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PRODUCTIVITY TOOLS Solvent Free Microwave Extraction The New Way to Extract Essential Oils Tim Michel Sales Manager Milestone Inc.

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Presentation on theme: "PRODUCTIVITY TOOLS Solvent Free Microwave Extraction The New Way to Extract Essential Oils Tim Michel Sales Manager Milestone Inc."— Presentation transcript:

1 PRODUCTIVITY TOOLS Solvent Free Microwave Extraction The New Way to Extract Essential Oils Tim Michel Sales Manager Milestone Inc

2 PRODUCTIVITY TOOLS Milestone apps lab, Bergamo Milestone HQ, Bergamo Italy Milestone R&D, Germany Established in 1988 Headquarters in Italy, R&D and manufacturing in Germany Over 15,000 labs use Milestone instruments Core technology/application: microwave based sample prep Milestone Worldwide

3 PRODUCTIVITY TOOLS Milestone Product Range

4 PRODUCTIVITY TOOLS Milestone s NEOS

5 PRODUCTIVITY TOOLS Todays Agenda What is Solvent Free Microwave Extraction (SFME)? Benefits of SFME Where does SFME technology fit best? Other Application of the NEOS

6 PRODUCTIVITY TOOLS Traditional Techniques Essential Oil Extraction Cold Press Hydro Distillation Steam Distillation Solvent Extraction

7 PRODUCTIVITY TOOLS Traditional Techniques Essential Oil Extraction Long Extraction Times Poor Recovery High Energy Consumed Loss of Some Volatile Components Thermal or Hydrolytic Degradation Presence of Toxic Residues

8 PRODUCTIVITY TOOLS The New Technique Solvent Free Microwave Extraction (SFME) Advantages of SFME Shorter Extraction Times High Purity Extracts No Solvents – Green Chemistry Recovery of Volatile Compounds

9 PRODUCTIVITY TOOLS The New Technique Solvent Free Microwave Extraction (SFME) Atmospheric Pressure with No Solvents Heating of Internal Water Essential Oils Evaporated by the In-situ Water Cooling System Condenses the Vapors Excess Water is Refluxed Back to the Extraction Vessel

10 PRODUCTIVITY TOOLS Shorter Extraction Times Extraction of Essential Oils from Aromatic Herbs* * Solvent-free microwave extraction of essential oils from aromatic herbs: comparison with conventional hydro-distillation. Journal of Chromatography A, 1043 (2004) Time (minutes)Yield (%)Time (minutes)Yield (%) Basil Garden Mint Thyme NEOS (SFME)Hydro Distillation

11 PRODUCTIVITY TOOLS Shorter Extraction Times Extraction of Essential Oils from Orange Peel * Solvent free microwave extraction of essential oils. Chemistry Today, Vol. 26 n.2 (2008) Extraction Time (minutes) Yield % Total Oxygenated Compounds (%) Total Non Oxygenated Compounds (%) NEOS Hydro Distillation Cold Pressing

12 PRODUCTIVITY TOOLS High Purity Extract Oxygenated Compounds: More valuable as they are highly scented Monoterpene Hydrocarbons: Less valuable to the fragrance of essential oil SFME has been shown to produce higher amounts of oxygenated compounds than Hydro-distillation Solvent free microwave extraction of Elletaria cardamomum L.: A multivariate study of a new technique for the extraction of essential oil, Journal of Food Engineering, 79 (2007) 1079–1086

13 PRODUCTIVITY TOOLS Green Chemistry Carbon Emissions Regarding environmental impact, the calculated quantity of carbon dioxide rejected in the atmosphere is higher in the case of HD (3464 gCO2/g of essential oil) than for SFME (200 gCO2/g of essential oil). 1 No Solvent The use of solvent for extractions generates waste into the environment. Also, no toxic residue from solvents will be present in extract. 1. An improved microwave Clevenger apparatus for distillation of essential oils from orange peel, Journal of Chromatography A, 1112 (2006)

