For the most curcumin, be sure to use turmeric rather curry powderâa study analyzing curcumin content in 28 spice products described as turmeric or curry powders found that pure turmeric powder had the highest concentration of curcumin, averaging 3.14% by weight.
There is another type of octane rating, called Motor Octane Number (MON), or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load as it is done at 900 rpm instead of the 600 rpm of the RON<ref>http://www.texacoursa.com/glossary/r.html</ref><ref>http://www.texacoursa.com/glossary/m.html</ref>.
AVGAS is broadly similar to automotive gasoline but subject to much more rigorous quality control. The most common form of AVGAS has an octane rating of 100 - octane rating being a measure of the resistance of a fuel to pre-ignition (the chance of combustion occurring before the spark). This flashpoint is the same as that of automotive gasoline and there is a significant danger of combustion if it is not handled carefully.