Bioremediation is a promising technique that can be used to decrease the environmental discharge of Heavy Metal (HM) such as copper, and zinc. Although studies have addressed cytotoxic effects HMs, however, effect HMs on geometry bacterial species Spirulina platensis (S. platensis) remains unknown. Quantitative analysis parameters cell perimeter, count, distribution shall greatly improve effici...

Two novel antifungal antibiotics, named dorrigocin A and B have been isolated from the fermentation broth and mycelium of Streptomyces platensis subsp. rosaceus. These closely related compounds were separated from one another by countercurrent chromatography on an Ito coil planet centrifuge. The structures of the dorrigocins were determined by NMR and IR spectroscopy and mass spectrometry. Each...

Thirty-eight microorganisms were screened for their ability to produce metabolites of the semisynthetic alkaloid, lergotrile. A total of five microorganisms were found to biotransform lergotrile, and N-desmethyl lergotrile was detected as the principal metabolite with most organisms. Streptomyces platensis (NRRL 2364) appeared to form the metabolite in highest yield, and a preparative-scale con...

Background: Contamination of feeds with cadmium leads to oxidative stress in vital tissues such as gills and affects the fish survival. Therefore, an increase in the capacity of the antioxidant defense system and detoxification system of fish may reduce adverse effects of pollutants. This study investigated the protective effects of microalga Spirulina platensis against oxidative stress in gill...

In order to find out optimum culture condition for algal growth, the effect of light irradiance and temperature on growth rate, biomass composition and pigment production of Spirulina platensis were studied in axenic batch cultures. Growth kinetics of cultures showed a wide range of temperature tolerance from 20 °C to 40 °C. Maximum growth rate, cell production with maximum accumulation of chlo...

Spirulina platensis is a blue green algae containing vital nutrients (proteins, lipids and carbohydrates), minerals (zinc, magnesium, manganese, selenium), vitamins (β–carotene, riboflavin, cyanocobalamine, α-tocopherol), and α–linoleic acid, reported to promote physical health, improve defense mechanisms of the human body and enhance longevity of life. These attributes are similar to the moder...

in this experiment, a total of 128 hy-line w36 hens at 63 weeks of age were used. the hens were put at random into 4 treatment groups (4 replicates and 32 hens per treatment) and were fed four different diets: three diets with different levels of spirulina (1.5, 2.0 and 2.5%) and one control group based on wheat and soybean meal. all birds were housed in commercial cages, had ad libitum access ...

Spirulina platensis, is a photosynthetic, filamentous, spiral-shaped, multicellular and bluegreen micro alga. As it contains chlorophyll a, like higher plants, botanists classify it as a micro alga belonging to Cyanophyceae class; but according to bacteriologists it is a bacterium due to its prokaryotic structure. Mexicans (Aztecs) started using this microorganism as human food. Its chemical co...

Seven new macrolides having a 12-membered ring, which we termed pladienolides, were isolated from the fermentation broth of Streptomyces platensis Mer-11107. Six of the seven pladienolides inhibited hypoxia-induced reporter gene expression controlled by human VEGF promoter with IC50 values of 0.0018-2.89 microM. They also demonstrated growth-inhibitory activity against U251 human glioma cells i...

Textile wastewater discharge is one of the big aquatic pollution problem in Indonesia. Although treatment had been applied to reduce the concentration of pollutants, the textile wastewater discharge often still keep the concentration of pollutant that is above the limit for the usage of the river water. Phycoremediation, the use of microalgae to clean up the wastewater, had been developed and a...