CN113897241A - Vegetable oil dehydration method - Google Patents
Vegetable oil dehydration method Download PDFInfo
- Publication number
- CN113897241A CN113897241A CN202111200420.0A CN202111200420A CN113897241A CN 113897241 A CN113897241 A CN 113897241A CN 202111200420 A CN202111200420 A CN 202111200420A CN 113897241 A CN113897241 A CN 113897241A
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- CN
- China
- Prior art keywords
- vegetable oil
- sodium carbonate
- carbonate powder
- oil
- distillation
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/12—Refining fats or fatty oils by distillation
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a vegetable oil dehydration method, which comprises the following steps: step one, obtaining sodium carbonate powder for later use; mixing sodium carbonate powder with vegetable oil, wherein the molar ratio of water to sodium carbonate powder in the vegetable oil is 1-10: 1; and step three, separating the vegetable oil by distillation, and then cooling to obtain the purified vegetable oil. According to the invention, sodium carbonate is added into the vegetable oil, so that free water is changed into combined water, iron ions and copper ions are precipitated, and then distillation separation is carried out, and the vegetable oil which is purer and has a longer shelf life is obtained.
Description
Technical Field
The invention belongs to the field of food, and particularly relates to a vegetable oil dehydration method.
Background
Many vegetable oils are obtained by pressing. However, when the pressing is carried out, besides the grease is pressed out, the water and the scraps in the plants, copper ions, iron ions and the like are simultaneously pressed out. And the existence of the debris and the moisture enables the grease to form an environment suitable for the survival of microorganisms and become mildewed easily. And the existence of copper ions and iron ions enables the grease to be easily oxidized and decomposed, and the storage time of the grease is also reduced. Therefore, a method for effectively removing water, impurities and copper and iron ions in the vegetable oil is needed.
Disclosure of Invention
In order to solve the problems, the invention discloses a vegetable oil dehydration method. According to the invention, sodium carbonate is added into the vegetable oil, so that free water is changed into combined water, iron ions and copper ions are precipitated, and then distillation separation is carried out, and the vegetable oil which is purer and has a longer shelf life is obtained.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a vegetable oil dehydration method comprises the following steps:
step one, obtaining sodium carbonate powder for later use;
mixing sodium carbonate powder with vegetable oil, wherein the molar ratio of water to sodium carbonate powder in the vegetable oil is 1-10: 1;
and step three, separating the vegetable oil by distillation, and then cooling to obtain the purified vegetable oil.
In a further improvement, in the second step, when the sodium carbonate powder is mixed with the vegetable oil, the sodium carbonate powder is blown into the vegetable oil by nitrogen gas, and the vegetable oil is in a stirring state.
Further improved, the vegetable oil is in a stirring state, and the stirring speed is 120-.
In a further improvement, in the first step, the particle size of the sodium carbonate powder is less than or equal to 200 meshes.
In a further improvement, in the second step, the molar ratio of water to sodium carbonate powder in the vegetable oil is 5: 1.
In a further improvement, in the third step, the distiller is in a negative pressure state when distillation is carried out.
In a further improvement, the pressure in the distiller is controlled to be 40-80kPa when the distillation is carried out.
In a further improvement, the temperature during distillation is 120-180 ℃.
The invention has the advantages that:
1. adding sodium carbonate to generate sodium carbonate decahydrate with water, and changing free water into bound water to reduce the water content of the vegetable oil;
2. the carbonate ions combine with the iron and copper ions to generate insoluble substances, iron carbonate and copper carbonate, thereby effectively preventing them from being distilled out with the oil vapor during distillation.
3. Nitrogen is filled in the vegetable oil to form a spongy structure, which is more beneficial to the rapid distillation of the vegetable oil and plays a role in protecting the vegetable oil and preventing the vegetable oil from being oxidized.
4. The distillation temperature is reduced by the negative pressure.
5. Detailed description of the preferred embodiments
The present invention is further illustrated by the following examples.
Example 1
A peanut oil dehydration method comprises the following steps:
step one, obtaining sodium carbonate powder of 200 meshes for later use;
stirring the peanut oil at 200 revolutions per minute, blowing sodium carbonate powder into the peanut oil through nitrogen, and mixing the sodium carbonate powder with the peanut oil, wherein the molar ratio of water to the sodium carbonate powder in the peanut oil is 10: 1;
and step three, controlling the pressure in the distiller at 40kPa, distilling at 180 ℃ to separate the peanut oil, and cooling to obtain the purified peanut oil.
Example 2
A peanut oil dehydration method comprises the following steps:
step one, obtaining sodium carbonate powder of 200 meshes for later use;
stirring the peanut oil at 200 revolutions per minute, blowing sodium carbonate powder into the peanut oil through nitrogen, and mixing the sodium carbonate powder with the peanut oil, wherein the molar ratio of water to the sodium carbonate powder in the peanut oil is 2: 1;
and step three, controlling the pressure in the distiller at 80kPa, distilling at 180 ℃ to separate the peanut oil, and cooling to obtain the purified peanut oil.
Example 3
A tea seed oil dehydration method comprises the following steps:
step one, obtaining 250-mesh sodium carbonate powder for later use;
step two, stirring the tea seed oil at 120 revolutions per minute, blowing sodium carbonate powder into the tea seed oil through nitrogen, and mixing the sodium carbonate powder with the tea seed oil, wherein the molar ratio of water to the sodium carbonate powder in the tea seed oil is 1: 1;
and step three, controlling the pressure in the distiller at 40kPa, distilling at 120 ℃ to separate the tea seed oil, and cooling to obtain the purified tea seed oil.
