THE EFFECT OF MOISTURE CONTENT ON THE ESSENTIAL OIL YIELD OF Cymbopogon citratus (DC) Staph AND Cymbopogon winterianus Jewitt Joseph Mendoza Kristine Lee Lawrence Namuco Abstract Comparison of Moisture Content of Lemongrass In this study, the effect of moisture and Citronella content on the essential oil yield of lemongrass As the days goes by the leaves (Cymbopogon citratus) and citronella of the Lemongrass and Citronella dry and lose (Cymbopogon winterianus) was determined. Fresh their moisture content, the leaves of the leaves of lemongrass and citronella from BPI were Lemongrass and Citronella lose their moisture experimented on. The leaves were dried for one content the same rate as they dry over the month and representative samples were taken at experimental period. certain time intervals. The results of the experiment showed that oil yield percentage of both plants increase when the moisture content decreases. It is then concluded in this study that a lower moisture 4 content for lemongrass and citronella has a positive 2 % Oil Yield effect on oil yield percentage. Lemongrass 0 0 1 3 Citronella 7 14 21 Introduction 28 Days The goal of this study is to determine if the moisture content of the lemongrass and Figure 2. Oil Yield % of Lemongrass and citronella leaves have a positive effect on Citronella percentage oil yield. The study will be useful in the Comparison of Oil Yield % of Lemongrass and utilization of the essential oils from indigenous plants Citronella useful for pharmaceutical and cosmetic products development. The essential oil that the two leaves yield peaks at the 7th day with 1.40% for the Lemongrass and 3.43% for the Citronella but Materials and Methods we can see that the Citronella gives off more Fresh leaves were obtained from BPI. essential oils than the Lemongrass. The plants were air-dried for one month taking representative samples after 1 day, 3 days, 1 week, 2 weeks, 3 weeks, and 4 weeks. To get the moisture content of both plant species, toluene distillation Summary method was used. Three trials were made per sample This study determined the effect but the average of the results was considered. To of moisture content on the essential oil yield of the extract the essential oils, water distillation was used. Lemongrass and Citronella. The leaves of the Lemongrass and Citronella lose their moisture content dry over the days. As the leaves of the 2 Results and Discussion plants dry up, the essential oils they release increases and peak on the 7th day an afterwards it diminishes. Conclusion % Moisture Content 100 The results of the study showed 50 Lemongrass that the moisture content of leaves affects the MC percentage oil yield of Lemongrass and 0 CitronellaMC Citronella. Results showed that as the moisture 0 1 3 7 14 21 28 content of the leaves decreases, the percentage Days yield of essential oil increases and vice versa. Figure 1. Comparison of Moisture Content of Recommendation Lemongrass and Citronella It is recommended that a longer observation period for the leaves be imposed for a better analysis on the effect of moisture content on oil yield percentage.