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.
Note that the different types of gas â economy or regular 87 octane, or 89 to 93 octane rating â do not include diesel fuel or bio-diesel fuel. Using those types of fuels in a car designed to run on gasoline will wreck the engine.ote that the different types of gas â economy or regular 87 octane, or 89 to 93 octane rating â do not include diesel fuel or bio-diesel fuel. Using those types of fuels in a car designed to run on gasoline will wreck the engine.