EXTRACTION OF ESSENTIAL OIL FROM POTENTIAL RESOURCES (CYMBOPOGON CITRATUS) PLANT WITH INSECT REPELLENT PROEPRTIES

MASMORYNE MESHA ANAK RUBI, - (2022) EXTRACTION OF ESSENTIAL OIL FROM POTENTIAL RESOURCES (CYMBOPOGON CITRATUS) PLANT WITH INSECT REPELLENT PROEPRTIES. [Final Year Project Report] (Unpublished)

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Abstract

Cymbopogon citratus or also known as lemongrass, is a fast-growing species can be found abundantly in all houses such as in Sarawak. The unique characteristics of its chemical compound enhance the possibility of producing safer insect repellent to overcome the side effects of synthetic insect repellent. In this study, a comparison of various solvents used in extraction as well as the extraction parameters (extraction time and extraction temperature) has been studied to determine the suitable condition for extracting the essential oil from Cymbopogon Citratus. Apart from that, the suitability of models (Pseudo First Order Model and Pseudo Second Order Model) to describe the kinetic analysis of extraction together with process optimization using Response Surface Methodology (RSM) also been conducted. By the end of this study, extraction using Soxhlet extraction found that water was chosen as the most suitable solvent in extracting essential oil from Cymbopogon Citratus and based on the FTIR characterization of the extracted essential oil, all three solvents (water, ethanol and n-hexane) able to extract the main active compound with repellent properties(geranial and neral under aldehyde group and citronellos and geraniol under aliphatic alcohol group). Pseudo First Order Model and Pseudo Second Order Model as well as the RSM model able to predicts the extraction kinetic together with process optimization with the value of T=51.27°C and t=8h which resulting a 74% of extracted essential oil.

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