GB634128A - Separation of delta-tocopherol from vegetable oils - Google Patents
Separation of delta-tocopherol from vegetable oilsInfo
- Publication number
- GB634128A GB634128A GB18396/47A GB1839647A GB634128A GB 634128 A GB634128 A GB 634128A GB 18396/47 A GB18396/47 A GB 18396/47A GB 1839647 A GB1839647 A GB 1839647A GB 634128 A GB634128 A GB 634128A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tocopherol
- concentrate
- mixed
- tocopherols
- vegetable oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
- C07D311/70—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with two hydrocarbon radicals attached in position 2 and elements other than carbon and hydrogen in position 6
- C07D311/72—3,4-Dihydro derivatives having in position 2 at least one methyl radical and in position 6 one oxygen atom, e.g. tocopherols
Abstract
A concentrate of mixed tocopherols is obtained by the high-vacuum distillation of a vegetable oil in the conventional manner, e.g. at a pressure of 0.01 mm. to 0.001 mm. and a temperature about 150 DEG to 250 DEG C. In example (5), soya bean oil is distilled at 150-170 DEG C. at 0.003 mm. pressure to obtain mixed a -, g - and d -tocopherol.ALSO:d -Tocophenol, hithertofore unknown, is obtained by treating a vegetable oil, e.g. soya bean oil, to separate a mixed tocopherol concentrate and then separating d -tocopherol from the mixed concentrate by fractional crystallization and/or chromatography. The methods by which the tocopherol concentrate may be obtained from the vegetable oil are high-vacuum, unobstructed-path distillation, selective adsorption, solvent extraction, saponification and combinations thereof. When using high vacuum distillation the phosphatide sludge is first removed and the mixed concentrate obtained as a 1 per cent "cut" of the distillant. In separating the mixed concentrate by fractional crystallization the tocopherols are esterified with an acid halide such as palmitoyl chloride, lauroyl bromide, myristoyl iodide, dinitrobenzoyl chloride and phenylazobenzoyl chloride. The a -, b - and g -tocopherols are precipitated whilst the d -tocopherol remains in solution. Alternative d -tocopherol is obtained by the usual chromatographic methods. Detailed examples are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US634128XA | 1946-07-19 | 1946-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB634128A true GB634128A (en) | 1950-03-15 |
Family
ID=22049024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18396/47A Expired GB634128A (en) | 1946-07-19 | 1947-07-11 | Separation of delta-tocopherol from vegetable oils |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB634128A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5138075A (en) * | 1983-07-05 | 1992-08-11 | Kuraray Co., Ltd. | Extractive separation method |
-
1947
- 1947-07-11 GB GB18396/47A patent/GB634128A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5138075A (en) * | 1983-07-05 | 1992-08-11 | Kuraray Co., Ltd. | Extractive separation method |
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