If you grow rape at home, if you sell rape directly for 2 yuan a catty. If oil is used, the yield of a catty of rapeseed is between 4 Liang and 4 Liang 5. If you don't want rapeseed cake, you can give it to the processor, free of processing fee, and the processor will make up the difference of 20 cents a catty (according to the weight of rapeseed) to the customer. If you want rapeseed cake. The processing cost is 50 cents a catty, but the rapeseed cake itself can be sold to 1.5 yuan a catty. After all, pure pressed rapeseed oil is much cheaper than soybean oil bought by Arowana.
Most large-scale edible oil enterprises directly import soybean crude oil (genetically modified) from abroad, and then refine it to remove impurities to make finished edible oil, from which they can obtain the difference profit, without squeezing, saving a lot of equipment and workshop space, with less investment and quick results. In other words, it is processed with soybean raw materials. Now there is a leaching process, that is, soybeans are soaked in gasoline without squeezing, and the gasoline leachate is heated after the soybean oil is dissolved, and the gasoline is volatilized and recovered. The oil yield of leaching method is higher than that of squeezing method. Defatted soybeans are made into soy sauce, tofu and other bean products, and also used as feed fertilizer.
Ten kilograms of soybeans need 3-3 kilograms to 3.5 kilograms of oil, two and a half kilograms to three kilograms of rapeseed need one kilogram of oil, and two kilograms of sesame need more than one kilogram of oil. In our hometown, rapeseed, tea seeds and camellia oleifera seeds are all processed in the oil mill, so we know the oil yield.
Some misunderstandings about genetically modified soybeans in popular science;
First, it is no exaggeration to say that 98% of the soybean oil you can buy is soybean oil squeezed from genetically modified soybeans. Domestic non-GM soybeans are used to make bean products, and some of them are exported to squeeze soybean oil. Because of the low oil yield, the price of non-GM soybeans is much more expensive than that of imported GM soybeans. It is not cost-effective to squeeze soybean oil, and few people buy it.
Second, the state stipulates that genetically modified soybeans cannot be eaten directly, but can only be used for oil extraction and as feed (that is, soybean meal after oil extraction), so you can't buy retail genetically modified soybeans internationally, so you don't have to worry about buying genetically modified soybeans.
Third, the genetically modified ingredients of genetically modified soybeans are in protein. Because the squeezed oil does not contain soy protein, the transgenic soybean oil does not contain transgenic ingredients.
Fourth, who says Americans don't eat genetically modified soybean oil? The annual output of genetically modified soybeans in the United States is 654.38+005 billion ~ 654.38+023 billion tons, and the annual export is about 54 million tons. Didn't all the other soybeans fall? Like China, the United States does not allow genetically modified soybeans to be directly made into bean products, but it also eats genetically modified soybean oil and feeds soybean meal to livestock.
Domestic soybeans are oil-squeezed, while genetically modified soybeans are oil-squeezed, that is, soaked in kerosene. The oil yield of transgenic soybean oil is 10% higher than that of domestic soybean oil, and the price is much cheaper. Of course, oil is cheap! But I don't eat soybean oil. I haven't bought soybean oil since I learned about genetic modification in 2003, and I won't buy blended oil when I see it.
Soybean oil sold in supermarkets and grain and oil stores is definitely not authentic soybean oil. Everyone knows the oil yield and soybean price, the cost and salary of factory processing equipment, transportation expenses, the profit of supermarket grain and oil stores, packaging and so on. Can I buy a barrel of oil in 40 yuan with 5L and 0.25L in this way?
The oil yield of domestic soybeans does not exceed 13%, and the oil yield of imported genetically modified soybeans is 24%. Chemical leaching oil, refining and then adding chemical raw materials. Such oil is genetically modified soybean oil first, followed by chemical residues. Oil plants will buy some genetically modified products when purchasing non-genetically modified soybean raw materials. Why can it be understood as imaginable? It is really difficult to distinguish whether refined oil is converted into conventional units, so there is a self-deceiving apology. There are two basic methods to extract oil, namely, squeezing method and leaching method. Extrusion is more intuitive. Most people know that there are useful chemical components involved in leaching and residue, which is called refining.
