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>.
While it's true that pure ethanol has a higher octane number, (reason ethanol is ingredient used most often in octane enhancing gas additive products), E10 gas does not have an octane higher than conventional gasoline.(Choose grade of fuel at pump for octane you prefer). When E10 gas phase-separates (high octane ethanol drops to the bottom of the tank with water), the upper tank layer octane typically drops 2.5 points. 2  E.G. 87 octane gas purchased now becomes sub-octane 84.5 gasoline.