Nobody would have objected, probably, to fry their cutlets in their butter.
Personally, the properties of the oil itself (for example, the fatty acid composition) are more important to me than whether I squeezed the oil myself or bought it in a store.
Fats in oils are saturated (all bonds between carbon atoms are single), monounsaturated (there is one double bond, which is unstable) and polyunsaturated (many double bonds). Usually, one oil or another contains all types of fatty acids and we are more interested in knowing the percentage of each class.
Saturated fats are the most stable (often solid at room temperature), monounsaturated fats are less stable, and polyunsaturated fats are the most unstable of them all. If we consider these data from the point of view of frying (exposure of oils to high temperatures), then the best oils for frying (that is, they will make food the least carcinogenic to humans) will be those in which the largest part will be saturated fat. Oils with a high content of monounsaturated fatty acids will be noticeably worse, and oils with a high content of polyunsaturated fatty acids will be quite bad.
As an example, let's take sunflower oil, see, for example, Wikipedia:
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Wikipedia's data comes from the USDA Nutrient database, which can be considered a reliable source of information and gives us:
- saturated 10.1 g
- monounsaturated 45.4 g
- polyunsaturated 40.1 g
That is, a fairly large part of the fatty acids in sunflower oil will be polyunsaturated (in this particular case, linoleic fatty acid, which belongs to the ω-6 class), as a result of which, if we fry in this oil, then it is quite easy to deteriorate and turns into a carcinogen, regardless of whether it is refined or not, purchased or we just squeezed it out ourselves.
I personally use olive oil for frying (most of the oil contains monounsaturated fatty acids), coconut and cocoa butter. At the same time, the last two are noticeably better than olive, since most of them are represented by saturated fatty acids. But it is certainly best not to fry or fry at all without adding oil.
So far, I see only the path of calcination, settling, and freezing that is really accessible. Something in Runet is completely sad about this, that is, not enough.
In my recipe, I tried to describe, among other things, oil filtration:
The point is, if you understand the basic principles, it is not difficult and not costly. I tried to sediment the oil and filter: my sedimentation never gave the quality that I get by filtration.
Perhaps the game is not worth the candle, and it is easier and cheaper to buy good imported refined olive oil, and not powder your brains.
It's up to you to decide. For example, on my oil press I make linseed oil and chia oil, which is used this way or added to salads.Hemp oil is very pleasing and is used for exactly the same things. Sometimes I make cocoa butter, which turned out to be just a great option for frying (in my opinion, it is better than coconut butter, only it comes out expensive). Flaxseed oil contains quite a lot of polyunsaturated fatty acids and few of its antioxidants (preservatives), as a result of which it goes rancid very easily and it is simply physically impossible to buy it in good quality stores (for any money): this was the reason to make this oil yourself.
At the same time, I buy unrefined olive oil in stores (I see that it is more expensive and the production date is as close as possible, no more than half a year), for frying and sometimes coconut oil for frying (but it gives its taste / aroma to the finished product, which I don't like it) and for technical purposes, such as lubricating the thread in the grinder or the axes of the melange.
I try to fry in oil as little as possible, so even the most expensive olive oil does not cost much, since a bottle costs quite a long time, in addition, it is not very whimsical to store (which allows you to buy it of good quality).
you can lightly fry the grain-seeds, then the oil will turn out with a different taste
It depends very much on the specific oil. For example, cocoa butter is very stable and roasting the cocoa beans does not spoil this butter, while roasting flaxseeds is guaranteed to produce rancid butter.
you can ignite the finished oil in a pot on a fire and then cool
Again, the same thing: this can be done with a fairly limited list of oils. Moreover, the healthier the oil is in its raw state (it contains more polyunsaturated fatty acids, which easily "neutralize" free radicals), the more detrimental it will be heat treatment.
It's just a pity to waste flaxseed for these purposes
Personally, I really do not recommend frying in linseed oil: it will be very poisonous when heated.
full of such oil presses and different companies, one in one design
Because they are made in China and from Lequip there is only an emblem (OEM production). For example, I also saw it here under the name Rommelsbacher OP 700.
As for me, it is desirable that Korea was listed as a manufacturer - there is a plate on the side of the device
Can you give a photo of the nameplate?
It's just that the Lequip LOP-G3 oil press is not produced at the Lequip plant in Korea, for this reason, the device itself cannot be written that it was made in Korea.
Tatyan, the principle of operation is the same for all oil presses. So is the design.
Yes, in the first approximation it is.
Well, somewhere on the side is an oil sump, somewhere in the front, some kind of press made of stainless steel, some kind of plastic. One has a round shape, the other is broken. that's all the difference. On the end result is definitely not affected.
But with this I can no longer agree. Roughly speaking, a screw oil press consists of a gear motor, an auger and a squeezing basket (zer) and a heater for this squeezing basket. And each of these elements is important and affects both the operation of the oil press and the final result.
For example, a motor can be a collector motor (as in Lequip LOP-G3), which is small, light, cheap, but noisy and has a short resource before replacing brushes (if they change at all): from the strength of 300-500 motorcycle hours, or maybe asynchronous: it is large, heavy, expensive, quiet and has a huge motorcycle resource (thousands of hours). The reducer can be with plastic gears, and can be with steel, and can be with steel oblique. The geared motor may have enough moment to "eat" all types of crops without any problems, or it may not be enough. Cooling can be such that the geared motor can work for an hour before overheating, or it can work for days, etc.
Everything depends even more on the design of the auger and the squeezing basket: which products and with what efficiency and quality (not to be confused with efficiency) can be squeezed out.Moreover, in "adult" oil presses, the outlet slit can be adjusted, thereby changing the pressure with which the oil press acts on the products and the efficiency and quality of the oil. In my oil press, this gap can also be changed, but by placing washers, which is not very convenient. And with Lequip LOP-G3 we can't change anything at all.
A lot also depends on the design and parameters of the heating element, and there can be big differences: the attachment for the Sana horizontal screw juicer has no heating element at all, my Chinese oil press has a heating element that has a fixed temperature of about 200 ° C, but I can it can be turned on / off, the ravmid oil press has a heating temperature controller, and the Lequip LOP-G3 has a heating element controlled by the oil press itself and the user cannot influence it at all. And, for example, I really really need control over this element, since to obtain maximum quality from different crops, completely different pressing conditions are required: I squeeze linseed oil without including external heating, while for squeezing cocoa butter I need it as a preheating , and the work of heating during oil extraction.
And there are many more nuances that more or less affect both the operation of the oil press and the result.