Crude Extract from Robusta Coffee (Coffea canephora) Husks Using Ethanol: Steam versus Ultrasonic
Document Types
Paper Presentation
School Name
Adamson University
Track or Strand
Science, Technology, Engineering, and Mathematics (STEM)
Research Advisor (Last Name, First Name, Middle Initial)
Gurtiza, John Albert D.
Start Date
25-6-2025 1:00 PM
End Date
25-6-2025 2:30 PM
Zoom Link/ Room Assignment
https://zoom.us/j/97401420760?pwd=zSWApqlDXbgd2OJcNw1hbFYXrUQS5T.1 Meeting ID: 974 0142 0760 Passcode: 310300
Abstract/Executive Summary
The global demand for renewable energy sources necessitates exploring sustainable alternatives to fossil fuels. Coffee husks, a significant agricultural waste product, represent a potential feedstock for biofuel production. This study investigated the comparative efficacy of steam distillation and Ultrasonic-Assisted Extraction (UAE), using ethanol as a solvent to extract crude extract from Coffea canephora husks. A comparative experiment was conducted using 200g of Coffea canephora husks for each extraction method (n=3 per method). Yields were measured in mL. An independent sample t-test was used to compare the mean yields between the two methods. UAE yielded significantly more crude extract (mean = 303.33 mL, SD = 55.08 mL) than steam distillation (mean = 170 mL, SD = 26.46 mL) (t = -3.78, df = 4, p = 0.019). Ultrasonic-assisted extraction (UAE) yielded significantly more crude extract from Coffea canephora husks than steam distillation, despite greater variability in UAE yields. However, further research is needed to characterize the extracted material and explore its potential applications. Future research should focus on the chemical characterization of the extract, comparison with other extraction methods, and investigation of possible applications in biofuel production or other industrial uses. Larger sample sizes are also recommended to enhance statistical power.
Keywords
crude extract, coffee husks, ethanol, steam distillation, ultrasonic-assisted extraction
Research Theme (for Paper Presentation and Poster Presentation submissions only)
Sustainability, Environment, and Energy (SEE)
Initial Consent for Publication
yes
Statement of Originality
yes
Crude Extract from Robusta Coffee (Coffea canephora) Husks Using Ethanol: Steam versus Ultrasonic
The global demand for renewable energy sources necessitates exploring sustainable alternatives to fossil fuels. Coffee husks, a significant agricultural waste product, represent a potential feedstock for biofuel production. This study investigated the comparative efficacy of steam distillation and Ultrasonic-Assisted Extraction (UAE), using ethanol as a solvent to extract crude extract from Coffea canephora husks. A comparative experiment was conducted using 200g of Coffea canephora husks for each extraction method (n=3 per method). Yields were measured in mL. An independent sample t-test was used to compare the mean yields between the two methods. UAE yielded significantly more crude extract (mean = 303.33 mL, SD = 55.08 mL) than steam distillation (mean = 170 mL, SD = 26.46 mL) (t = -3.78, df = 4, p = 0.019). Ultrasonic-assisted extraction (UAE) yielded significantly more crude extract from Coffea canephora husks than steam distillation, despite greater variability in UAE yields. However, further research is needed to characterize the extracted material and explore its potential applications. Future research should focus on the chemical characterization of the extract, comparison with other extraction methods, and investigation of possible applications in biofuel production or other industrial uses. Larger sample sizes are also recommended to enhance statistical power.
https://animorepository.dlsu.edu.ph/conf_shsrescon/2025/paper_see/35
