Natural Food Colours
Flavonoids belong to which class of phytochemicals?
Flavonoids belong to which class of phytochemicals?
Try to answer before revealing the correct option and explanation.
Correct Answer
✅ C. Polyphenols
Explanation
Flavonoids are polyphenolic plant compounds containing multiple phenolic hydroxyl (-OH) groups. They are secondary metabolites synthesized by plants and are known for their antioxidant properties. Flavonoids contribute to the color, flavor, and health-promoting properties of many foods such as fruits, vegetables, tea, cocoa, and legumes.
Why Other Options Are Incorrect:
- Terpenoids: Derived from isoprene units and include carotenoids and essential oils.
- Alkaloids: Nitrogen-containing compounds such as caffeine and nicotine.
- Steroids: Have a four-ring structure, unlike flavonoids.
Key Concept
Flavonoids = Polyphenols Plant secondary metabolites Strong antioxidant activity Contain phenolic hydroxyl groups
Related Sub-categories
References
- Damodaran, S., Parkin, K.L. (2017). Fennema's Food Chemistry, 5th Edition. CRC Press.
- Belitz, H.D., Grosch, W., Schieberle, P. (2009). Food Chemistry, 4th Edition. Springer.
- deMan, J.M. et al. (2018). Principles of Food Chemistry, 4th Edition. Springer.
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