High Quality Content by WIKIPEDIA articles! Polyprenols are natural long-chain isoprenoid alcohols of the general formula H-(C5H8)n-OH where n is the number of isoprene units. Any prenol with more than 4 isoprene units is a Polyprenol. Polyprenols play an important function acting as natural bioregulators and are found in small quantities in various plant tissues. Dolichols, which are found in all living creatures, including man, are their 2,3-dihydro derivatives. Polyprenols have been researched in many leading universities and laboratories for more than 30 years. Interest has been strongest in Russia, Europe, Japan, India and the United States. In the early 1930s, a scientific team at the Forest Technical Academy in St Petersburg, Russia led by Professor Fyodor Solodky, the founder of Forest Biochemistry, and Dr Asney Agranet, began research into the composition of conifer tree needles. They were intrigued by the trees ability to remain disease free in extremes of temperature ± 40 degrees Celsius.

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