Example 4
A tea seed oil dehydration method comprises the following steps:
step one, obtaining 300-mesh sodium carbonate powder for later use;
step two, stirring the tea seed oil at 150 revolutions per minute, blowing sodium carbonate powder into the tea seed oil through nitrogen, and mixing the sodium carbonate powder with the tea seed oil, wherein the molar ratio of water to the sodium carbonate powder in the tea seed oil is 5: 1;
and step three, controlling the pressure in the distiller at 60kPa, distilling at 150 ℃ to separate the tea seed oil, and cooling to obtain the purified tea seed oil.
Example 5
A method for dehydrating olive oil, comprising the steps of:
step one, obtaining sodium carbonate powder of 200 meshes for later use;
step two, stirring the olive oil at 180 revolutions per minute, blowing sodium carbonate powder into the olive oil through nitrogen at the same time, and mixing the sodium carbonate powder with the olive oil, wherein the molar ratio of water to the sodium carbonate powder in the olive oil is 3: 1;
and step three, distilling at 150 ℃ under the pressure of 60kPa in a distiller to separate the olive oil, and then cooling to obtain the purified olive oil.
Example 6
A method for dehydrating olive oil, comprising the steps of:
step one, obtaining 220-mesh sodium carbonate powder for later use;
step two, stirring the olive oil at 160 revolutions per minute, blowing sodium carbonate powder into the olive oil through nitrogen at the same time, and mixing the sodium carbonate powder with the olive oil, wherein the molar ratio of water to the sodium carbonate powder in the olive oil is 6: 1;
and step three, controlling the pressure in the distiller at 70kPa, distilling at 170 ℃ to separate the olive oil, and then cooling to obtain the purified olive oil.
After the detection of the above examples, the water content is less than 0.1%, and the vegetable oil is substantially free of iron ions and copper ions, so that the storage time of the vegetable oil is effectively prolonged.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described without departing from the generic concept as defined by the claims and the equivalents thereof.
Claims (8)
1. A vegetable oil dehydration method is characterized by comprising the following steps:
step one, obtaining sodium carbonate powder for later use;
mixing sodium carbonate powder with vegetable oil, wherein the molar ratio of water to sodium carbonate powder in the vegetable oil is 1-10: 1;
and step three, separating the vegetable oil by distillation, and then cooling to obtain the purified vegetable oil.
2. The method for dehydrating vegetable oil according to claim 1, wherein in the second step, when the sodium carbonate powder is mixed with the vegetable oil, the sodium carbonate powder is blown into the vegetable oil by nitrogen gas, and the vegetable oil is in a stirred state.
3. The method of claim 2, wherein the vegetable oil is in a stirred state and the stirring speed is 120-200 rpm.
4. The method of dehydrating vegetable oil according to claim 1, wherein in step one, the particle size of the sodium carbonate powder is 200 mesh or smaller.
5. The method for dehydrating vegetable oil according to claim 1, wherein in the second step, the molar ratio of water to sodium carbonate powder in the vegetable oil is 5: 1.
6. The method for dehydrating vegetable oil according to claim 1, wherein in the third step, the distillation is performed while the distiller is in a negative pressure state.
7. A process for dehydrating vegetable oil according to claim 1, wherein the distillation is carried out while controlling the pressure in the distiller to 40 to 80 kPa.
8. The method for dehydrating vegetable oil as set forth in claim 1, wherein the temperature at the time of distillation is 120-180 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200420.0A CN113897241A (en) | 2021-10-15 | 2021-10-15 | Vegetable oil dehydration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200420.0A CN113897241A (en) | 2021-10-15 | 2021-10-15 | Vegetable oil dehydration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113897241A true CN113897241A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111200420.0A Pending CN113897241A (en) | 2021-10-15 | 2021-10-15 | Vegetable oil dehydration method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5962056A (en) * | 1987-07-23 | 1999-10-05 | Baxter International Inc. | Process for purifying olive oil |
| CN106221889A (en) * | 2016-07-26 | 2016-12-14 | 玉林市武宁油茶种植有限公司 | A kind of method of oil tea oil expression |
| CN111748409A (en) * | 2020-07-24 | 2020-10-09 | 湖北葛店人福药用辅料有限责任公司 | Vegetable oil and refining method thereof |
| CN113493721A (en) * | 2021-08-02 | 2021-10-12 | 沅陵县康欣园生态茶油科技有限公司 | Preparation method of tea seed oil easy to store |
-
2021
- 2021-10-15 CN CN202111200420.0A patent/CN113897241A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5962056A (en) * | 1987-07-23 | 1999-10-05 | Baxter International Inc. | Process for purifying olive oil |
| CN106221889A (en) * | 2016-07-26 | 2016-12-14 | 玉林市武宁油茶种植有限公司 | A kind of method of oil tea oil expression |
| CN111748409A (en) * | 2020-07-24 | 2020-10-09 | 湖北葛店人福药用辅料有限责任公司 | Vegetable oil and refining method thereof |
| CN113493721A (en) * | 2021-08-02 | 2021-10-12 | 沅陵县康欣园生态茶油科技有限公司 | Preparation method of tea seed oil easy to store |
Non-Patent Citations (1)
| Title |
|---|
| 张云华编著: "《食品经营与选购卫生指南》", 山东大学出版社, pages: 168 - 170 * |
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