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.
The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.
First, the octane rating for the avgas that you mentioned is much higher than used in general aviation for the most part, so my first question is who or what told you that? I really question the validity of the octane rating. General avgas has a 100LL rating....not enough for 12 to 1 race motors I might add.