Now showing items 1-10 of 222
The status of soil phosphate fractions and the ability of fungi to dissolve hardly soluble phosphates
(Elsevier B.V., 2005-05-01)
Brazilian soils predominantly consist of iron and aluminum oxides and have a low phosphorus content. The present study was carried out in order to assess the status of phosphate fractions in pasture, forest and agricultural ...
Soluble phosphate accumulation by Aspergillus niger from fluorapatite
In order to determine conditions that may provide greater solubilization of insouluble phosphate, the fungus Aspergillus niger was grown in a stationary culture containing modified citrate medium supplemented with 800 mg ...
Factors determining rock phosphate solubilization by microorganisms isolated from soil
Forty two soil isolates (31 bacteria and 11 fungi) were studied for their ability to solubilize rock phosphate and calcium phosphate in culture medium. Eight bacteria and 8 fungi possessed solubilizing ability. Pseudomonas ...
Hydroxyapatite surface solubility and effect on cell adhesion
(Elsevier Science BvAmsterdamHolanda, 2010)
Lead bioaccessibility in soil and mine wastes after immobilization with phosphate
Fluorapatite solubilization by Aspergillus niger in vinasse medium
Fluorapatite solubilization by Aspergillus niger using diluted vinasse at a relative density of 45° Brix may be an alternative to the usual processes for obtaining soluble phosphate. After 13 days of culture, a production ...
Fosfatos de cálcio de interesse biológico: importância como biomateriais, propriedades e métodos de obtenção de recobrimentos
(Sociedade Brasileira de Química, 2010-01-01)
For decades the Hydroxyapatite (HA) was only bioceramic of calcium phosphate system used for bone replacement and regeneration, due to its similarity to the mineral phase of bones and teeth. Because its slow degradation, ...
Involvement of Lysophosphatidic Acid, Sphingosine 1-Phosphate and Ceramide 1-Phosphate in the Metabolization of Phosphatidic Acid by Lipid Phosphate Phosphatases in Bovine Rod Outer Segments
(Springer/Plenum Publishers, 2008-07)
The aim of the present research was to evaluate the generation of [2-3H]diacylglycerol ([2-3H]DAG) from [2-3H]-Phosphatidic acid ([2-3H]PA) by lipid phosphate phosphatases (LPPs) at different concentrations of lysophosphatidic ...
COMPARISON OF CHILEAN NATURAL PHOSPHATIC MINERALS
(Sociedad Chilena de la Ciencia del Suelo, 2006)