How many years can rape planted in rural areas be preserved after oil pressing?

In many rural areas, people like to grow their own rape. When rape blossoms and bears seeds, it can be put away, dried and pressed for oil, and kept for eating at ordinary times. And that rapeseed oil can be preserved for several years without deterioration? This kind of rapeseed oil is also available at home. Mom usually keeps it for one year, not more than two years. In fact, according to the situation at that time, it can be maintained for more than two years. Why? Mainly because my mother has undergone some treatment and kept it well.

Our family has little land, and we don't grow much rapeseed, and we usually plant rice in the field after harvest in autumn, which can grow almost one acre. By next April, we can harvest rapeseed in the field and then come back to dry it and extract oil. Oil extraction is to take it to the special oil mill on our street to extract oil, and people just charge a little processing fee.

Squeeze rapeseed oil. We don't have direct food. Instead, we do this: mom washes the big iron pot at home, cooks it thoroughly with fire, and then pours rapeseed oil into a small fire and slowly boils it; Because it is freshly squeezed rapeseed oil, it has a certain amount of water and is regarded as raw oil. It is difficult to preserve, easy to break, and needs to be heated and boiled with fire to preserve.

When you put rapeseed oil into the pot, you will slowly see quite a few bubbles coming out of the pot. After boiling for a short time, those bubbles will gradually disappear. If there are no bubbles in the rapeseed oil in the pot, you don't need to cook it. Let it cool. You can put it in a clean jar and seal it.

There is not much rapeseed oil at home. Usually we eat lard, so we make oil buns, white buns or sometimes fried fish for some festivals. The pot containing the rapeseed oil that has survived is placed in the wooden cabinet, with bagged rice next to it. The room in the cabinet is ventilated and the windows are not closed.

Moreover, every time my mother pours out rapeseed oil, if she doesn't use it up, it is also used for cooking, not pouring it back into the pot. The rapeseed oil in the pot is boiled in the pot, sterilized at high temperature, put in a clean pot and covered tightly, which can be preserved for a long time.

There was a small pot left for my mother for two years, but it was too long. Later, my mother also used it for cooking, and the steamed buns were all cooked with newly-cooked rapeseed oil or peanut oil. At that time, I didn't feel any peculiar smell when cooking with rapeseed oil. It still smells good.

It is not surprising that rapeseed oil that survived in this way can be preserved for a long time. Just like the Chili oil that is often cooked by ourselves in rural areas, it will not go bad in two or three years, and the principle is the same.

Originally, I wanted to take some home, but I think my parents are used to eating rapeseed oil and lard. The remaining 70 kilograms were all given to my parents. At that time, I also casually whispered that there were dozens of pounds of lard and tea oil at home. Can you finish this much oil? As soon as my mother heard this, she told me that these rapeseed oil and camellia oil were all grown at home without additives. As long as it is preserved, it will not be broken for two or three years. Because of the rapeseed oil that my mother gave me before, my daughter-in-law and children all said that cooking tastes delicious. It has been left for more than a year, and it hasn't gone bad after taking it out!

This is really true. Like before, there were many kinds of rapeseed at home, and there were hundreds of kilograms of rapeseed oil a year. In addition, pigs were raised at that time, and pigs were killed during the New Year, so lard could be added. Therefore, tea seed oil, lard and soil tea oil are mixed all year round. You don't have to buy cooking oil for one year, and sometimes you can't finish eating oil until the next year.

Some people say that rapeseed oil cooking has a taste and the oil smoke is relatively large. This is also understandable, because the ignition point of rapeseed oil is relatively low, and it will smoke as long as it is heated slightly. The reason for smoking is that the purity of rapeseed oil squeezed in rural areas is not high and there are many impurities. This situation is inevitable, because the machines in rural oil mills are relatively simple and there is no purification technology. So there are some impurities in the oil, which will smoke when heated slightly.

Just like my mother's practice, it is based on the principle of taking more from less. Rapeseed oil is not taken much at a time, and then poured into the pot, and the raw oil is heated to become mature oil. Then pour the cooked oil into the oil pan. The oil with impurities at the bottom is generally eaten by poultry. Therefore, this can effectively avoid the problem that rapeseed oil has peculiar smell and large oil fume.

How many years can rape planted in rural areas be preserved after oil pressing? My hometown and countryside mainly eat tea oil. Every year before and after the first frost and solar terms, we will pick tea seeds to extract oil. Rapeseed oil and tea seed oil are both very nutritious vegetable oils, which are very popular among our farmers.

