Does anyone know the production process of peanut oil? Thank you so much!! 20

At present, there are two kinds of industrial production of peanut oil: "pressing method" and "leaching method".

The pressing method is to rely on physical pressure to separate the oil directly from the oil, cold pressing, hot pressing are all pressing methods, oil crops after heating the oil yield is high (just like fried peanuts are more fragrant), so the hot pressing method is a conventional practice in the industry; The leaching method is to use solvent oil (No. 6 light gasoline) to extract the oil raw materials at high temperature after full soaking, and process through the "six degreasing" process (i.e., degreasing, degumming, dehydration, decolorization, deodorization, deacidification) processing, the biggest feature is that the oil yield is high, the production cost is low, and the residues in the food pure inspection oil are inevitable, and the national standard stipulates that even if the qualified leaching oil is allowed to contain ten milligrams of solvent residues per kilogram.

The peanut edible oil production line is mainly composed of pretreatment equipment, oil extraction equipment, refining equipment and filling equipment, which is divided into hot-pressed peanut oil production line and cold-pressed peanut oil production line according to the production process.

Selected peanut kernels--cleaning and impurities--quenching and tempering--cold-pressing--cold-pressed crude oil--coarse filtration--filtration--crude oil.

Cold-pressed peanut oil equipment consists of: peanut shelling machine, cold-pressed screw oil press with feeding device, vacuum filtration, centrifugal oil purifier.

Raw materials - hulling - crushing - embryo pressing - steaming and frying - pressing - filtration - crude oil.

Hot pressed peanut oil equipment consists of: peanut shelling machine, drum wok, screw feeder, hot screw oil press, vacuum filtration, centrifugal oil purifier.

Peanut crude oil, deacidification, degumming, washing, drying, decolorization, deodorization, filling.

Select, roast, stir, squeeze, filter, SEEP, store" because the first letter of these five English words begins with 'S', so it is referred to as "5S".

There is also the leaching equipment process

Peanuts are high oil content, and the primary leaching process cannot be used at present. Fragrant peanut oil has a unique flavor and high nutritional value, and is favored by the majority of consumers. The National Standard of the People's Republic of China (GB8615-88) has detailed provisions on the quality standards of peanut oil.

1. The production process of fragrant peanut oil (pre-pressed part).

2 Process Description.

2 1 Cleaning: The same equipment used as ordinary secondary oil.

2 2 Grading: Use a grading sieve to separate immature grains, mildew grains, broken grains and other imperfect grains in peanuts, which can be used to produce secondary oil and sell them separately.

2 3 Drying Cooling: Drying equipment can be used with a hot air flow dryer. After drying, the moisture content of peanuts is controlled at 5% and 6%. Then quickly use cold air to reduce the temperature of the oil particles to below 40.

2 4 Crushing and peeling: The crusher can use a toothed roller crusher, the purpose is to remove the infrared clothing, and after crushing, the infrared clothing will be sucked out with a wind winnowing device or a suction flat screen, and the separated peanut red skin can be used as a pharmaceutical and chemical raw material.

2 5 Hot air frying: 25% of the total amount of 30% of the peanut petals is sent to the coal-fired hot air roasting oven, where the oil is heated to 180 200. The roasting temperature is the key factor for the aroma of peanut oil, and the temperature is too low, and the fragrance is weak. The temperature is too high, and the oil is easy to lake.

2 6 Cooling and gritting: In order to prevent gelatinization and spontaneous combustion of oil, heat should be dissipated and cooled quickly after roasting, and then rolled into crushed granules with a toothed roller crusher.

2 7 Steaming and stir-frying:"Use a five-layer vertical steaming wok to steam and fry the green billet. 1 layer 2 layers should be full, play the role of steaming; 3 layers and 5 layers should be shallow, which plays the role of removing moisture; The discharge temperature is 108 112, the moisture is 5% 7%, in order to ensure that the peanut oil has a strong fragrance, the indirect steam pressure of the steaming boiler should not be less.

2 8 oil press: this process uses 200 type screw oil press, taking into account the particularity of the production process of fragrant peanut oil, the spindle speed of the oil press has been appropriately adjusted, the spindle speed is increased from the original 8rpm to 10rpm, and the thickness of the thick cake is appropriately controlled, which is generally controlled at about 10mm. The pressing temperature is 135, the water is pressed, and the residual oil of the machine pressed cake is 9% 10%.

