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Phytochemical
Biologically active, non-nutritive substance found in plants.
Plant-derived compounds (polyphenols, carotenoids, glucosinolates, isoflavones) that exhibit biological activity and potential health benefits beyond classical nutrient roles.
How one textbook covers it
Advanced Nutrition and Human Metabolism, 8th ed. (Gropper) — Glossary
Plant-derived compounds (polyphenols, carotenoids, glucosinolates, isoflavones) that exhibit biological activity and potential health benefits beyond classical nutrient roles.