To tell the truth, the process of oil extraction in the oil mill is really unsanitary. According to my mother, we first put the tea seeds into the machine and crush them, and then put them into the pot for steaming. After steaming, we put them in the ground with straw and then step on them with our feet. After stepping into a cake, put it into a machine to extract oil, and squeeze out the oil in the tea seeds, so that the tea cake can be reused. Many people like to wash their hair with tea cakes.

Now the process of making oil in the oil mill is much cleaner than before. Rapeseed oil and tea oil are both bulk oils. Farmers have at least 100 kilograms of bulk oil at home, and some farmers still have hundreds of kilograms of bulk oil at home. Although oil is a consumable, it will be inexhaustible because of a large amount of oil for a period of time. How should we store these natural vegetable oils? Moreover, how long can these natural vegetable oils be preserved without preservatives?

Bulk oil storage must be completely sealed. Don't let air enter the polluted oil. Contaminated oil will deteriorate the oil and shorten the shelf life. These bulk oils should be stored in a cool place at room temperature. Moreover, we have to divide the oil into two batches, one for short-term use and the other for long-term storage. And pay attention to the amount stored separately and how much oil will be used in a short time. It is best to pack these oils in small-capacity bottles and cans, so as not to cause secondary pollution to the oil because of frequent opening.

Under normal circumstances, bulk oil in rural areas can be preserved for one and a half to two years. This storage time can only be maintained for such a long time under normal storage conditions. Bulk oil containing more water or air should be eaten in time, otherwise the oil will deteriorate and smell strange after being left for a long time, and such oil can no longer be eaten.

Rapeseed planted in rural areas will be quickly dried and stored after harvest, and will generally be processed in an oil press in July. We all use old-fashioned clay pots to fill oil. Now every household needs 200-300 Jin of oil, which is almost enough for one year. I just ate it before, and I didn't think it would go bad, because the taste of rapeseed oil has always been there. I have always admired such a golden, buttery liquid, which nourishes everyone's life.

Then, how long can rapeseed oil squeezed in rural areas be preserved without deterioration?

In fact, ordinary people, such as me, have never studied how long rapeseed oil squeezed by rural people can be preserved. There is too little in the past, and I am afraid I will eat it before I eat it. Since production, there have been more rapeseed and more oil. Not only eat it yourself, but also send it to relatives and friends. Everyone likes it very much, so it's a treasure. Naturally, the baby has never heard of shelf life and deterioration. If you go to the countryside and ask your aunt, you will definitely say that it will be put casually, and it will not be bad if it is put for a long time. Because their older generation is more frugal, it will be said that it is not bad if it is broken (deteriorated). Besides, the oil smells normal (judging by smell). Nobody believed you when you said the oil was cut off.

However, now that I am full, I always want to improve my quality of life. The first thing to do is to pay great attention to the shelf life of food. So I consulted many people who know the shelf life of food better, and I was cautious about their opinions.

First of all, they mentioned the cooking oil processed by themselves in the countryside. Because of the simple equipment, the impurity content in oil is quite large, and there is no quantitative standard for water content, and these two media will shorten the deterioration process of edible oil.

Followed by cooking oil processed by rural people themselves. Generally, the utensils stored are random, and some empty barrels of industrial raw materials may be used, which are often toxic and not suitable for storing edible oil, which will cause edible oil to deteriorate. It is best to use a small pot and a big belly and store it in a dry and cool place.

Finally, most of the edible oils processed in rural areas are covered with things at will after being packed, and there is no seal, which exposes the oil to oxygen, accelerates the process of oxidation and rancidity, and easily allows various impurities to enter the oil.

Therefore, it is best to seal the rapeseed oil squeezed by farmers themselves, which is really not enough. Try to cover it with a lid to prevent impurity air from entering easily. And the storage period should not be too long, generally not more than one year. Of course, it is best to eat fresh. If the conditions are limited, it is best to shorten the shelf life.

I remember when I was in junior high school, my political teacher's father died of illness. What disease? Let me sell it first. My teacher's father is very close to my family and has always been in good health. At that time, no one thought that he would die suddenly, only in his 60 s, and now his 60 s is not how old he is. He died of acute liver cancer.

