated barangays of baybay city, leyte. | 2016 | 27536034 |
| evaluation of local energy sources in milk production in a tropical silvopastoral system with erythrina poeppigiana. | an experiment was carried out to determine the effect of four local energy sources (sorghum grain, green banana, polished rice, and sugarcane molasses) fed to dairy cows on intake, milk production and composition, and economic viability in a silvopastoral system in costa rica (turrialba). twelve grazing cows (jersey × central american milking creole), with a mean live weight of 332 kg (sd 34), were supplemented with 0.5 kg of dry matter (dm)/100 kg/lw of erythrina porppigiana fresh foliage daily ... | 2015 | 25863954 |
| phytoextraction of lead-contaminated soil using vetivergrass (vetiveria zizanioides l.), cogongrass (imperata cylindrica l.) and carabaograss (paspalum conjugatum l.). | the global problem concerning contamination of the environment as a consequence of human activities is increasing. most of the environmental contaminants are chemical by-products and heavy metals such as lead (pb). lead released into the environment makes its way into the air, soil and water. lead contributes to a variety of health effects such as decline in mental, cognitive and physical health of the individual. an alternative way of reducing pb concentration from the soil is through phytoreme ... | 2007 | 18062482 |