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首页> 外文期刊>Journal of Essential Oil-Bearing Plants >Influence of Harvesting Stage and Distillation Time of Damask Rose (Rosa damascena Mill.) Flowers on Essential Oil Content and Composition in the Western Himalayas
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Influence of Harvesting Stage and Distillation Time of Damask Rose (Rosa damascena Mill.) Flowers on Essential Oil Content and Composition in the Western Himalayas

机译：锦缎（Rosa Damascena Mill的蒸馏时间收获阶段和蒸馏时间。Himalayas西部精油含量和组成的花朵

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Experiments were conducted to study the influence of harvesting stage and distillation time of damask rose. In the first experiment, damask rose flowers were harvested in six different stages beginning from stage 1 (HS1) where sepals were intact with dark immature petals to stage 6 (HS6) when flower opened previous day. Results revealed that stage HS4 (petal whorl opened) remained at par with HS3 (petal whorl loosened) and HS5 (fully opened flower). Furthermore, the essential oil produced in the HS4 stage recorded higher cis-rose oxide, citronellol+nerol, geraniol and lower nonadecane content than other stages. In second experiment of flower distillation time, damask rose flowers were distilled for 3 h, 4 h, 5 h, 6 h and 7 h and replicated three times. The essential oil content (0.067 %) and the concentration of citronellol+nerol (31.69 +/- 1.00 %) and geraniol (19.39 +/- 1.81 %) reached a maximum by extending distillation time up to 5 h. Linalool, phenyl ethyl alcohol, citronellol+nerol and trans-geraniol concentration increased up to 5 h of distillation and decreased thereafter. This study demonstrated that distillation time can significantly modify the essential oil yield and composition of damask rose. Moreover, distillation time could be used to obtain rose oil with targeted chemical profiles.
机译：进行了实验，研究了锦缎玫瑰收获阶段和蒸馏时间的影响。在第一个实验中，从第1阶段（HS1）开始的六个不同阶段收获锦缎玫瑰花朵，其中萼片在前一天的花朵打开时与暗淡的未成熟花瓣完整为6（HS6）。结果表明，阶段HS4（瓣螺纹开放）与HS3（花瓣螺纹松动）和HS5（完全打开的花）保持均为稳定。此外，HS4阶段中产生的精油记录了更高的CIS玫瑰氧化物，香橼醇+ Nerol，小醇和低于其他阶段的较低的非甲烷含量。在花蒸馏时间的第二种实验中，蒸馏3小时，4小时，5小时，6小时和7小时蒸馏锦缎玫瑰花并复制三次。精油含量（0.067％）和Citronellol + Nerol浓度（31.69 +/- 1.00％）和大丙醇（19.39 +/- 1.81％）通过延伸蒸馏时间达到5小时，达到最大值。 Linalool，苯基乙醇，Citronellol + Nerol和Trans-Geraniol浓度高达5小时，然后下降。本研究表明，蒸馏时间可以显着改变锦缎玫瑰的精油产量和组成。此外，蒸馏时间可用于获得具有靶向化学型材的玫瑰油。

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