Abstract
Cardamom plant (Amomum cardamomum) is an essential oil-producing plant in Indonesia that is rich in benefits. Due to its high antioxidant content, it has the potential to be a standardized herbal medicine. The purpose of this study was to compare two qualitative methods for determining the compound content of cardamom. Hydrodistillation and ultrasonication as a pretreatment (Ultrasonic Assisted Extraction Hydrodistillation/UAE-HD) were used to extract cardamom oil. Analyzed GC–MS (gas chromatography-mass spectrometry) was performed to obtain the essential oil content. Confirmation of chemical compounds is carried out using the Kovats equation. The retention index (RI) method introduced by Kovats expects the targeted compound to be identified correctly. The Retention Index (RI) calculation using different analytical methods and the test mixture of hydrocarbon compounds show that the difference with the RI library - RI NIST: 1.5 - 1.86% is not more than 20% to the provisions. Between the two methods used in this study, Method 2 allows faster analysis, as demonstrated by the shorter retention time (RT=8.18) than Method 1 (RT =11.67).
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