Question:
Which of the following new curcuminoid has been isolated from nematocidally active fraction of turmeric?
Which of the following new curcuminoid has been isolated from nematocidally active fraction of turmeric?
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While Curcumin, Demethoxycurcumin, and Bisdemethoxycurcumin are the three major linear curcuminoids of turmeric, Cyclocurcumin is a unique cyclic curcuminoid known for its potent nematocidal properties.
Updated On: Aug 13, 2026
- Demethoxy curcumin
- Diferuloymethane
- Bisdemethoxycurcumin
- Cyclocurcumin
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Turmeric (Curcuma longa) contains several active curcuminoid compounds in its rhizomes.
These compounds are studied for their pharmacological, antimicrobial, insecticidal, and nematocidal properties.
Step 2: Detailed Explanation:
The primary curcuminoids found in turmeric rhizomes are curcumin (diferuloylmethane), demethoxycurcumin, and bisdemethoxycurcumin.
During scientific evaluations of the bioactive fractions of turmeric, a relatively newer, minor cyclic curcuminoid was isolated from the fraction exhibiting strong nematocidal activity.
This compound was identified as Cyclocurcumin.
It was isolated along with the other major curcuminoids from the nematocidally active fraction of turmeric rhizomes and has been shown to exhibit significant inhibitory effects on plant-parasitic nematodes, such as Meloidogyne incognita (root-knot nematode).
Therefore, Cyclocurcumin is recognized as the new curcuminoid isolated from this nematocidally active fraction.
Step 3: Final Answer:
Cyclocurcumin is the curcuminoid isolated from the nematocidally active fraction, which corresponds to option (D).
Turmeric (Curcuma longa) contains several active curcuminoid compounds in its rhizomes.
These compounds are studied for their pharmacological, antimicrobial, insecticidal, and nematocidal properties.
Step 2: Detailed Explanation:
The primary curcuminoids found in turmeric rhizomes are curcumin (diferuloylmethane), demethoxycurcumin, and bisdemethoxycurcumin.
During scientific evaluations of the bioactive fractions of turmeric, a relatively newer, minor cyclic curcuminoid was isolated from the fraction exhibiting strong nematocidal activity.
This compound was identified as Cyclocurcumin.
It was isolated along with the other major curcuminoids from the nematocidally active fraction of turmeric rhizomes and has been shown to exhibit significant inhibitory effects on plant-parasitic nematodes, such as Meloidogyne incognita (root-knot nematode).
Therefore, Cyclocurcumin is recognized as the new curcuminoid isolated from this nematocidally active fraction.
Step 3: Final Answer:
Cyclocurcumin is the curcuminoid isolated from the nematocidally active fraction, which corresponds to option (D).
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