CN101928635A - The preparation method of tomato seed oil - Google Patents

Abstract

The invention relates to a preparation method of tomato seed oil, which comprises the steps of microwave treatment of tomato seeds crushed to a particle size range of 30 to 100 meshes, extraction with supercritical _CO2 for 1.0 to 3.0 hours, and separation of the obtained product, which is tomato seed oil. The tomato seed oil prepared by this method has better properties, and the unsaturated fatty acid contained in the obtained tomato seed oil is nearly 5% higher than that obtained by the traditional solvent method. The fatty acid composition of the tomato seed oil is more in line with the needs of the human body. More than 90% of the tomato seed oil is extracted.

Description

The preparation method of tomato seed oil

technical field

The invention relates to a method for preparing oil, in particular to a method for preparing tomato seed oil.

Background technique

With the improvement of nutritional needs, people are not satisfied with only eating peanut oil, soybean oil, sesame oil, etc. There are many new vegetable oils that will become people's future edible oil.

Oil is not only one of the main sources of life energy, but also has many important physiological functions. Vegetable oils are rich in linoleic acid, gamma-linolenic acid and other components, which are essential fatty acids that cannot be synthesized by the human body. Lack of linoleic acid can cause symptoms such as dry skin and growth retardation in babies. Y-linolenic acid can prevent and treat many diseases, such as senile dementia, hyperlipidemia, coronary heart disease and so on.

my country is rich in tomato seed resources, and my country's tomato production is second only to the United States in the world. At present, because the tomato paste processing factory will discard the processed scraps, it will cause a lot of loss. The oil processing of tomato seeds can not only improve the economic benefits of the enterprise, but also provide people with health-care oil and protein meal for the feed industry, which is beneficial to the comprehensive utilization of resources.

The content of oleic acid and linoleic acid in tomato seed oil is particularly high, which is mainly composed of unsaturated acids (oleic acid and linoleic acid account for more than 80%). Both linoleic acid and oleic acid are nutritionally essential fatty acids, which have the effect of lowering blood lipids. Linoleic acid can also prevent arteriosclerosis. The content of total sterols (cholesterol, stigmasterol, D-7-stigmasterol) in tomato seed oil is zero. Tomato seed oil also contains vitamin E and other biologically active substances. It has a moderate taste and good stability. It is a good health-care edible oil. Although the total oil consumption in the world is generally higher than the production in recent years, there is no industrialized production of tomato seed oil at home and abroad.

The traditional oil production process of tomato seed oil is divided into two categories: press extraction method and solvent extraction method. The former is to directly separate the oil from the oil by physical pressure, without any chemical additives in the whole process, to ensure product safety, sanitation, no pollution, and natural nutrition will not be damaged; the latter usually uses No. 6 solvent oil to pass the oil raw material through It is fully "soaked" and extracted at high temperature, and then processed through a refining process. The biggest feature of this process is its high oil yield. Supercritical _CO2 extraction technology can also be used for extraction. Supercritical carbon dioxide extraction has fast speed, high yield, light oil color, deacidification, decolorization, dewaxing, deodorization, etc. in the extractor at one time.

Contents of the invention

The purpose of this invention is to provide a kind of preparation method of tomato seed oil, the tomato seed oil property of the tomato seed oil prepared by this method is better, and the unsaturated fatty acid contained in its gained tomato seed oil is nearly 5% higher than traditional solvent method , the fatty acid composition of tomato seed oil is more in line with the needs of the human body, and more than 90% of the tomato seed oil in tomato seeds is extracted.

In order to achieve the above object, the present invention adopts the following technical scheme: a preparation method of tomato seed oil, which is characterized in that, after tomato seeds crushed to a particle size range of 30 to 100 meshes are treated with microwaves at 300W to 800W for 5 to 10 minutes, 5 to 10% (v/w) absolute ethanol as entrainer, supercritical CO ₂ extraction, extraction conditions: pressure 20 ~ 50MPa, extraction temperature 40 ~ 60 ° C, extraction time 1.0 ~ 3.0h after separation of the product, namely tomato seed oil.

The particle size of tomato seeds ranges from 30 to 100 mesh.

Tomato seeds are microwaved at 300W-800W for 5-10 minutes.

5-10% (v/w) absolute ethanol is added to the tomato seeds as entrainer.

The pressure of supercritical CO ₂ extraction is 20-50MPa, the extraction temperature is 30-45°C, and the flow rate during supercritical CO ₂ extraction is 10-30kg/h.

After supercritical CO ₂ extraction for 1.0 to 3.0 hours, the resultant is separated, which is tomato seed oil.

Detailed ways

Embodiment 1: after the tomato seed 800W microwave treatment of 50 mesh particle size scopes is pulverized to 10 minutes, add the dehydrated alcohol of 10% (v/w) to make entrainer, supercritical _CO Extraction, extraction condition: pressure 50MPa, extraction temperature 60°C, the extraction time is 2.0h, and the resultant is separated, which is tomato seed oil.

Embodiment 2: After being pulverized to the tomato seed 500W microwave treatment of 100 order particle size ranges 8 minutes, add the dehydrated alcohol of 8% (v/w) to make entrainer, supercritical _CO Extraction, extraction condition: pressure 40MPa, extraction temperature 50°C, the extraction time is 1.0h, and the resultant is separated, which is tomato seed oil.

Embodiment 3: after the tomato seed 300WW microwave treatment of 30 order size ranges is pulverized to 5 minutes, add the dehydrated alcohol of 5% (v/w) to make entrainer, supercritical _CO Extraction, extraction condition: pressure 30MPa, extraction temperature 40°C, the extraction time is 3.0h, and the resultant is separated, which is tomato seed oil.

Claims (6)

1. A preparation method for tomato seed oil, characterized in that, after 300W～800W microwave treatment of tomato seeds in the range of 30～100 mesh particle sizes for 5～10 minutes, add 5～10% (v/w) anhydrous Ethanol as entrainer, supercritical CO ₂ extraction, extraction conditions: pressure 20-50MPa, extraction temperature 40-60°C, extraction time 1.0-3.0h, separate the obtained product, which is tomato seed oil. 2. the preparation method as claimed in claim 1, is characterized in that, the particle size scope of tomato seed is 30～100 orders. 3. The preparation method according to claim 1, characterized in that the tomato seeds are treated with microwaves at 300W-800W for 5-10 minutes. 4. The preparation method according to claim 1, characterized in that 5-10% (v/w) dehydrated alcohol is added to the tomato seeds as an entrainer. 5. The preparation method according to claim 1, characterized in that the pressure of supercritical _CO2 extraction is 20-50MPa, the extraction temperature is 30-45°C, and the flow rate during supercritical _CO2 extraction is 10-30kg/h. 6. The preparation method as claimed in claim 1, characterized in that, the supercritical _CO2 extraction time is 1.0 to 3.0h and the obtained product is separated out, which is tomato seed oil.