Abstract Syzygium cumini (L.) Skeels (Jambolan) is a widespread summer fruit plant, well-known for various therapeutic uses such as anti-diabetic, antimicrobial, antioxidant properties. The fruit helps to convert starch into energy which helps in regulating blood sugar levels and possesses a low glycemic index. The present study is aimed to estimate the chemical composition of the essential oil of leaves of Syzygium cumini through GC/MS. The essential oil was extracted by hydrodistillation using a Clevenger apparatus which was further analyzed through GC/MS. The GC/MS analysis identified twenty-five components with a total area percentage of 95.66 %. The major identified components were τ-cadinol (21.44 %) and tau-muurolol (12.01 %). The compounds of intermediate concentration were globulol (7.98 %), caryophyllene (6.69 %), δ-cadinene (6.56%) and α-pinene (6.32 %). While β-eudesmol (4.42 %), β-pinene (4.32 %), γ-cadinene (3.87 %), camphene (2.98 %), α-terpinenol (2.72 %), camphor (2.23 %), humulene 6,7-epoxide (2.17 %), cubeban-11-ol (1.98 %), α-muurolene (1.81 %), epicubenol (1.43 %), α-copaene (1.26 %), viridiflorene (1.02 %), β-guanine (0.65 %), β-bourbonene (0.23 %), terpinen-4-ol (0.13 %), endo-borneol (0.12 %), levoverbenone (0.12 %) and isobornyl acetate (0.12 %) were the compounds present in minor concentrations. Among the identified compounds there were monoterpene hydrocarbons (13.62 %), bicyclic-monoterpenoid (0.36 %), terpenoid ketones (2.23 %), monocyclic monoterpenoid alkene alcohol (2.85 %), non-oxygenated sesquiterpenes (25.17 %) and oxygenated sesquiterpenes (51.43 %). The present investigation also discusses the applications of various components found in S. cumini leaf essential oil and a comparative view on the essential oil composition of the leaves of the plant was reported earlier.

中文翻译：

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印度东北地区 Syzygium cumini (L.) Skeels Leaf 精油的化学成分及其用途

摘要 Syzygium cumini (L.) Skeels (Jambolan) 是一种广泛分布的夏季水果植物，以抗糖尿病、抗菌、抗氧化等多种治疗用途而闻名。这种水果有助于将淀粉转化为能量，这有助于调节血糖水平并具有低血糖指数。本研究旨在通过 GC/MS 估计丁香叶精油的化学成分。使用 Clevenger 装置通过水蒸馏提取精油，并通过 GC/MS 进一步分析。GC/MS 分析鉴定了 25 种组分，总面积百分比为 95.66%。确定的主要成分是 τ-cadinol (21.44 %) 和 tau-muurolol (12.01 %)。中等浓度的化合物为球蛋白 (7.98 %)、石竹烯 (6.69 %)、δ-卡二烯 (6. 56%) 和 α-蒎烯 (6.32%)。而 β-eudesmol (4.42 %)、β-蒎烯 (4.32 %)、γ-蒎烯 (3.87 %)、莰烯 (2.98 %)、α-萜品烯醇 (2.72 %)、樟脑 (2.23 %)、葎烯 6,7-环氧化物 (2.17 %)、cubeban-11-ol (1.98 %)、α-muurolene (1.81 %)、epicubenol (1.43 %)、α-copaene (1.26%)、viridiflorene (1.02%)、β-鸟嘌呤 (0.65% )、β-波旁烯 (0.23 %)、萜品烯-4-醇 (0.13 %)、内龙脑 (0.12 %)、左旋苯甲酮 (0.12 %) 和乙酸异冰片酯 (0.12 %) 是浓度较低的化合物。在鉴定的化合物中，有单萜烃 (13.62%)、双环单萜 (0.36%)、萜酮 (2.23%)、单环单萜烯醇 (2.85%)、非氧化倍半萜 (25.17%) 和含氧倍半萜 (25.17%)。 %）。本研究还讨论了在 S. 中发现的各种成分的应用。