14 PRODUCTIVITY TOOLS NEOS System Solvent Free Microwave Extraction (SFME) Laboratory of Chemistry of Natural Substances and Food Sciences at the Universit é de la R é union, France Partnership between Milestone and Laboratory, which lead to the grant European patents , and

15 PRODUCTIVITY TOOLS NEOS Hardware Microwave Control Panel Glassware Chiller

16 PRODUCTIVITY TOOLS Microwave IR Sensor Safety Micro Switches Atmospheric Pressure Polymer Coating Microwave Power output of 800 watts

17 PRODUCTIVITY TOOLS Glassware 2 L and 5 L Glass Module Extension Tube Connecting Glass Tube Patented Extraction Module Glass Condenser Chiller

18 PRODUCTIVITY TOOLS Labs Benefited by the NEOS Research/Development Quality Control

19 PRODUCTIVITY TOOLS Flexibility of Applications Microwave Hydrodiffusion and Gravity (MHG) Microwave-Accelerated Steam Distillation (MASD) Microwave-Accelerated Dean Stark (MADS) Microwave Integrated Soxhlet (MIS)

20 PRODUCTIVITY TOOLS Microwave Hydrodiffusion and Gravity (MHG) Higher Boiling Compounds The NEOS-GR for MHG is the result between Milestone and the Université dAvignon et des Pays de Vaucluse, France Led to the grant of the European patent EP A1 An Original Upside Down Microwave Alembic

21 PRODUCTIVITY TOOLS What is Hydro Diffusion? Hydrodiffusion is a type of Steam Distillation. Steam comes from above sample with Hydrodiffusion compared to Steam Distillation where steam comes from below. Less steam needed for the extraction, making the process quicker. Hydrodiffusion is less harsh than Steam Distillation which improves the quality of the extract.

22 PRODUCTIVITY TOOLS Microwave Hydrodiffusion and Gravity (MHG) Higher Boiling Compounds No Solvent Hydrodiffusion Falls by Earth Gravity through Perforated Disc Cooling System

23 PRODUCTIVITY TOOLS Benefits of MHG Shorter Extraction Times Recovery of Higher Boiling Compounds (pigments, flavonoids, carotenoids) Higher Purity of Extracts No Solvents

24 PRODUCTIVITY TOOLS MHG Extracts Extraction of Essential Oil from Rosmarinus officinalis

25 PRODUCTIVITY TOOLS Flexibility of Applications Steam Distillation most common technique Sample sits above steam source generated by microwave heating MASD was better than Steam Distillation in terms of Energy Saving, Rapidity (10 min vs 90 min), Product Yield, Cleanliness and Product Quality.* Microwave Accelerated Steam Distillation (MASD) * F. Chemat, M.E. Lucchesi, J. Smadja, L. Favretto, G. Colnaghi, F. Visinoni, Microwave accelerated steam distillation of essential oil from lavender: rapid, clean and environmentally friendly approach. Analytica Chimica Acta, 2006, 555,

26 PRODUCTIVITY TOOLS Microwave Accelerated Steam Distillation Yield % Total Extraction Time (minutes)1090 Heating Time from °C (minutes)530 Real Extraction Time (minutes)560 MASDSD * F. Chemat, M.E. Lucchesi, J. Smadja, L. Favretto, G. Colnaghi, F. Visinoni, Microwave accelerated steam distillation of essential oil from lavender: rapid, clean and environmentally friendly approach. Analytica Chimica Acta, 2006, 555,

27 PRODUCTIVITY TOOLS Summary Advantages of SFME Shorter Extraction Times High Purity Extracts No Solvents – Green Chemistry Recovery of Volatile Compounds Labs Benefited by SFME Research/Development Quality Control Universities Flexibility of NEOS Microwave Hydrodiffusion and Gravity (MHG) Microwave-Accelerated Steam Distillation (MASD) Microwave-Accelerated Dean Stark (MADS) Microwave Integrated Soxhlet (MIS)

28 PRODUCTIVITY TOOLS Thank You!


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