Later, many years later, when I first mentioned this matter, my teacher told me that it was because of the oil, because he ate up all the old oil of 1-2 years. So I have acute liver cancer.

I think it's only three to six months. For the sake of health, it should not exceed 6 months at most. Because self-squeezed oil can be stored for a long time under the condition of good storage, but how to store it is also a science. I don't think everyone understands this science. To be on the safe side, shortening the shelf life is the safest way.

As we all know, the shelf life of blended oil on the market is generally 18 months, but you should know that this is what the market needs. Food additives are added to general foods for preservation. However, the sealed blending oil is generally unchanged for up to 3 months.

Think about it, the blended oil with preservatives can only be stored for 3 months, and the self-squeezed oil has not been treated. Can it be kept longer?

So, today, I want to advise farmers that although frugality is our traditional virtue, our life is better now than before. Health is the most important thing, and a healthy diet is essential. Keep some self-squeezed oil and sell more. Although the cooking is good, although the food is safe. For the sake of health, don't stay too long, don't stay too long.

Rapeseed oil can be preserved for one and a half years if it is kept in a cool and sunless place, dry and not wet.

But in rural areas, we used to eat oil within two years. I remember that my husband specially checked the relevant information because of the bad habit of the old people in rural areas to eat oil, and then told his mother-in-law about the disadvantages of eating rapeseed oil after its shelf life.

In the first few years of marriage, after we squeezed rapeseed oil every year, the precipitation and purification were very good. We put clean oil in a clean container, then seal it and put it away. Why did you put it away? Don't eat until you finish eating last year's oil, so when you finish eating the old oil and just start eating new oil, the latest rapeseed oil is squeezed out again.

So year after year, we eat old oil year after year and don't eat new rapeseed oil year after year. So my husband looked up information one day and said to his mother-in-law: I don't know what you old farmers think. If you eat old oil every year, you don't know that old oil is harmful to people's health.

Rapeseed oil can be stored for one and a half years at room temperature. If we eat expired rapeseed oil, it will do serious harm to our health, especially to our stomach.

Rapeseed oil smells. If it is not heated, cold dishes will have a "green and spicy taste", so it is not suitable for cold dishes.

When you eat oil in your daily life, you should change oil every once in a while, such as peanut oil, corn germ oil, animal fat oil and sunflower seed oil. We can't always eat one kind of oil, such as rapeseed oil, which contains erucic acid. When we eat a lot of rapeseed oil, because of the high erucic acid content, it will lead to myocardial lesions.

It is suggested that rural families should not eat rapeseed oil beyond the shelf life, nor should they eat rapeseed oil excessively. For everyone's health, please choose the right way to use oil.

At present, our family basically eats enough vegetable oil, and seldom eats oil such as lard. Vegetable oil is rich in nutrition, pure in taste and storable. Every year, my family will plant oil and extract oil from B. After the rapeseed is dried and stored, people from the oil mill will check the oil extraction of rapeseed. Before oil pressing, rapeseed is generally fried to remove the aroma and increase the oil yield. Combined with the oil production experience in recent years, the oil production rate of incoming oil is about 30% and 33%, and few people exceed this upper limit. For the storage of vegetable oil, if it is a ceramic storage tool, it is no problem to put it for two or three years, but if it is a rubber product, the shelf life is not so long, up to one and a half years. Every year, in addition to eating B's oil, my mother-in-law will also send some to relatives or sell them to people in the same village. I once suggested that my in-laws sell their agricultural products through the internet, such as sausages, bacon, eggs, starch and vegetable oil, which can all be sold online. But because they are unfamiliar with the Internet and unequal to me, this matter can only be communicated with them slowly. The most important thing is that I don't know anything about online stores, so I can only put them on hold at present. To tell the truth, it is better to preserve rapeseed than rapeseed. Rapeseed can be stored for four or five years or even longer as long as it is dried and sealed, and the squeezed oil tastes exactly the same as the oil squeezed from the newly harvested rapeseed.

How many years can rape in rural areas be preserved after oil pressing? In view of this problem, let's talk about our local actual situation first.

I believe that friends who have lived in the countryside know that it smells delicious, and you can smell the fragrance of pure rapeseed oil hundreds of meters away when cooking. When I was a child, I knew who was cooking at home as soon as I smelled vegetable oil. In rural areas, rape is generally extracted by itself for the use of edible oil at home. However, we will not use all the harvested rapeseed to extract oil at one time, or extract oil several times, or sell the remaining rapeseed. Because we will arrange the oil extraction plan according to the oil consumption at home, for example, your family uses a barrel of oil a month, then your oil consumption will not exceed 10 tong at most, because we still have the habit of eating lard, and we will not eat rapeseed oil every day all year round.

