[Dictation for you] Extraction of plant aromatic oil

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dictation

1. What are the sources of natural flavors? 2. What is the chemical composition of plant aromatic oil? 3. What are the physical properties of plant aroma oil? 4. What are the extraction methods of plant aromatic oil? 5. What is the principle of steam distillation? 6. What are the classifications of steam distillation? 7. What is the extraction method? 8. What method can be used to extract rose essential oil? 9. What is the basic process of extracting rose essential oil by steam distillation? 10. How to improve the quality of the product during distillation? 11. What are the precautions for using steam distillation equipment? 12. What are the characteristics of orange peel essential oil? 13. What method is suitable for extracting orange peel oil? why? 14. What is the principle of the pressing method? 15. What are the advantages and disadvantages of the pressing method? 16. What is the basic process of extracting orange peel essential oil? 17. What are the effects of lime water soaking? 18. In order to make orange peel oil easy to separate from water during pressing, what should be done? 19. How to calculate the yield of plant aromatic oil?

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1. Natural spices are mainly derived from animals (musk, civet, beaver and sperm whale, etc.) and plants (about 50 families of plants) Different organs), fungi in microorganisms can also produce aromatic compounds. 2. The composition of plant aroma oil mainly includes terpenoids and their derivatives. 3. Plant aroma oil has strong volatility and is easily soluble in organic solvents. 4. The extraction methods of aromatic oil include distillation, pressing, extraction, etc. 5. The principle of the steam distillation method is to use steam to carry out the more volatile plant aroma oil to form an oil-water mixture. After cooling, the mixture will separate the oil layer and the water layer again. 6. According to the position of the raw materials in the distillation process, the steam distillation method is divided into water distillation, water distillation and water vapor distillation. 7. The extraction method is to soak the crushed and dried plant raw materials in an organic solvent to dissolve the aromatic oil in the organic solvent, and then evaporate the organic solvent to obtain pure plant aromatic oil. However, the organic solvent used for extraction must be refined in advance to remove impurities, oth Buy Phenibut Online erwise it will affect the quality of the aromatic oil. 8. The steam distillation method is preferred to extract rose essential oil, because rose essential oil is chemically stable, hardly soluble in water, easily soluble in organic solvents, and can be distilled with steam, and steam distillation Simple and easy to separate; extraction method can also be used. 9. Basic process: fresh rose + clear water steam distillation oil-water mixture (milky white emulsion) add NaCl, separate the oil layer add anhydrous Na2SO4, remove water filter, remove solids Na2SO4 rose oil10. The quality can be improved by controlling the distillation temperature and appropriately extending the distillation time. 11. Precautions during distillation operation: When installing the instrument, generally follow the order from bottom to top and from left to right. The order of disassembling the instrument is opposite to that of installation; Ensure that the condenser tube enters and exits from the bottom; When the distillation starts, first pass cold water and then heat; when the distillation is completed, first remove the heat source and then stop the water flow; Properly extend the distillation time and control the speed of collecting droplets at 1-2 drops p Phenibut Manufacturers er second. 12. Orange peel oil is colorless and transparent, with attractive orange fragrance. 13. The extraction of orange peel oil generally adopts the pressing method, because the steam distillation method will cause problems such as raw material scorch and active ingredient hydrolysis. 14. The squeezing method is a method of squeezing out the aromatic oil in the peel by mechanical pressure. 15. Advantages of the pressing method: low production cost, easy to maintain the original structure and function of the raw materials;Disadvantages: separation is more difficult, and the oil yield is relatively low. 16. Basic process: orange peel is dried and dewatered, lime water soaked for more than 10h rinsed in running water, drained squeezed to obtain squeezed liquid ordinary cloth bag filtration + centrifugation to remove solid residues liquid separation, separation Oil layer stand at 5~10℃ for 5~7d (remove fruit wax and moisture) suck out the upper layer of orange peel oil + filter the lower layer to obtain filtrate orange peel oil17. Orange peel is soaked in lime water Function: Lime water can destroy the cell structure, decompose pectin, prevent the orange peel from slipping during pressing, and increase the oil yield; make the squeezed liquid not too high in viscosity, and it will not block the mesh during filtration. 18. In order to make orange peel oil easy to separate from water, add 0.25% NaHCO3 and 5% Na2SO4 equivalent to the quality of orange peel respectively, and adjust the pH to 7-8. 19.