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.
Use only what the ownerâs manual specifies. If your car is designed to run on regular gasoline, or 87 octane. If your manual specifies higher octane fuel, such as 89, 91, or 93 use the closest octane rating available at your gas station without going below the specified rating in your manual.