Membrane-Based Method for Selective Fractionation of Essential Oils

Abstract

The present disclosure generally relates to (1) reducing impurities, i.e., undesired natural components such as waxes and undesired synthetic materials such as agrochemicals and other environmental pollutants, or (2) fractionating essential oils using at least one selective membrane The method of natural components present.

Description

technical field

[0001] The present disclosure generally relates to (1) the reduction of impurities, i.e., undesired natural components such as waxes and undesired synthetic materials such as agrochemicals and other environmental pollutants, or (2) fractionation using at least one selective nanofiltration membrane The method of natural components present in essential oils. Background technique

[0002] Essential oils are produced from plant material via three main routes, distillation, extraction with a suitable hydrophobic solvent, and expression (physical crushing), depending on the location of the oil within the plant material and the inherent properties of the oil. In all cases, the production technique produces a solution containing a mixture of compounds. In many cases, essential oils must be removed from the second aqueous phase that is present due to the method of preparation. In addition, the valuable components of the oil must often be further separated from undes...

Examples

Embodiment 1

[0122] Example 1 - Decolorization from Single Orange Oil

[0123] will contain PuraMem TM A dead-end METcell filter tank (Evonik Membrane Extraction Technology Ltd., UK) of S380 organic solvent nanofiltration membrane (Evonik Membrane Extraction Technology Ltd., UK) specimen was used for this experiment - for a schematic diagram of the METcell dead-end filtration system, see Figure 1 . PuraMem TM S380 is prepared according to DE10 2009 047 351 with 600 g.mol -1 Nominal molecular weight cut-offs for silicone-coated membranes. PuraMem was obtained by filtering 200 mL of limonene (Sigma-Aldrich, Germany) at ambient temperature and 30 bar filtration pressure. TM S380 Membrane is stripped of conditioner (preservative) making the membrane ready for use.

[0124] Once the membrane was prepared, the filter tank was emptied and refilled with 100 mL single orange oil. The single orange oil was filtered at a temperature of 30°C and a filtration pressure of 30 bar. 75 mL of oil w...

Embodiment 3

[0130] Example 3 - Removal of Natural Impurities (Waxes) from Orange Oil

[0131] will contain PuraMem TM A dead-end METcell filter tank (Evonik Membrane Extraction Technology Ltd., UK) of S380 organic solvent nanofiltration membrane (Evonik Membrane Extraction Technology Ltd., UK) specimen was used for this experiment - for a schematic diagram of the METcell dead-end filtration system, see Figure 1 . PuraMem TM S380 is prepared according to DE10 2009 047 351 with 600 g.mol -1 Nominal molecular weight cut-offs for silicone-coated membranes. PuraMem was obtained by filtering 200 mL of limonene (Sigma-Aldrich, Germany) at ambient temperature and 30 bar filtration pressure. TM S380 Membrane is stripped of conditioner (preservative) making the membrane ready for use.

[0132] Once the membrane was prepared, the filter tank was emptied and refilled with 100 mL of five times orange oil. The fivefold orange oil was filtered at a temperature of 30°C and a filtration pressure o...

Embodiment 4

[0134] Example 4 - Fractionation of Components in Single Orange Oil

[0135] will contain DuraMem TM A METcell cross-flow filtration system (Evonik Membrane Extraction Technology Ltd, UK) of the S XP2 organic solvent nanofiltration membrane (Evonik Membrane Extraction Technology Ltd.) test piece was used for this experiment - see Figure 5 for a schematic diagram of the METcell cross-flow filtration system. DuraMem TM S XP2 is prepared according to DE10 2009 047 351 with about 350 g.mol -1 Nominal molecular weight cut-offs for silicone-coated membranes. DuraMem was obtained by filtering 200 mL of limonene (Sigma-Aldrich, Germany) through the membrane coupon at ambient temperature and 30 bar filtration pressure. TM S XP2 membranes were stripped of conditioners (preservatives) making the membranes ready for use.

