Which is the best way to extract rapeseed oil?

According to the function, the oil press can be divided into screw oil press and hydraulic oil press.

1. Hydraulic oil press.

The hydraulic oil press is a traditional small oil press, and the production process is intermittent. The process is characterized by low operation technical requirements, high oil yield, and high crude oil, but the labor intensity is large. The applicable occasions of the hydraulic oil press are:

The processing capacity is small, the production is small, and the daily processing capacity of a single unit is about 1 ton.

2. Screw oil press.

The fully automatic screw press is an oil press that can operate continuously. The technical characteristics are: low operation technical requirements, high oil yield, poor crude oil quality compared with hydraulic oil press, and labor intensity lower than that of hydraulic oil press.

The automatic screw press is suitable for small processing capacity, small workshop production, and the daily processing capacity of a single machine is about 2-8 tons.

3.Large and medium-sized screw oil press units.

The screw oil press unit is suitable for large and medium-sized, continuous and large-capacity oil plants. The technical characteristics are: continuous production, low labor intensity, and high oil yield.

1. Production process of rapeseed oil extraction equipment:

1.Cold pressing process: rapeseed.

Clean and remove impurities, cold-pressed, cold-pressed crude oil, coarse filtration, refining, cold-pressed oil, rapeseed cake.

2.Hot pressing process: rapeseed, cleaning and impurities, steaming and frying, pressing out the oil, and precipitating.

refining camellia oil; The main equipment components: hoist.

Clean the sieve, steam the wok, the oil press, the filter, the crude oil temporary storage box, 2. Rapeseed oil.

Crude oil refining equipment production process.

Crude oil one alkali refining one degumming one decolorization one deodorization one dewaxing workshop (or refined oil workshop).

The main equipment consists of: refining tank, decolorization tank, deodorization tank, heat conduction oil furnace, filter, etc.

Third, rapeseed oil dewaxing equipment process.

In the processing of oils and fats, the inherent wax in the oils can be separated from the oils through the winterization dewaxing process, which can improve the nutritional value of the oils and fats and improve the taste and quality of the oils.

The main equipment consists of: freezer, filter, crystallization tank, refined oil tank, etc.

The cost of equipment is related to the capacity, configuration, and quality of refined oil requirements, which cannot be said in a word;

1. Peanut oil.

Peanut oil is light yellow and transparent, the color is clear, the smell is fragrant, the taste is delicious, and it is a relatively easy to digest edible oil. Peanut oil contains more than 80% unsaturated fatty acids, and also contains saturated fatty acids such as palmitic acid, stearic acid and eicosanic acid. In addition, the fatty acid composition of peanut oil is relatively reasonable and easy to be digested and absorbed by the human body.

2. Rapeseed oil.

Since the raw material for oil extraction is the seed fruit of plants, it generally contains a certain amount of seed phospholipids, which are very important for the development of blood vessels, nerves, and brains. Canola oil has little or no cholesterol and is safe for most people to consume.

Rapeseed oil is an oil with a particularly high content of erucic acid, whether it will cause myocardial fat deposition and damage to the heart is still controversial, and patients with coronary heart disease and hypertension should still pay attention to eating less.

3. Corn oil.

Corn oil is an oil extracted from corn germ and is rich in vitamin E, a natural antioxidant. Corn oil is golden and transparent in color, fragrant and fragrant, which is very suitable for quick cooking oil, which can not only maintain the color and aroma of vegetable dishes, but also do not lose nutritional value.

4. Sunflower oil.

Sunflower oil is a healthy edible oil known for its high content of linoleic acid, and the content of natural vitamin E is the highest among all major vegetable oils; Linoleic acid is an essential fatty acid for the human body, and its content can reach about 70%. Sunflower oil is rich in carotene, which is more than peanut oil, sesame oil and soybean oil. It also contains nutrients such as glucose and sucrose, and its calorific value is also higher than that of soybean oil, peanut oil, sesame oil, corn oil, etc., which is easy to be absorbed by the human body, and the absorption rate can reach more than 98%.

In addition, sunflower oil is light and transparent, can retain the natural food flavor when cooking, and after a little heating, it has a strong fragrance, and it is the best tasting edible oil except for sesame oil. It also has a high smoke point, which can avoid the harm of oil smoke to the human body. Because sunflower oil is rich in nutrients and has a variety of health care functions for the human body, it is reputed"High-grade nutritional oils"。

In fact, the way to extract rapeseed oil is physical oil extraction. This method should sound higher and more environmentally friendly.

Nutritionally speaking, cold-pressed oil is better than hot-pressed oil, and when hot-pressed, rapeseed undergoes high temperature in the wok, which damages the free ions in the rapeseed, and smells fragrant, but it does not taste as cold-pressed oil.

