nutritional_roles

Name: nutritional_roles
Description: What element or macronutrient this ingredient supplies to the medium (e.g., CARBON_SOURCE, SULFUR_SOURCE, VITAMIN_SOURCE). Facet 1 of 3 orthogonal ingredient-role facets — a single ingredient may carry multiple values (e.g., L-cysteine → AMINO_ACID_SOURCE + SULFUR_SOURCE).
From schema: https://w3id.org/mediaingredientmech
Range: NutritionalRoleAssignment
Multivalued: True
Inlined as list: True