There is almost no difference between transgenic and non-transgenic nutrition, and there is no difference in taste. You can try it yourself, find three chefs and provide two bottles of exactly the same oil, genetically modified and non-genetically modified, but don't tell the chefs which ones are non-genetically modified and which ones are genetically modified. Then let the chef and fry five dishes with two kinds of oil respectively, and then find 50 people to try, to ensure that no one can tell which is non-genetically modified and which is genetically modified.
American soybeans and South American soybeans imported from China are genetically modified soybeans with excellent quality, low price and high oil yield. These soybeans are in directional circulation. For example, large enterprises such as Yihai Kerry and COFCO squeeze a lot of imported soybeans every year, which ordinary consumers can't buy. The squeezed products of soybean are soybean oil and soybean meal, so the price of soybean oil is not only determined by the price of soybean. For example, if the price of live pigs rises, soybean meal will be more expensive and soybean meal will be relatively cheaper.
On the other hand, if the price of live pigs falls, it will be quite oily and suppress the meal. Compared with imported soybeans, northeast soybeans have low output, low oil yield and high price, which can only meet 20% of domestic demand, and the remaining 80% needs to be imported. The oil yield of soybean extrusion is above 15%, and the highest can reach 20%. If leaching method is adopted, the oil yield will be higher. Most edible oil manufacturers buy futures soybeans, which are large in quantity and relatively low in price. 5 liters of genetically modified soybean oil in the supermarket generally costs 39? Between 49 yuan and 79 yuan, non-GMO soybean oil is rarely eaten by ordinary families because of its beany smell, and most of it is supplied to catering institutions. Several well-known brands rarely put soybean oil on the shelves, and there are few varieties.
It can produce 200-250 kilograms of soybeans per mu, and the oil yield is about 13%. Each person consumes 50 kilograms a year, and each person needs 1 mu to grow soybeans and feed chickens, ducks and pigs. Therefore, there is little land in the south, which is not suitable for building big cities. The land in the south can only be supplied by the countryside itself, and the urban population in the south can only rely on imports to maintain food and drink. In addition, rice and corn in Northeast China are in Liaoning Province.
At present, most of them are made by leaching, and few are really squeezed. The processing method is marked on the oil drum. Oil is actually a by-product of oil plants, mainly a large number of bean cakes and soybean meal, which are important components of various feeds and have considerable prices. Because the remaining waste from oil pressing can still be sold to farms, the price is not very cheap, and now blended oil and soybean oil are basically genetically modified beans, with high yield, strong insect resistance and disaster resistance, and low cost.
At present, soybean oil is soaked with chemicals, and the oil yield is high. The bean dregs after oil pressing are processed into bean strips (similar to bean cakes). As the original feed for pigs and chickens, the price is very high, which is higher than that of soybeans. Beans can basically return to the original cost, and soybean oil is the profit of the manufacturer.
Soybean oil is cheap, another important reason is that the by-product of soybean oil squeezing is soybean meal, which is an important raw material for producing feed and can also sell the price of soybeans, such as peanuts, sesame seeds and sunflower seeds. Although the oil yield is higher than that of soybean, the by-products are basically used as fertilizers with low value, so soybean oil in supermarkets is cheap, which is the main reason.
Non-GMO oil is not necessarily non-GMO. Non-genetically modified soybeans have low oil yield, and if oil plants don't collect them, farmers will plant less and the price will be higher. Typing those words more is to sell more money. At present, oil is extracted by leaching method. Try to buy light oil. No matter what kind of oil it is, it has been decolored and deacidified, and there will be less residue of substances that are not good for the body. The better the thermal stability.
After soybean oil is squeezed or leached, there are by-products Generally, the highest oil yield of transgenic soybeans can reach 18%, and then there is soybean meal, which can be used as feed and soy sauce. This can be sold. Oil residue can be made into soap particles, and protein powder can also extract soybean meal. After soybeans can be squeezed, there can be many by-products. These are the values produced by soybeans, not just oil prices.