The obtained crude oil is precipitated and filtered with a vertical leaf filter and sent to the refining workshop, and the machine-pressed cake is crushed and sent to the leaching workshop for secondary leaching. The leached crude oil is refined and sold separately as ordinary oil.

There are two common processes for making peanut oil: pressing and leaching. Crushing is the method of obtaining peanut oil from peanuts by means of mechanical extrusion, while leaching is a method of obtaining peanut oil from peanut cake meal using the principle of solvent and oil dissolving each other.

Different peanut oil production processes and equipment used are different.

The process of producing peanut oil by pressing method includes two parts: peanut pretreatment and peanut pressing, if the processing volume is relatively small, it can only be pressed with an oil press. If you want to get better quality peanut oil after crushing, you can use peanut oil refining equipment for further processing.

The process of producing peanut oil by leaching method includes peanut pretreatment, peanut oil pre-pressing, and peanut oil leaching. The leached peanut oil needs to be processed with peanut oil refining equipment to remove impurities from the peanut oil, so as to obtain refined peanut oil that meets the standards.

It is important to note that pressed oil and leaching oil are just two different processes that produce oil, and there is no good or bad oil. In fact, peanut oil is good as long as it meets national standards. So, you can determine the peanut production process according to your needs or discuss it with an oil engineer.

Generally, peanut oil equipment manufacturers have oil engineers, and you can choose according to your needs.

Summary. Inquire: The detailed process of producing peanut oil:

Cleaning, crushing, rolling, steaming, pre-pressing, leaching and refining. According to statistics, China's annual peanut production is about 15 million tons, of which about 55% is used for food, 45% of peanuts are used for oil extraction, and China produces about 2502.8 million tons of peanut oil every year. Cold-pressed peanut oil, using selected high-quality peanuts as raw materials, eliminating aflatoxin from the source, pressing temperature below 60 (advanced technology can be less than 45 pressing), physical filtration process to produce peanut oil.

Inquire for you: the detailed process of producing peanut oil: cleaning, crushing, rolling, steaming and frying, pre-pressing, leaching and refining and refining.

According to statistics, China's annual peanut output is about 15 million tons, of which about 55% is used for food, 45% of peanuts are used for oil extraction, and China's fanzhi line produces about 2502.8 million tons of peanut oil every year. Cold-pressed peanut oil, using selected high-quality peanuts as raw materials, eliminating aflatoxin from the source, pressing temperature below 60 (advanced technology can be less than 45 pressing), physical filtration process to produce peanut oil.

Machinery and equipment required for the production of peanut oil.

Inquire for you: machinery and equipment required for the production of peanut oil: peanut shelling machine, wok, oil press, oil purifier, etc.

Analysis of factors influencing the flavor of peanut oil.

The main factors affecting the flavor of peanut oil are as follows:

1 The influence of peanut raw materials themselves.

The oil crops used to produce fragrant peanut oil require full grains and have not gone through the aging period. Immature grains, broken grains, mildew grains and aged grains cannot be used to produce fragrant peanut oil. The acid value of the oil produced by immature grains and aged grains is higher and the flavor is poorer, while the moldy grains and broken grains are easily contaminated by aflatoxins.

Therefore, during the production process, these oils must be separated for the processing of ordinary secondary oils separately.

2 The effect of the ratio of the size and the road.

The raw material (big road) and the hot air baking material (small road) are generally mastered according to 3:1. The proportion of baking material is too small, and the flavor of peanut oil is light; If the proportion is too large, it is difficult to form the cake during oil extraction, the oil yield is reduced, and the crude oil is turbid, which increases the difficulty of the subsequent process.

3 Effect of roasting temperature.

Hot air roasting is the key process of producing fragrant peanut oil, and the production of peanut oil flavor is directly related to the roasting temperature. The temperature is too low, and the fragrance is weak; If the temperature is too high, the oil is easy to burn. Generally, the roasting temperature is controlled by 180 200.

In order to prevent gelatinization and spontaneous combustion of oil, heat dissipation and cooling should be carried out immediately after roasting.

4 The impact of steaming and stir-frying.

Steaming and frying the green billet is another important part of the production of fragrant peanut oil. The oil yield, aroma and color, phospholipid and soluble content of peanut oil are directly related to steaming and frying. It is necessary to adopt high-moisture steaming technology, and adjust the oil moisture to 12% and 13% in the steaming wok; In the case of equipment pressure permitting, try to increase the pressure of indirect water vapor, generally controlled at; Enterprises with conditions are better to use superheated steam.

