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Traditional and Modern Methods of Extraction of Essential oils from Aromatic Plants

By Professor S.S. Handa

at

Training Course on Cultivation, Post-harvesting and Processing Technologies of Medicinal and Aromatic Plants in Developing

Countries

Organised by

ICS-UNIDO, Area Science Park, Padriciano, 99-Building L2, 34012 Trieste, Italy

at

Bomaka, Mali (West Africa) 25-29 July, 2005

CONTENT1. Occurrence of essential oils in different parts of a plant.2. Specialized structures for essential oil occurrence 3. Heterogenous constituents of volatile oils4. Production methods of essential oils from plants 5. Aromatic products produced by enzyme release 6. Essential oil Hydrodistillation terminology 7. Mechanism of Hydrodistillation8. Hydrodiffusion9. –do-10. Hydrofussion process11. Hydrolysis12. Effect of Heat13. Essential oil by water distillation14. Traditional equipment for Hydrodistillation15. Traditional equipment for Hydrodistillation16. Traditional process for making Attar by hydrodistillation17. Traditionally popular Indian Attars18. Costing of KEWDA Attar19. Traditional Rural method of Rose Oil by water distillation20. Photographs of Rural lemon grass distillation in Bhutan21. Hydrodistillation equipment for peppermint and lavander22. Clevanger Apparatus23. Advantageous of water distillation24. Disadvantages of water distillation25. Essential oil production by steam and water distillation26. Diagramatic presentation of steam and water distillation27. Baffle system to prevent direct water contact with plant distillation28. Cohobation process of extraction29. Still with separator for connection to return aqueous distillation30. Advantages of steam and water distillation31. Disadvantages of steam and water distillation32. Essential oil by steam distillation33. Diagrammatic presentation of steam distillation34. Advantageous and disadvantageous of steam distillation35. Expression by Sufmatrice36. Expression by pellatrice37. Enfleurage principle38. Enfluurage equipment39. Enflurage process40. Defleurage process41. Enflurage by Hot Maceration42. Sites of Essential Oil production in India43. Modern (Nontraditional methods of extraction of essential oils44. Supercritical fluid extraction (SFE)45. Phytosol extraction technique46. Simultaneous distillation extraction technique (SDE)47. Microwave distillation48. Microscale spinning band distillation

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Reduction Valve

Separator

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