What ketone are in artificial butter flavor popcorn?

The main ketone responsible for the artificial butter flavor in popcorn is dihydro-β-ionone.

Here's why:

* Dihydro-β-ionone has a very strong buttery aroma and flavor, and it's often used in food flavorings.

* It's a synthetic compound, meaning it's not naturally found in butter, but it mimics the key aroma compounds found in butter.

Important Note: While dihydro-β-ionone is a key component, other flavoring compounds, including other ketones, may be used in artificial butter flavoring. However, dihydro-β-ionone is typically the most significant contributor to the buttery aroma and flavor.