Refers to nutritional components in food or substances that nourish the body.
このスープは滋養分が豊富だ。
This soup is rich in nutrients.
If you overcook vegetables, the nutrients are lost.
Compound of 滋養 (nourishment) and 分 (component, part). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning 'nutrient'.