In the process of steaming and frying, it is necessary to make phospholipids and colloidal substances fully absorb water and condense and combine with proteins, which is the key to ensure that the refined oil 280 heating test is qualified and to improve the transparency of refined oil.

5 Several problems that should be paid attention to in the production of fragrant peanut oil.

The unique aroma of peanut oil has a lot to do with its unique production process. In order to maintain its natural color, aroma and taste, the aromatic biochemical oil is generally not hydrated, alkali refined, decolorized and deodorized. The raw materials of peanuts are also very examined, and fresh, full-grained high-quality peanut kernels must be selected.

Immature grains, damaged grains, mildew grains, and aged grains must not be used to produce fragrant peanut oil. In order to ensure that the quality of fragrant flower oil meets the requirements of GB, the following issues should also be noted:

It is extracted with an organic solvent and then evaporated with an organic solvent.

Peanut oil is the most familiar edible oil in our daily life, and it is also a more popular edible oil, this edible oil does not contain sufficient nutrition, it is a kind of oil made by peanut pressing, although many people know that peanut oil is made of peanuts, but the production process of Wang Gao body may not be understood, the following article will introduce it to you.

Filtering

To make high-quality peanut oil, so many raw materials peanuts must also be selected to be of high quality. This process is very important to do peanut oil screening. First, use a dustpan to dust out peanut shells, firewood, etc., and then use a round luo to sift away debris such as stones, soil chips, and iron.

It is required that the less impurities in the raw kernels after screening, the better, and the maximum is not exceeded.

Grinding

The peanut kernels can be crushed with stone mills, and the peanut kernels should not be spread too thick, so as not to roll unevenly, and the thickness of the green billet should be milled in millimeters. This process is also relatively particular and must be mastered.

Steamed billets

You can use an iron pot cage drawer, and after the water is boiled, the milled green body will be evenly spread on it. The SAIC should be uniform, and after steaming, it is required to see the oil in one twist, the moisture is around the right, and the temperature is more than 100.

Stacking

After steaming, the blank is the cooked billet, to quickly wrap the cake and stack, the cake can be used in a single circle, the upper and lower mouths of the cake ring should be aligned, the grass should be evenly paved, and the cooked billet should be compacted and flattened after being loaded, so that the middle is slightly higher. It is required that the bread should be fast and flat, and the loading should be correct and straight, so as to meet the requirements of maintaining the temperature of the cake and prolonging the pressing time.

First pass

This pressing process is very critical in the peanut oil squeezing, it needs to be done in place, the human screw press should be placed in the insulated room, the cake should be pressed immediately after it is loaded, and it should be pressed step by step.

Through the introduction of the peanut oil production process has a corresponding understanding, peanut oil production does take a lot of effort, need to master each key step, only do the above to be able to make high-quality peanut oil, if you want to make peanut oil, then you can refer to these steps to carry out.

The oil you press and leach out is called crude oil.

Crude oil and final cooking oil have the following characteristics compared to the final cooking oil:

Rich in water, in addition to making the oil light as a whole, it provides conditions for the rapid growth of microorganisms.

A variety of fat-soluble substances, including but not limited to free fatty acids, fat-soluble pigments, aldehydes, ketones and other organic substances, and even organophosphorus and heavy metals obtained by environmental pollution enrichment. None of these substances are beneficial to people or even carcinogenic.

Substances presented in a colloidal state, including phospholipids, proteins, polysaccharide particles. These substances make the color of crude oil turbid and dull, and some can decompose on the spot when encountering high temperatures, resulting in foam or black precipitation, and the color and flavor of the dishes are affected or even poisonous.

Sediment and other suspended sediment precipitate impurities, and it goes without saying whether this can be eaten or not.

Therefore, the refined oil must be refined.

Kiss, hello, the specific way to improve the quality of peanut pressed peanut oil: 1. Choose the best peanuts, do not choose those peanuts that have not been used all year round, and choose those fresh, full, dry socks and colored peanuts, these peanuts generally have a high oil content. 2. Before using these peanuts to extract oil, clean the bottom before the last oil extraction, especially some residues attached to the performance of the oil press.

3. During the operation, pay attention to the operation process and read the user manual and precautions. Do not operate without understanding.