Sci-Poster Sample

Document Sample
Sci-Poster Sample Powered By Docstoc
					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.

				
DOCUMENT INFO
Shared By:
Categories:
Stats:
views:43
posted:4/23/2012
language:Latin
pages:1
Description: A Sci-Poster sample for science-related documents.