Abstract

In the present research, the essential oil of Sarcorhachis sydowii Trel was analyzed. The chemical composition was performed by GC/MS and GC/FID techniques. A total of 42 chemical compounds were identified which represent 98.53 % of the essential oil composition. The main compounds were (E)-caryophyllene (25.07 %). α-humulene (10.48 %), α-selinene (7.58 %), β-selinene (6.08 %) and α-phellandrene (5.37 %). In addition, a low amount of safrole (0.74 %) was identified. The antimicrobial activity and antifungal activity of the oil were assayed against two Gram-positive bacteria, five Gram-negative bacteria and two fungi. The essential oil from S. sydowii Trel exerted strong activity against Trichophyton rubrum (ATCC 28188) and Trichophyton mentagrophytes (ATCC 28185) with a MIC of 500 μg/mL. However, the EO did not show activity against any bacteria at the maximum concentration tested (1000 μg/mL). The antioxidant activity of the essential oil was explored using DPPH and ABTS methods, and the oils showed an IC₅₀ of 950 μg/mL and 800 μg/mL, respectively. This is the first report on the chemical composition and biological activity of essential oil from this species.

摘要

在本研究中，分析了Sarcorhachis sydowii Trel的精油。化学成分通过GC / MS和GC / FID技术进行。总共鉴定出42种化合物，占精油成分的98.53％。主要化合物为（E）-石竹烯（25.07％）。α-humulene（10.48％），α-selinene（7.58％），β-selinene（6.08％）和α-phellandrene（5.37％）。另外，鉴定出少量的黄樟脑（0.74％）。测定了该油对两种革兰氏阳性细菌，五种革兰氏阴性细菌和两种真菌的抗菌活性和抗真菌活性。从精油中S. sydowii TREL施加很强的活性针对红色毛癣菌（ATCC 28188）和毛癣菌（ATCC 28185）的MIC为500μg/ mL。但是，在最大测试浓度（1000μg/ mL）下，EO没有表现出对任何细菌的活性。使用DPPH和ABTS方法探索了香精油的抗氧化活性，这些油的IC _50分别为950μg/ mL和800μg/ mL。这是有关该物种精油化学成分和生物活性的第一份报告。