The variations in essential oil yield and composition of Cymbopogon flexuosus var. GRL-1 were compared with respect to four different harvesting regimes in monsoon-influenced humid subtropical climate of north India. The essential oil yield was found to vary from 0.65 to 0.75% during different harvesting mode. GC and GC–MS analysis revealed 28 constituents comprising 93.0–99.7% of total compositions. Geraniol (58.9–75.5%) and geranyl acetate (9.5–26.6%) were identified as the major constituents. Other constituents detected with significant content were 1,8-cineole (0.3–4.8%), (E)-β-ocimene (≤ 0.03–2.3%), linalool (1.2–1.9%), and citronellal (0.2–1.6%). Significant variations were noticed in the herb and oil yield, and contents of geraniol and geranyl acetate due to different harvesting regimes. The results obtained could be of economic importance for obtaining higher yield of geraniol-rich essential oil from C. flexuosus var. GRL-1 for varied industrial applications.

弯腰柏的精油产量和组成的变化。在印度北部季风影响的潮湿亚热带气候中，针对四种不同的采伐方式对GRL-1进行了比较。发现在不同的收获方式下，精油的产率在0.65至0.75％之间变化。GC和GC-MS分析显示28种成分占总成分的93.0-99.7％。主要成分为香叶醇（58.9–75.5％）和乙酸香叶酯（9.5–26.6％）。与显著内容检测到的其它成分为1,8-桉树脑（0.3-4.8％），（È）-β-ocimene（≤0.03–2.3％），芳樟醇（1.2–1.9％）和香茅醛（0.2–1.6％）。由于采收方式的不同，在草药和油料产量以及香叶醇和乙酸香叶酯的含量上均存在显着变化。所获得的结果对于从屈挠梭菌中获得更高产率的富含香叶醇的香精油具有经济意义。GRL-1适用于各种工业应用。