Celery activities. Celery contains phenolic acid, which is an antioxidant. Apiin and apigenin can be extracted from celery and parsley. Lunularin is a dihydrostilbenoid found in common celery. The main chemicals responsible for the aroma and taste of celery are butylphthalide and sedanolide. Daniel Zohary and Maria Hopf note that celery leaves and inflorescences were part of the garlands found in the tomb of pharaoh Tutankhamun (died 1323 BC), and celery mericarps dated to the seventh century BC were recovered in the Heraion of Samos. However, they note "since "A. graveolens" grows wild in these areas, it is hard to decide
Celery to the season of the year, and, after one or two thinnings and transplantings, they are, on attaining a height of , planted out in deep trenches for convenience of blanching, which is effected by earthing up to exclude light from the stems. In the past, celery was grown as a vegetable for winter and early spring; it was perceived as a cleansing tonic, welcomed to counter the deficiencies of a winter diet based on salted meats without fresh vegetables. By the 19th century, the season for celery had been extended, to last from the beginning of September to late