First, the preheating temperature of the oil press is raised to about 110-140 degrees, and then the screened rapeseed is poured into the drum wok, stir-fried over low heat until dark yellow, and the rapeseed is cooled to about 60 degrees, and then poured into the oil press for pressing. <>

It is good to use the traditional pressing method.

In real life, solvent leaching is also used after pressing.

Home-squeezed canola oil.

Good. Rapeseed oil, commonly known as rapeseed oil. It is a kind of edible oil squeezed from rapeseed. It is one of the main edible oils in China, mainly produced in the Yangtze River basin and the southwest and northwest, and its output ranks first in the world.

Nutrition facts. The main ingredients are oleic acid and linoleic acid.

Linolenic acid, tocopherol.

and rapinosterol, etc.

Production. 1.Cleaning:

Before washing, the rapeseed is placed in a bamboo basket, and the side-by-side mud (mud blocks) are broken up with your feet, and then sifted. Windmills are used to remove ash debris that is lighter than rapeseed. Then use a coarse and fine sieve to remove inclusions larger or smaller than rapeseed.

2.Stir-fried seeds: use a sandwich pot (you can also use two pots together), and the sandwich can be filled with grass ash or fine sand.

When you start frying, the heat can be slightly higher, and after about an hour, there is a cracking sound of rapeseed in the pot, that is, the heat should be controlled. 10 minutes before the rapeseed out of the pot to suppress the flame, when the temperature of the rapeseed in the pot reaches 115 to 120, the hand-twisted rapeseed is golden brown after crushing, it can be out of the pot. Stir-fry frequently.

3.Grinding: The grinding should be flattened, the grinding center should be adjusted, the material should be evenly distributed, the size of the seeds should be ground separately, and the whole seeds should not be produced during grinding.

Mill seeds should be diligent to sweep, the first billet will be slotted, add about 3% of the sieved coarse bran or about 2% of the 3 cm long grass core mix, the thickness of the extrusion does not exceed centimeters, mixed with the specified coarse bran or grass heart, you can directly steam the billet.

4.Steaming blank: The first blank is steamed for about 2 minutes, the green steam is steamed, and the second blank is steamed for 25 minutes.

When steaming, keep adding water to the pot to make up for the loss. The steam waist should not leak air, and the fire should be evenly added. A layer of brown should be added to the bottom of the retort, which can not only protect the bottom of the retort, but also not stick to the blank.

At this time, change the water in the steamer frequently.

5.Wrapping cakes and squeezing: the first road plays a double circle, the second road plays a single circle, disperses the cake, concentrates on squeezing, the cake should be fast, and the cake should be stepped on tightly. It is better to wrap the cake with loose grass.

6.Pressing: Beat lightly, beat frequently.

Make the cake quickly pressed, after the oil is lightly pressed, pressed frequently, after 1 hour, most of the oil is squeezed out, hit hard, slow beat, increase the pressure. The hitting rod should be flat and straight, and the upper and lower tips should be even. The first course is played for 3 hours, and the oil is 90%, and the second course is played for 4 hours, and the next morning is pressed.

To prevent cold wind, squeeze with a thermal insulation board or sack cover.

Directions for serving. 1. Oils and fats have a certain shelf life.

Do not consume oil that has been left out for too long.

2. Because there is some "green smell", it is not suitable for direct use in cold dishes.

3. Repeated use of oil after high temperature heating should be avoided.

4. High-quality rapeseed oil unsaturated fatty acids.

The oleic acid content in it is second only to olive oil, with an average content of about 61%. In addition, rapeseed oil contains the highest content of oleic acid and linoleic acid, which are beneficial to the human body. Experts believe that due to the strong recommendation of foreign grain merchants, there are many misunderstandings in the consumption of edible oil by urban and rural residents.

It must be the rapeseed oil that you fry at home. At the very least, it is certain that there is no other oil, it is pure rapeseed oil. The oil in the supermarket is processed by others, and no one can guarantee that it is pure.

It should be a qualified canola oil in the supermarket. Because modern processes can remove harmful impurities from crude oil. Some of the mildew in the self-pressed rapeseed cannot be cleaned up.

The better rapeseed oils are:

1. Rapeseed oil in oil:

The king of oil has introduced the international advanced rapeseed low-temperature pressing equipment, which has made the rapeseed oil produced in terms of nutrition, color and taste to a new level, and improved the quality of the product. At the same time, in order to ensure the quality of the product, the company's technical personnel also studied the quantitative analysis method of tea seed oil to avoid the purchase of adulterated rapeseed oil raw materials.

