Question:
Palmorosa oil is obtained from steam distillation of _________.
Palmorosa oil is obtained from steam distillation of _________.
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To remember this chemotype distinction, associate 'Motia' with the premium 'moti' (pearl) of the species that yields the highly valuable rose-scented Palmarosa oil.
Updated On: Jul 21, 2026
- Cymbopogon martini var. sofia
- Cymbopogon nardus var. confertiflorus
- Cymbopogon martini var. motia
- Cymbopogon nardus var. linnasi
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Aromatic forest grasses yield essential oils of commercial value. *Cymbopogon* is a key genus of essential-oil-bearing grasses.
Step 2: Detailed Explanation:
Cymbopogon martini (commonly known as Rosha grass or Palmarosa grass) is a perennial aromatic grass native to India. It exists in two distinct varieties (chemotypes) that differ in oil composition:
1. var. {motia: This variety yields high-quality Palmarosa oil. It is exceptionally rich in the terpene alcohol geraniol ($75\%\text{ to }90\%$), giving it a sweet, rose-like fragrance. It is highly valued in the perfumery, cosmetic, and pharmaceutical industries.
2. var. {sofia: This variety yields Gingergrass oil, which has a lower geraniol content and a distinct ginger-like aroma, making it less commercially valuable than Palmarosa oil.
Step 3: Final Answer:
Therefore, Palmarosa oil is obtained from Cymbopogon martini var. motia, corresponding to option (C).
Aromatic forest grasses yield essential oils of commercial value. *Cymbopogon* is a key genus of essential-oil-bearing grasses.
Step 2: Detailed Explanation:
Cymbopogon martini (commonly known as Rosha grass or Palmarosa grass) is a perennial aromatic grass native to India. It exists in two distinct varieties (chemotypes) that differ in oil composition:
1. var. {motia: This variety yields high-quality Palmarosa oil. It is exceptionally rich in the terpene alcohol geraniol ($75\%\text{ to }90\%$), giving it a sweet, rose-like fragrance. It is highly valued in the perfumery, cosmetic, and pharmaceutical industries.
2. var. {sofia: This variety yields Gingergrass oil, which has a lower geraniol content and a distinct ginger-like aroma, making it less commercially valuable than Palmarosa oil.
Step 3: Final Answer:
Therefore, Palmarosa oil is obtained from Cymbopogon martini var. motia, corresponding to option (C).
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