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.
Best Octane Booster. Octane boosters are one of many products that are designed to improve the performance of your vehicle. With a product like this, quality is everything. We looked at 15 of the most popular octane boosters on the market for cost, value, reputation of brand, performance expectation, and customer reviews.