noun which may take the genitive case particle 'no', noun
gluten-free
Describes food, products, or diets that do not contain gluten. Used as a no-adjective or noun.
このパンはグルテンフリーです。
This bread is gluten-free.
最近、グルテンフリーのレストランが増えている。
Recently, gluten-free restaurants have been increasing.