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“Extraction Of Essential oil From Nuts and Spices”

By: Katy Salter, Monique Gray, and Ronnie Groller. “Extraction Of Essential oil From Nuts and Spices”.

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“Extraction Of Essential oil From Nuts and Spices”

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  1. By: Katy Salter, Monique Gray, and Ronnie Groller “Extraction Of Essential oil From Nuts and Spices”

  2. Peanut oil is generally used for cooking purposes. For example, it is used in the fast food industry, it can be used to make soap and soap products, and it can be used to synthesize biodiesel, like we did in organic II lab. Almond oil is another oil that has important applications. Almond oil is used for cooking as well, and it can be used as a skin treatment. Also, it is associated with reduced cardiovascular risks. One of it derivatives, Amygdalin, can be used as a cancer treatment, but research is still being done on its effectivity. Background

  3. Cinnamaldehyde is an essential oil that gives cinnamon its smell and flavor, like most essential oils from spices. Extracted essential oils from spices, such as cinnamon, can be used in artificial flavoring, and in candles and cosmetics. Also, cinnamaldehyde can be used as an antimicrobial and fungicide that can be sprayed on fruits and vegetables. Thus, extraction of these essential oils is important, and methods for extracting these oils serve important purposes. Therefore, we wanted to develop a method for extracting essential oils using the SFE. Background

  4. As part of Instrumental Analytical Chemistry course we are required to do a real world project, thus, for this real world experiment we, as a group, have decided to experiment with extracting essential oils from spices and nuts. Thus, we want to see if extraction of essential oils can be done using SFE and characterization can be done using the IR. PURPOSE The purpose of this experiment was to see if extraction of essential oils can be done using the SFE and to see if characterization can be done using IR Spec. Also, we wanted to find relative setting that can be used to extract these oils. The majority of the experimental results were analyzed with more of a qualitative perspective than quantitative. Introduction

  5. materials Samples • Cinnamon Sticks • Almonds • Raw Peanuts • Hexane ( As Solvent) Standards • Almond Oil • Peanut Oil • Cinnamaldehyde (Structure) Instruments Used • SFE • IR

  6. Supercritical Fluid Extraction Turned on CO2, turned on the SFE. SFE was cleaned and then samples were ran. IR Setup the instrument, ran a background, and ran samples. Procedure

  7. Sample Preparation & Analysis: Crushed a sufficient amount of each sample using a mortal and pestle. Weigh about 4g of each sample (Spices or Nuts). Weigh an empty 25mL Erlenmeyer flask (this will be used to collect the sample), While collecting sample, place parafilm over opening of flask to prevent loss of product. Re-weighed the 25mL Erlenmeyer flask with sample to get an estimate of how much was extracted. Ran an IR of sample and compared to standard samples that were already run or looked for characteristic peaks related essential oil (cinnamon). Procedure

  8. SFE Peanuts Masses Peanuts : 4.2025g 25mL Flask: 21.1802g Final : 21.4567g 21.4567 – 21.1802g = 0.2765g oil 0.2765/4.2025g = 0.06579 x 100= (6.579%) Super Critical Fluid Extraction Settings Oven Temperature: 110⁰C Valve Temperature: 120⁰C Pressure: 253 barr Procedure

  9. SFE Almonds Masses Almonds: 4.0198g 25mL Flask: 24.3366g Final: 24.4097g 24.4097g – 24.3366g = 0.0731g 0.0731g – 4.0198g = 0.018g x 100 (1.80%) Super Critical Fluid Extraction Settings Oven Temperature: 130⁰C Valve Temperature: 120⁰C Pressure: 250 Barr Procedure

  10. SFE Cinnamon Masses Cinnamon:4.0712g 25mL Flask: 24.3360g Final: (We forgot to weight)  Super Critical Fluid Extraction Setting Oven Temperature: 100⁰C Valve Temperature: 110⁰C Pressure: 240 barr Procedure

  11. Peanuts Extraction of the essential oil of peanuts was done using the SFE at the setting (Oven Temperature: 110⁰C, Valve Temperature: 120⁰C, Pressure: 253 barr) . Thus, the experiment was ran for about 30-40 minutes. Thus, 0.06579g of peanut oil was extracted. A couple drops of hexane were added to the flask to dissolve the oil. The IR indicated that there a ketone peak. Also, the IR spectra of the extracted oil resembled the IR spectra of the peanut oil standard. The appearance of the oil greatly resembled that of the pure peanut oil. Results

  12. Peanut oil standard

  13. Extracted peanut oil

  14. Almonds Extraction of the essential oil of almonds was done using the SFE at setting (Oven Temperature: 130⁰C, Valve Temperature: 120⁰C, Pressure: 250 Barr) thus, the experiment was ran for about 30-40 min and 0.0731g of almond oil was extracted. A couple drops of hexane were added to the flask to dissolve the oil. The IR indicated that there a ketone peak. Also, the IR spectra of the extracted oil resembled the IR spectra of the Almond oil standard. The Appearance of the oil greatly resembled that of the pure almond oil. Results

  15. Almond oil standard

  16. Extracted almond oil

  17. Cinnamon Extraction of the cinnamon was done using the SFE at setting (Oven Temperature: 100⁰C, Valve Temperature: 110⁰C, Pressure: 240 barr). Thus, the experiment was ran for about 30-40 minutes. The amount of sample that was extracted is unknown but the product was visible and the IR indicated that an essential oil was extracted. A couple drops of hexane were added to the flask to dissolve some of the product. The IR indicated that there was a ketone peak and there was some aromatics activity in the fingerprint region.. The IR of the extracted cinnamon was compared to the standard structure that we obtained (Cinnamaldehyde), and the IR showed characteristic peaks which were ketone of an aldehyde, and some aromatic peaks related to the structure. The appearance of the oil was a yellowish gold and it smelled like cinnamon! Results

  18. Cinnamon extract

  19. Cinnamaldehyde

  20. Based on the IR spectra and IR standard spectra, we were successful at using the SFE to extract essential oils from the peanuts, almonds, and cinnamon. Conclusion

  21. We developed a reasonable method for extracting essential oils from nuts and spices, however, the temperature and pressure settings, we used for the SFE, had to be changed throughout the experiment. Thus, there is still room for improvement of the temperatures and pressure settings to make the extraction of essential oils better. Also, developing quantitative data could be done in further experiments because extraction efficiencies can be calculated and the amount of extracted product could be increased by better temperature and pressure setting and possibly with greater amount of starting material. Discussion

  22. Quality Control of Commercially Available Essential Oils by Means of Raman Spectroscopy Katrin R. Strehle, Petra Rösch, Dorothea Berg, Hartwig Schulz, and Jürgen Popp Journal of Agricultural and Food Chemistry 2006 54 (19), 7020-7026. Extraction of Essential Oils and Cuticular Waxes with Compressed CO2:  Effect of Extraction Pressure and Temperature Filipe Gaspar. Industrial & Engineering Chemistry Research 2002 41 (10), 2497-2503. Extraction of Essential Oils and Cuticular Waxes with Compressed CO2:  Effect of Matrix Pretreatment F. Gaspar, R. Santos, and, and M. B. King. Industrial & Engineering Chemistry Research 2000 39 (12), 4603-4608 . Works Cited

  23. Questions

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