Minggu, 14 Juni 2015

Bacillus licheniformis



Agrotekno Lab
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Jual Culture Bakteri Bacillus licheniformis

Bacillus licheniformis is a bacterium commonly found in the soil. It is found on bird feathers, especially chest and back plumage, and most often in ground-dwelling birds (like sparrows) and aquatic species (like ducks). It is a gram-positive, mesophilic bacterium. Its optimal growth temperature is around 30°C, though it can survive at much higher temperatures. The optimal temperature for enzyme secretion is 37°C. It can exist in spore form to resist harsh environments, o
r in a vegetative state when conditions are good. Scientists are currently exploring its ability to degrade feathers for agricultural purposes. Feathers contain high amounts of non-digestible proteins, but researchers hope that, through fermentation with B. licheniformis, they can use waste feathers to produce cheap and nutritious feather meal to feed livestock. Ecological research is also being done looking at the interaction between plumage colors and B. licheniformis activity, and the consequences thereof. Feather degrading bacteria may have played an important role in the evolution of molting, and patterns in feather coloration (Gloger's Rule).

Bacillus licheniformis degrades feathers of parrots and other birds, especially white feathers. Red feathers with high levels of psittacofulvin are more resistant.Bacillus licheniformis is cultured in order to obtain protease for use in biological laundry detergent. The bacterium is well adapted to grow in alkaline conditions, so the protease it produces can withstand high pH levels, making it ideal for this use - the other components of detergents create an alkaline pH. The protease has a pH optimum of between 9 and 10 and is added to laundry detergents in order to digest, and hence remove, dirt made of proteins. This allows for much lower temperatures to be used, resulting in lower energy use and a reduced risk of shrinkage of garments or loss of colored dyes.Bacillus licheniformis can be used in synthesis of gold nanocubes. Researchers have synthesized gold nanoparticles with sizes between 10 to 100 nanometres. Gold nanoparticles are usually synthesized at high temperatures, in organic solvents and using toxic reagents. The bacteria produce them in much milder conditions.
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