Volatile flower oils of three genotypes of rose-scented geranium (Pelargonium sp.)

• Published in: Flavour and fragrance journal 2000-03, Vol.15 (2), p.105-107
• Main Authors: Rajeswara Rao, B. R., Sastry, K. P., Saleem, S. M., Prakasa Rao, E. V. S., Syamasundar, K. V., Ramesh, S.
• Format: Article
• Language: English
• Subjects: 10-epi-^g-^AEudesmol; 6,9-Guaiadiene; a-Humulene; a-Muurolene; a-Pinene; Applied sciences; b-Bourbonene; b-Caryophyllene; b-citronellol; b-Phenylethyl butyrate; Chemical industry and chemicals; chemotypes; citronellol; citronellyl acetate; citronellyl butyrate; citronellyl formate; citronellyl tiglate; Essential oils, perfumes; Exact sciences and technology; flower oil; genotypes; geranic acid; geraniol; geranyl acetate; geranyl isovalerate; geranyl tiglate; isomenthone; linalol; Pelargonium; Pelargonium species; rose oxides; rose-scented geranium; terpinen-4-ol; Washing products. Cosmetics and toiletries. Perfumes
• ISSN: 0882-5734; 1099-1026
• DOI: 10.1002/(SICI)1099-1026(200003/04)15:2<105::AID-FFJ875>3.0.CO;2-G

The volatile flower oils of three genotypes of rose‐scented geranium (Pelargonium sp.) commercially cultivated at a high altitude (2200 m above MSL) location (Kodaikanal) in India were investigated by GC and GC–MS. Freshly collected flowers of genotypes 1, 2 and 3 on distillation produced oil yields of 0.32%, 0.34% and 0.50%, respectively. The flower oil of genotype 1 was richer in α‐pinene (1.7%), (Z) and (E)‐rose oxides (1.3% and 0.6%), isomenthone (6.8%), citronellol (43.8%), citronellyl formate (20.4%), citronellyl acetate (1.0%), β‐caryophyllene (2.6%), citronellyl butyrate (2.1%) and citronellyl tiglate (1.9%). The flower oil of genotype 2 was richer in terpinen‐4‐ol (1.3%), geranyl formate (3.6%), β‐bourbonene (1.2%), α‐muurolene (1.3%), geranyl isovalerate (0.9%), 10‐epi‐γ‐eudesmol (4.6%) and geranyl tiglate (2.9%). The flower oil of genotype 3 was richer in linalol (7.6%), geraniol (38.6%), geranyl acetate+geranic acid (5.2%), β‐phenylethyl butyrate (4.6%), 6,9‐guaiadiene (2.3%) and α‐humulene (1.5%). Copyright © 2000 John Wiley & Sons, Ltd.