Natural Food Colours
Soybean is a rich source of which flavonoid class?
Soybean is a rich source of which flavonoid class?
Try to answer before revealing the correct option and explanation.
Correct Answer
✅ B. Genistein, Daidzein, Glycitein
Explanation
Soybean is the richest dietary source of isoflavones, a subclass of flavonoids. The major soybean isoflavones are:
- Genistein
- Daidzein
- Glycitein
These compounds are called phytoestrogens because their chemical structure resembles estrogen and they can weakly interact with estrogen receptors.
Soybean isoflavones are important bioactive compounds studied for their antioxidant activity and potential role in cardiovascular and bone health.
Why Other Options Are Incorrect:
- Anthocyanins (Cyanidin, Pelargonidin): Found mainly in colored fruits such as berries and grapes.
- Flavanols (Catechin, Epicatechin, EGCG): Abundant in green tea and cocoa.
- Flavones (Apigenin, Luteolin): Common in parsley, celery, and herbs.
Key Concept
Soybean → Isoflavones Genistein → Major soybean isoflavone Daidzein → Important phytoestrogen Glycitein → Minor soybean isoflavone Isoflavones are mainly present in soy protein products
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., Finley, J. W., Hurst, W. J., & Lee, C. Y. (2018). Principles of Food Chemistry (4th Edition). Springer.
- Shahidi, F., & Naczk, M. (2004). Phenolics in Food and Nutraceuticals. CRC Press.
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