Phytoremediation of toxic metals from soil and waste water.

Phytoremediation is an emerging technology, which uses plants and their associated rhizospheric microorganisms to remove pollutants from contaminated sites. This plant based technology has gained acceptance in the past ten years as a cheap, efficient and environment friendly technology especially for removing toxic metals. Plant based technologies for metal decontamination are extraction, volatilization, stabilization and rhizofiltration. Various soil and plant factors such as soil's physical and chemical properties, plant and microbial exudates, metal bioavailability plant's ability to uptake, accumulate, translocate, sequester and detoxify metal amounts for phytoremediation efficiency. Use of transgenics to enhance phytoremediation potential seems promising. Despite several advantages, phytoremediation has not yet become a commercially available technology Progress in the field is hindered by lack of understanding of complex interactions in the rhizosphere and plant based mechanisms which allow metal translocation and accumulation in plants. The review concludes with suggestions for future phytoremediation research.

Magnésio bis-creatina quelato na funçäo muscular e cardíaca / Magnesium bis-creatine chelate in muscular and cardiaca function

O magnésio e a creatina são substâncias fundamentais para a produção de energia. O magnésio tem um papel importante na contração muscular, assim como no equilíbrio do metabolismo de energia e no equilíbrio eletroquímico. A creatina, por outro lado, proporciona elevada síntese de ATP, além disso retarda o aparecimento da fadiga e facilita a recuperação muscular. Os benefícios musculares, tanto do magnésio, quanto da creatina, também podem ser estendidos ao músculo cardíaco. O composto magnésio bis-creatina quelato garante que a creatina e o magnésio alcancem a célula muscular simultaneamente, o que é decisivo para a otimização da performance de ambos nutrientes.