Lariciresinol is a lignan, a type of phenylpropanoids. In food, it is found in sesame seeds and in Brassica vegetables. It is also found in the bark and wood of white fir (Abies alba). Lariciresinol is a lignan, a type of phenylpropanoids. In food, it is found in sesame seeds and in Brassica vegetables. It is also found in the bark and wood of white fir (Abies alba).