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Friday, April 28, 2017

Scientists have proposed to protect from the sun wood waste


Effective natural protector against ultraviolet radiation experts found the American chemical society. It was the substance lignin, which is contained in the cells of nearly all plants and some algae, giving them strength, according to EurekAlеrt.


photo: Roman Orlov

Most sunscreens today contain synthetic compounds that have a repellent/f-rays. Specialists been looking for an ingredient for cream, created by nature itself, which would be also much more effective than “chemistry”. What did not scientists added to creams, to meet this need: and green coffee, and soy, and papaya. In the end, a group of scientists decided to test this as lignin — a byproduct of the paper industry, which, like cellulose, is plant biomass, but in contrast it is widely in the industry is not being used.

Researchers have tested as u/f-protection soluble form of lignin. It turned out that only one percent of this compound in the cream increased the degree of intensity of a UV filter (SPF) from 15 to 30. Lotion with 10% lignin had SPF protection 92, but the excess amount of hydrophilic lignin made the final product too viscous, difficult to use.

As reported by “MK” at the Institute of theoretical and experimental Biophysics RAS, of course the products of processing of vegetable raw materials as the raw material itself, for example, cotton, which is made of fabric, are the best natural protection from ultraviolet radiation. Despite the fact that the technology that was offered by the specialists from the USA, needs some work, it can really lead to the creation of a cream based on lignin. Natural cosmetics with increased SPF above 30 doesn’t exist, ” perhaps the lignin will help to overcome this barrier.

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