[0136] Once the membrane is prepared, the filter tank is emptied and filled with 500 mL of PuraMem TM The S380 membrane was processed according to the method o...

technical field

[0001] The present disclosure generally relates to (1) the reduction of impurities, i.e., undesired natural components such as waxes and undesired synthetic materials such as agrochemicals and other environmental pollutants, or (2) fractionation using at least one selective nanofiltration membrane The method of natural components present in essential oils. Background technique

[0002] Essential oils are produced from plant material via three main routes, distillation, extraction with a suitable hydrophobic solvent, and expression (physical crushing), depending on the location of the oil within the plant material and the inherent properties of the oil. In all cases, the production technique produces a solution containing a mixture of compounds. In many cases, essential oils must be removed from the second aqueous phase that is present due to the method of preparation. In addition, the valuable components of the oil must often be further separated from undes...

Examples

Embodiment 1

[0122] Example 1 - Decolorization from Single Orange Oil

[0123] will contain PuraMem TM A dead-end METcell filter tank (Evonik Membrane Extraction Technology Ltd., UK) of S380 organic solvent nanofiltration membrane (Evonik Membrane Extraction Technology Ltd., UK) specimen was used for this experiment - for a schematic diagram of the METcell dead-end filtration system, see Figure 1 . PuraMem TM S380 is prepared according to DE10 2009 047 351 with 600 g.mol -1 Nominal molecular weight cut-offs for silicone-coated membranes. PuraMem was obtained by filtering 200 mL of limonene (Sigma-Aldrich, Germany) at ambient temperature and 30 bar filtration pressure. TM S380 Membrane is stripped of conditioner (preservative) making the membrane ready for use.

[0124] Once the membrane was prepared, the filter tank was emptied and refilled with 100 mL single orange oil. The single orange oil was filtered at a temperature of 30°C and a filtration pressure of 30 bar. 75 mL of oil w...

Embodiment 3

[0130] Example 3 - Removal of Natural Impurities (Waxes) from Orange Oil

[0131] will contain PuraMem TM A dead-end METcell filter tank (Evonik Membrane Extraction Technology Ltd., UK) of S380 organic solvent nanofiltration membrane (Evonik Membrane Extraction Technology Ltd., UK) specimen was used for this experiment - for a schematic diagram of the METcell dead-end filtration system, see Figure 1 . PuraMem TM S380 is prepared according to DE10 2009 047 351 with 600 g.mol -1 Nominal molecular weight cut-offs for silicone-coated membranes. PuraMem was obtained by filtering 200 mL of limonene (Sigma-Aldrich, Germany) at ambient temperature and 30 bar filtration pressure. TM S380 Membrane is stripped of conditioner (preservative) making the membrane ready for use.

[0132] Once the membrane was prepared, the filter tank was emptied and refilled with 100 mL of five times orange oil. The fivefold orange oil was filtered at a temperature of 30°C and a filtration pressure o...

Embodiment 4

[0134] Example 4 - Fractionation of Components in Single Orange Oil

[0135] will contain DuraMem TM A METcell cross-flow filtration system (Evonik Membrane Extraction Technology Ltd, UK) of the S XP2 organic solvent nanofiltration membrane (Evonik Membrane Extraction Technology Ltd.) test piece was used for this experiment - see Figure 5 for a schematic diagram of the METcell cross-flow filtration system. DuraMem TM S XP2 is prepared according to DE10 2009 047 351 with about 350 g.mol -1 Nominal molecular weight cut-offs for silicone-coated membranes. DuraMem was obtained by filtering 200 mL of limonene (Sigma-Aldrich, Germany) through the membrane coupon at ambient temperature and 30 bar filtration pressure. TM S XP2 membranes were stripped of conditioners (preservatives) making the membranes ready for use.

[0136] Once the membrane is prepared, the filter tank is emptied and filled with 500 mL of PuraMem TM The S380 membrane was processed according to the method o...

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