2. Double low rapeseed oil:

Rapeseed oil is an edible oil made from rape. Rapeseed oil refers to rapeseed varieties with erucic acid content of less than 3% and glucosinolate content of rapeseed cake less than 30 micromol grams. This variety not only creates favorable conditions for detoxification, but also significantly improves the beneficial nutrients of rapeseed oil, so rapeseed oil is considered to be a good edible vegetable oil.

3. Nine seasons of raw coriander oil:

Jiuji raw coriander seed oil is planted in Dabie Mountain 10,000 acres of camellia base, and a complete set of precision experiment, testing and inspection equipment has been purchased, and advanced oil refining and edible oil product development technology has been introduced. Now guided by the health of human edible oil, we strive to build a well-known brand of edible oil.

4. Jinding rapeseed oil:

Jinding rapeseed oil is an important carrier for the state to regulate the grain and oil market, and is currently one of the largest grain and oil enterprises in China. At the same time, it has a strategic layout of six major oil and oil production bases, with a series of high-level production and management systems, and every drop of oil contains responsibilities to consumers.

5. Menyuan rapeseed oil:

Menyuan rapeseed oil is rich in vitamin E and vitamin B, composed of 18 kinds of fatty acids, high content of oleic acid and linoleic acid, low content of erucic acid, no cholesterol, human absorption rate of up to 99%, suitable for the taste of the public, has a certain effect of softening blood vessels and delaying aging, and is the first choice for pollution-free, pure natural food and edible vegetable oil. On November 15, 2019, it was selected into the China Agricultural Brand Directory.

Generally speaking, rapeseed oil is the most fragrant pressed in your hometown, but there are actually more impurities in this kind, and it takes a long time to cook before stir-frying. It's not easy to buy now.

If you sell a brand outside, it is more common.

Arowana, carp brand (also owned by Arowana), Fulinmen, Luhua, Xiangmanyuan, etc., these brands can be bought in large supermarkets, and the 5L one is only a few dollars.

In terms of quality, these brands can be eaten with confidence.

Also, don't believe in what is non-GMO, the Ministry of Food has just issued a document prohibiting the promotion of what is non-GMO, don't spend money in vain.

To say weakly, I personally think that the carp brand is a little more cost-effective, hahaha.

The standard corresponding to each grade of rapeseed oil is different, and the first grade is the best. The refining degree of primary oil and secondary oil is relatively high, and it has gone through the processes of degumming, deacidification, decolorization, deodorization, etc., and has the characteristics of tasteless, light color, high smoke point, less fried vegetable fumes, and not easy to solidify at low temperature. After refining, the content of harmful components in the primary and secondary oils is low, such as glucosinosides in vegetable oil, which can be removed, but at the same time, a lot of nutrients are lost, such as carotene in soybean oil will be lost in the process of decolorization.

According to the edible oil grade processing technology, it is divided into two kinds of pressing and leaching, which represent physical pressing and chemical leaching, the oil yield of the physical method is relatively low, and the oil yield of leaching is high. Among them, the pressing is divided into small pressing, virginization, etc., virginization is similar to colostrum, so the nutritional content is better in all aspects, of course, it is also relatively expensive, and the small pressing is more popular, mainly referring to the oil squeezed by the small press for physical pressing, the oil yield is low, and there are more on the market.

According to the processing technology, it is divided into 1-4 grades, 1-4 grades do not actually represent the quality of the oil, he is only a representative of the degree of refining, grade 1 oil is more translucent, the degree of refining is high, more suitable for cold food, or catering does not color cooking methods, but its nutrients with the degree of refining, at the same time, the 4 grade oil is richer in flavor substances and darker in color, the nutrient retention is more comprehensive, and the degree of refining is relatively weak, so there is no need to worry about grade 1 or grade 4, choose according to your usual preferences or uses, As long as it meets the national standard, it is safe.

According to the brand, in fact, there are many brands on the market, and the regionality is also very strong, Arowana, Luhua, carp... There are too many, there is no difference in taste, you can choose, but recently I saw a kind of plateau small grain rapeseed oil in the supermarket, self-built planting base, produced in Qinghai Plateau pollution-free, small grain rapeseed, the taste is very fragrant, it seems to be Chang'an rapeseed oil, stir-fry is not bad, of course, there are many local brands, such as Hanzhong rapeseed oil, Jianxing, spring or something, now people pay more attention to eating better, less, so everyone pays more attention to quality and raw materials.

Yujin coriander rapeseed oil is good in various brands of rapeseed oil!! The quality is guaranteed, and the stir-fried dishes taste good. The service was exceptional! It's an emerging brand! I'm going to use this now! I recommend it to you.