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‘Biotech’ Category

We read about radioactivity and its possible hazards in a previous post. We also learnt about a bacterium Deinococcus radiodurans and its ability to survive high intensity radiation, which is otherwise lethal to all life forms. This article features the applications of the strain in bioremediation of radioactive waste as well as sites.

Solid state fermentation (SSF) is a technology which is used for cultivation and production of micro-organisms onto a solid surface in presence of very less or no free water. The solid substrate used in SSF resembles the natural habitat of some of the microbes. The substrate which are used in this technology are mostly of two types, one is nutritional substrate and other is inert material. In case of natural substrates, the substrate itself provides the required nutrients for growth and development of the microbes. Commonly used substrate are cereal husk, oil cakes, residual biomass generated in agriculture sector, etc. Inert materials are the one which provides supports for the microbial adherence on its surface. The inert materials have to be provided with additional source of nutrients.some of the commonly used inert materials are silica, hydrated magnesium silicate salts like Talc, Polyurathrane foam, etc.

“When one tugs at a single thing in nature, he finds it attached to the rest of the world”

-John Muir

We often wonder of the world beyond our skies, heavenly bodies and extra terrestrial life; but we seldom stop and think of the bountiful universe beneath our feet. We have this universe to thank, for the food we eat, the clean air we breathe, quite literally for our very existence. Along with organic matter, decaying material and inorganic components of the soil, are present billions of lively microbes that are responsible for the continuos replenishment of our soils.

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