Abstract

Essential oil of five varieties of ajwain was extracted and their constituents were analyzed by GC-MS. All the varieties showed a significant difference in essential oil content which ranged from 4.17 % in variety Ajmer Ajwain-1 to 5.17 % in Local cultivar. In all the varieties five major compounds including thymol, cymene, γ-terpinene, α-pinene, and β-pinene were detected. Thymol was the most abundant compound in all the varieties, the content of which varied from 53.79 % in variety Ajmer Ajwain-93 to 67.79 % in variety Ajmer Ajwain-1. The γ-terpinene content was the second most important constituent recorded 25.39 % in variety Ajmer Ajwain-93. Cymene was the other important content that showed large variation from 14.77 % in variety Ajmer Ajwain-1 to 21.61 % in Local cultivar. α-Pinene and β-pinene were other constituents that showed significant variation in varieties. Studied varieties showed significant genetic variation in essential oil constituents. However, no significant effect on essential oil constituents was observed due to varying levels of nitrogen.

摘要

提取了五种苦瓜的精油，并通过GC-MS对其成分进行了分析。所有品种的精油含量差异显着，从Ajmer Ajwain-1品种的4.17％到本地品种的5.17％。在所有变种中，检测到了五种主要化合物，包括百里香酚，开曼烯，γ-萜品烯，α--烯和β-pine烯。百里酚是所有品种中含量最丰富的化合物，其含量从Ajmer Ajwain-93品种的53.79％到Ajmer Ajwain-1品种的67.79％不等。在Ajmer Ajwain-93品种中，γ-松油烯含量是第二重要的成分，占25.39％。Cymene是另一个重要的含量，从Ajmer Ajwain-1品种的14.77％到本地品种的21.61％都有很大的差异。α-P烯和β-pine烯是在品种上表现出显着差异的其他成分。研究的品种在精油成分中显示出显着的遗传变异。但是，由于氮含量的变化，未观察到对精油成分的显着影响。