Cinnamic Aldehyde or Cinnamaldehyde occurs naturally in the bark of cinnamon trees and other species of the genus Cinnamomum like camphor and Cassia. These trees are the natural source of Cinnamon, and the essential oil of Cinnamon bark contains as much as 90% Cinnamic Aldehyde.
The most obvious application for cinnamaldehyde is as a flavouring agent. Cinnamon bark oil in varied concentrations is used for flavoring food items like chewing gum, ice cream, candy, and beverages range from 9 to 4900 ppm (that is, less than 0.5%).
Cinnamic Aldehyde is used in some perfumes of natural, sweet, or fruity scents. Almond, apricot, butterscotch, and other aromas may partially employ the compound for their pleasant smells.
Cinnamic Aldehyde is also used as a fungicide. Proven effective on over 40 different crops, cinnamaldehyde is typically applied to the root systems of plants. It’s low toxicity and well-known properties make it ideal for agriculture. To a lesser extent, cinnamaldehyde is an effective insecticide, and its scent is also known to repel animals like cats and dogs.