nutri-, nutrit-

(Latin: to nourish, to feed, to nurse, to foster, to support, to preserve)

nutriture (s) (noun)
An obsolete or outdated term that indicates the status of the body in relation to nutrition, generally or as regards a specific nutrient; such as, protein: "The nurtriture of of the body indicates how nourishment has influenced a person's health condition."
phytonutrient (s), phytonutrients (pl); phytochemical (s), phytochemicals (pl) (nouns)
Currently, the terms phytonutrient and phytochemical are being used interchangeably to describe those plant compounds which are thought to have health-protecting qualities: "Phytonutrients or phytochemicals, are non-nutritive bioactive plant substances; such as, flavonoids or carotenoids, considered to have a beneficial effect on human health."

"The antioxidant, immune boosting and other health promoting properties of active compounds in plants are being investigated."