Disagreement about carotenoid research raises again the question of what `natural` means
(WorldNews Switzerland)

A disagreement between researchers and an ingredient supplier about the import of recent carotenoid research raised again the sticky question of when processing steps might convert a natural ingredient into an artificial one. A war of words erupted between researchers John Nolan PhD and Stephen Beatty, PhD and Kemin Industries , supplier of a line of ingredients that contain lutein and zeaxanthin. ......