The “Otnes7″ called species absorbs almost the full range of hazardous UV-A wavelengths.
Ironically, cool in Trondheim Fjord, researchers found a bacterial strain that knows very well to protect themselves against the harmful UV-A rays of the sun. In contrast to the shorter wavelength UV-B radiation UV-A light penetrates deep into the skin. You age faster, increases the risk of cancer. Unfortunately, most modern sunscreens act in this health concern spectral poorly.
The fjord with the bacteria, the scientists now want to change. The “Otnes7″ called species produces a dye called Sarcinaxanthin, which belongs to the class of carotenoids. It absorbs almost the full range of UV-A wavelength of 325 nanometers, even into the visible blue 475-nanometer range. Conventional UV-A protection fabrics each cover only a small spectral region. Otnes7 belongs to the group of Micrococcus luteus bacteria, of which there are numerous variations in all habitats. Some move on the human skin. The bacteria rested along with about 1500 other samples from the Trondheim fjord in the biobank of the public research institute SINTEF. As Audun Goksøyr, CEO of the start-up company Promar AS, one day, by chance saw the light absorption spectra dortiger graphics bacteria, his interest was piqued. It tries quite some time now, to isolate useful pigments from bacteria, but so far with limited success. Roman Netzer, a German biologist working at SINTEF, and his PhD student Marit Hallvardsdotter Stafsnes then took the treasures in the bacterial Biobank closer look and came on as Otnes7. Meanwhile Netzer and Stafsnes have elucidated the biosynthesis of Sarcinaxanthin, the gene sequence responsible for this isolated and transferred them into E. coli bacteria, the workhorses of the bio-industry. Before Netzer client Goksøyr but with the new sunscreen pigments a-rising in the cosmetics market, he wants to put the E. colis on a socially acceptable diet. Because the sugar from which the bacteria live, so far comes from grain that actually serves the human diet. <- AUTHOR MARKER DATA BEGIN -> ( Han! ns-J Neubert .) / <- RSPEAK_STOP -> (bsc)<- RSPEAK_START -> <- AUTHOR DATA MARKER !-END ->
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