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Solid/liquid extraction
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An extraction and solid technology, applied in food extraction, fat oil/fat production, fatty acid preparation/refining, etc., can solve problems such as operational hazards and unsatisfactory methods
Pending Publication Date: 2016-06-08
MINAFIN
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Abstract
Description
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[0011] Finally, taking into account the yield, selectivity, simplicity, cost, toxicity, convenience, number of steps (especially extraction) and and / or rapidity, methods involving these conventional aliphatic solvents (especially hexane) may not be satisfactory
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Examples
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Embodiment 1
[0075] Example 1: Extraction from Dried Avocado
[0076] Extraction from dried avocado was performed with hexane (reference) and the following solvents: HMDS, MeTHF, BTF, BHF, MTBE, ETBE.
[0077] Dried avocados were crushed and added to cellulose cartouches (30 to 40 g). Extraction was performed in a Soxhlet extractor (BUCHIB-811). Four sets of extractions were then performed in parallel, and each set consisted of 20 extraction / siphon cycles. Once the extraction has been terminated, the extraction solvent is evaporated and the residue from which the solvent has been removed is weighed. The weight yields are then compared. The results are given in Table 1.
[0078] Table 1
[0079]
[0080]
[0081] This result shows that the solvent according to the invention has an extraction capacity comparable to that of hexane.
[0082] The extracted oil obtained using the solvent according to the invention has a higher content of unsaponifiables relative to hexane; in the ca...
Embodiment 2
[0083] Example 2: Extraction from freeze-dried avocado pulp powder
[0084] Freeze-dried avocado pulp powder was extracted according to the method described in Example 1 using hexane (reference) and the following solvents: HMDS, MeTHF, BTF, MTBE, ETBE. The results are given in Table 2.
[0085] Table 2
[0086]
[0087] This result shows that the solvent according to the invention has an extraction capacity comparable to that of hexane.
[0088] The extracted oil obtained using the solvent according to the invention has a higher content of unsaponifiables relative to hexane; in the case of MeTHF the content is increased by 50%.
Embodiment 3
[0089] Example 3: Extraction of oil from dried avocado
[0090] Extraction from dried avocado was performed with hexane (reference) and the following solvents: BTF and ETBE.
[0091] Dried avocados were crushed and added to cellulose cylinders (30 to 40 g). Extraction was performed in a Soxhlet extractor (BUCHIB-811). Four sets of extractions were then performed in parallel, the first set consisting of 5 extraction cycles, the second set consisting of 10 cycles, the third set consisting of 15 cycles and the fourth set consisting of 20 cycles. Once the extraction has been terminated, the extraction solvent is evaporated and the residue from which the solvent has been removed is weighed. The weight yields are then compared.
[0092] The results are given in Table 3 below.
[0093] table 3
[0094]
[0095] The weight yields obtained with ETBE were similar to those obtained with the hexane reference: thus, ETBE provides an alternative to the use of hexane in solid / liqui...
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Abstract
The invention relates to a method for the solid / liquid extraction of an oil or butter, particularly having a high unsaponifiable content, contained in at least one solidvegetable matter or a micro-organism. The method includes at least the following steps: solid / liquid extraction of at least one solid vegetable matter or a micro-organism using a first solventsystem comprising a concentration of solvent selected from among fluorinated aromatic solvents, fluoroaromatic solvents, tert-butyl ether, a solvent including at least one silicon atom, methyltetrahydrofuran or a mixture therefrom, and optionally, recovery of a fraction comprising the oil or butter, particularly unsaponifiable enriched. The invention also relates to an unsaponifiable fraction, oil or butter obtained using this method and to compositions containing said oil or fraction.
Description
[0001] This application is a divisional application of the Chinese patent application with the application number 201180007196.1, the application date is January 31, 2011, and the invention name is "solid / liquid extraction". technical field [0002] The present invention relates to a process for the solid / liquid extraction of oil or butter from solid vegetable matter or microorganisms; in particular, said oil or said butter comprising a high content of unsaponifiables. Background technique [0003] The unsaponifiable or unsaponifiable fraction of the fat consists of compounds which form a fraction of the fat which remains insoluble in water after prolonged action of alkali and which can be extracted with organic solvents. [0004] Most vegetable oil unsaponifiables comprise major classes of substances. These main classes include saturated or unsaturated hydrocarbons, fatty or terpene alcohols, sterols, tocopherols, carotenoid pigments, lutein, and in the case of some oils on...
Claims
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