Reporter investigation found that the oil press has entered many families. The selling points of online home oil press are "no addition", "fresh and healthy", "old taste", etc. the prices range from 1000 yuan to 2000 yuan. Nearly 20 kinds of oil plants, such as sesame, walnut, rapeseed, peanut, soybean, tea seed, can be squeezed, and the operation is very simple. In a farmer's market near 38 square, an oil stall selling now is doing very well“ I don't think it's safe to squeeze the oil now. At least I saw how it came out. It's definitely not gutter oil, and I didn't add anything. " A sixty year old man said.
However, food experts warned that self extracting oil also has potential safety hazards. Nong Shaozhuang, a professor of Food College of Dalian University of technology, pointed out that raw materials such as peanuts and sunflower seeds are easy to be contaminated and deteriorated. If they are moldy, they will contain high-strength carcinogen aflatoxin, which also has safety problems. So choosing the right material is the key. The second is to operate according to the instructions of the oil press. After each use, the oil press should be cleaned carefully and maintained frequently to avoid raw material residue or oil residue in the machine, which will affect the quality of the next oil press. Third, it's best to squeeze as much as you need. Because there is no "refining" link in the self pressed oil, some substances with low ignition point can not be filtered out, with high relative impurities, short shelf life and easy oxidation and deterioration. Therefore, the amount of self pressed oil should be controlled well, and it is recommended to store it in dark glass bottles and eat it as soon as possible.
