Soil frequently receive a wide range of contaminants from industrial activities, sewage sludge , disposal , metal processing and energy production and many cases remediations both expensive and intrusive to the ecosystem, phytoremediation is the use of plant's and plant processes to remove degrade or render harmless hazardous materials present in the soil or groundwater. This emerging technology may offer a cost-effective, non-intrusive, and safe alternative to conventional soil cleanup techniques by using the ability of certain tree; shrub and grass species to remove degrade or immobilize harmful chemicals from the soil. A plant management remediation strategy for Se was developed base upon research from Banuelos and Meek (1990) and other earlier research that showed that certain exotic plants, e.g., Astragalus, stanteya, accumulate high concentration's of Se when grown on seleneferous
The present attempt has been made to characterize extracted sericin from the waste of sericulture industry and explore its pharmaceutical applications. Sericin was extracted by alkali degumming techniques (0.5 % sodium carbonate) and evaluated for chemical composition (including protein, ash, and amino acids), physical properties, surface topography, P-XRD, thermal study (DSC), and circular dichroism (CD) analysis. The molecular weight distribution of sericin was also investigated by sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE). The results suggested that a preliminary investigation showed that presence of proteins and amino acids in sericin and confirmed from UV, FTIR, and 1 H-NMR study. Interestingly, sericin particles showed slightly corrugated hollow spheres with several wrinkles. From P-XRD and DSC data, sericin is completely amorphous in nature and it has thermal stability. Sericin protein was random coil confirmation indicating no change on secondary structure while extraction process and confirmed from CD. SDS-PAGE revealed that a major fraction of sericin was distributed around 25 kDa and the minor fraction was distributed around 220 kDa. Results suggested that sericin can be a valuable excipients in the pharmaceutical industry.
Sunflower (Helianthus annuus L.) is an important oilseed crop. Several pest are known to attack sunflower crop. Sunflower cultivation in Marathwada region (M.S., India) has recently been threatened by a new pest, the stem borer Nupserha sp. near vexator (Pascoe). The stem borer appeared on sunflowers at Latur (M.S.) for the first time in India in 1993. Severe incidence of the stem borer was recorded in Marathwada region since 1998 which led to poor grain filling and ultimately yield loss to the extent of 30%. This situation led prompted us to test several conventional insecticides with the objective of finding a chemical that effectively controls the stem borer. A field study was carried out at Oilseeds Research Station, Latur (M.S.), during Kharif 2004-06. Six conventional insecticides were tested along with the untreated control. Application of quinalphos was found to be most effective and economic in controlling the stem borer, followed by chlorpyriphos and endosulfan.
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