In rural areas, we plant rape to extract oil almost every year. So this is a recycling process. For example, a friend who answered the question said that hundreds of pounds of rapeseed oil would be put at home. I really doubt whether they really live in the countryside. Because there is no such thing as "the more rapeseed oil is preserved, the more fragrant it is" in rural areas. Therefore, in rural areas, it is not clear how long rapeseed oil can be preserved without deterioration.

So how long can the self-pressed rapeseed oil in rural areas be preserved? Secondly, I checked the information and network, and got an answer: rapeseed oil can be stored for 18 months, that is, one and a half years, if it is dried, sealed, protected from light and placed in a cool place. Although the shelf life is one and a half years, how many rural families will leave rapeseed oil for so long?

In the past, the output of various crops was low, and there were not many responsible fields here. When we plant one or two acres of rape, there is not much oil, especially during the Dragon Boat Festival every year. Maybe there won't be more than a few pounds of oil left in the end Therefore, if you want to have oil to eat, you should put less oil in every meal, so basically the oil planted in that year was not enough for a family to eat for a year, and you had to rely on the oil and lard squeezed from tea seeds on the mountain for a year.

Rapeseed oil has a shelf life. Generally, the shelf life of rapeseed oil we buy in the supermarket is about 18 months. For example, the oil extracted from rapeseed planted in rural areas has a longer shelf life and does not add any additives. It is generally no problem to put this oil in a cool and dry place for 2 years.

However, even if it can be preserved for two years, few people in rural areas will keep the oil for that long. Because the rape planted in the first rural area itself does not extract much oil, it usually gets 100 kilograms of oil in good years; Sometimes when the years are short, there are only a few tens of kilograms of oil, which is just enough for a family to eat for a year, and sometimes it is not enough. How can it be stored for so long? Secondly, generally speaking, in a good year, the oil will not be squeezed out at one time, only about 50 to 100 kg of oil will be squeezed out at one time, and the rest will not be squeezed out until after the Mid-Autumn Festival. At this time, the oil cake obtained by oil pressing can be used as fertilizer for planting winter crops.

It is best not to store the oil squeezed at home for more than two years, that is, the oil that has been put at home for more than one year will appear a bit turbid, and it is best not to eat the oil that has been squeezed for more than two years.

Rapeseed oil is still quite common in rural areas. At least, after rape blossoms in winter, rape blossoms can be used to extract oil. To say that rapeseed oil can be preserved for several years, it mainly depends on the preservation method.

Old farmers will plant rape flowers here, so rapeseed oil is very common. Of course, not all families grow oil. After all, this cost is not cost-effective, and more people still eat it themselves. For example, the rapeseed planted by the old farmer is a few kilograms of oil squeezed out a year. It is definitely not good to sell them. They are all eaten by themselves or for others.

The long-term preservation of rapeseed oil is related to the preservation method, so it is impossible to preserve it for a long time. But generally speaking, if it is properly preserved, there will be no problems in a year or two, and it can still be eaten.

For example, my family's preservation methods are all filled with narrow pottery bottles left by our ancestors, and the bottle mouth is still stuffed with cork, so it can be said that the sealing is still very good. Just store these rapeseed oils in a cool and ventilated place. Don't put them directly on the ground. It can be padded with wooden boards, which is better. Anyway, that's what the old farmer did. He took it down for two years.

Of course, many people don't have that narrow bottle now. In fact, you can also use high-tech plastic bottles. For example, the peanut oil bottle we eat now is sealed inside. It can be said that this kind of packaging bottle can also be used.

If it doesn't work, use the plastic white bottle used in the village to make wine, which has a plug in it and can keep rapeseed oil well. Preserved like this can be preserved for more than one year without deterioration.

Of course, rapeseed oil may deteriorate in half a year if it is not properly preserved. For example, if it is exposed to the sun and sealed badly, it will go bad quickly. Don't eat it for a long time, it's really dangerous.

Rapeseed oil is of little use to ordinary people now. It is recommended to buy less. Too much rapeseed oil will only go bad and can't be eaten. Don't eat rapeseed oil that has been used for too long.