Grape seed oil
Grape seed oil is a light oil in taste and even in smell. It is usually used to prepare sauces that are placed on salads, in addition to using it for quick frying that does not require high temperatures.
It is noteworthy that there are many benefits that can be obtained from this oil, the most prominent, protecting the circulatory system from the incidence of various diseases, and to treat the problems of different skin and preserve the youth, and in this article will show you how to prepare this oil.
Grape Seed Oil
There are three methods used to extract and manufacture grape seed oil, which we mention as follows:
Hydraulic pressure
Is one of the oldest methods used to extract natural vegetable oils, which is still used today, which is based on the principle of pressure without the use of any source of heat, but it is indicated that during the process of manufacturing and pressure may produce a quantity of heat, which may be very low percentages do not lead To spoil the vitamins and nutrients in the oil, and the process of pressure on the seeds oil filtered by sieve, to get rid of all the impurities called the “peat” and deposited in the bottom of the container.
One of the disadvantages of this technique is that a large proportion of the oil remains stuck in the pulp and dried out, so the amount of final oil is very low, but on the other hand, the amount of oil extracted is of high quality, because it retains the full nutritional value found in the seeds, Delicious taste and delicious aroma, making its price more expensive in the market.
Solenoid pressure
This method is similar to the previous method in terms of the use of the principle of pressure to extract oil, but it differs in that it produces a temperature higher than two hundred degrees, because of the exposure of seeds to a high degree of pressure, which will increase the amount of oil produced, And the oil in the oil is working to reduce it, in addition to that the oil is dark and dark, and smelly, and it is noteworthy that manufacturers resort to the process of refining oil to make it more clean, in addition to the use of chemicals to get rid of strong smell.
Dissolution
It is one of the most used methods today, as it gives a greater proportion of oil compared to the previous two methods, oil is extracted by exposing the seeds to steam, and then add an appropriate amount of solvents, which are usually of oil derivatives such as gasoline.
To remove these solvents, the oil is heated at a high temperature and then washed with caustic soda. The next step is to whiten the oil produced by adding some special chemicals. The following are the manufacturers to filter the oil produced from all the additives, Its foul smell.
One of the drawbacks of this method is that the quality of the resulting oil is few, and it may be harmful to human health, because of the retention of quantities of toxic chemicals in the oil, which can cause the incidence of malignant tumors and other diseases.