Quality Assessment of Various Drying Methods on Rosmarinus officinalis Essential Oil (EO) Hydrodistillation Using the Electric Conductivity Test
School Name
Spring Valley High School
Grade Level
11th Grade
Presentation Topic
Chemistry
Presentation Type
Non-Mentored
Abstract
Essential Oils (EOs) are derived plant extracts that are significant commodities to agriculture-based industries in order to serve for various applications in health, cosmetics, and food enterprises. Steam distillation is the most widely-used method by companies, but many disadvantages are involved with the technique including high temperatures that can modify the chemical compositions of EOs, and highly volatile components may be susceptible to being eliminated. Because hydrodistillation is the most common method to do so, it would be beneficial to examine how different drying techniques enhance or not enhance the essential oil composition and yield because the results may vary based on the species of the plant. Drying methods are important in this experiment because the shelf-life of EOs can be increased by drying, which is the application of heat to decrease the water content. The hypothesis was that the microwave drying would yield the largest amount of essential oils in milliliters. The percent of the oil yield was determined by the volume of the EO divided by the weight of the dry matter multiplied by 100. Boxplots of the means were created and compared to one another. A two-way ANOVA was used in order to determine if there is a significant difference between the means of the oil yields.
Recommended Citation
Siddique, Aisha, "Quality Assessment of Various Drying Methods on Rosmarinus officinalis Essential Oil (EO) Hydrodistillation Using the Electric Conductivity Test" (2020). South Carolina Junior Academy of Science. 66.
https://scholarexchange.furman.edu/scjas/2020/all/66
Location
Furman Hall 108
Start Date
3-28-2020 10:15 AM
Presentation Format
Oral and Written
Group Project
No
Quality Assessment of Various Drying Methods on Rosmarinus officinalis Essential Oil (EO) Hydrodistillation Using the Electric Conductivity Test
Furman Hall 108
Essential Oils (EOs) are derived plant extracts that are significant commodities to agriculture-based industries in order to serve for various applications in health, cosmetics, and food enterprises. Steam distillation is the most widely-used method by companies, but many disadvantages are involved with the technique including high temperatures that can modify the chemical compositions of EOs, and highly volatile components may be susceptible to being eliminated. Because hydrodistillation is the most common method to do so, it would be beneficial to examine how different drying techniques enhance or not enhance the essential oil composition and yield because the results may vary based on the species of the plant. Drying methods are important in this experiment because the shelf-life of EOs can be increased by drying, which is the application of heat to decrease the water content. The hypothesis was that the microwave drying would yield the largest amount of essential oils in milliliters. The percent of the oil yield was determined by the volume of the EO divided by the weight of the dry matter multiplied by 100. Boxplots of the means were created and compared to one another. A two-way ANOVA was used in order to determine if there is a significant difference between the means of the oil yields.
