Which is healthier, pressing oil or blending oil, salad oil?

Saladoil, the translation of English Saladoil, is one of the advanced edible oils. According to the degree of refining, oils and fats are generally divided into four grades: secondary oil, primary oil, advanced edible oil and salad oil. Secondary oil is only degummed oil, with dark color, large fume and high acid value. The first-grade oil is the product after degumming, deacidification and decoloration. Although it is better than secondary oil, its color is dark yellow and its oil fume is still large. Advanced edible oil is made by deodorizing and dewaxing two or more vegetable oils on the basis of first-class oil. Also called cooking oil, cooking oil or frying oil. It is characterized by light yellow color, low acid value and no smoke when heated to 200 degrees Celsius. Fried oil cakes and fried dough sticks are oil-free and cannot be frosted. Salad oil is lighter in color than high-grade edible oil, with less oil fume and almost no impurities. It is so pure that it won't smoke when heated to 220 degrees Celsius. This oil can be eaten directly with cold dishes.

Salad oil is still clear and transparent at 0℃ for 5.5 hours, while high-grade edible oil may be turbid; Salad oil is mainly used for cold food such as cold dishes, salads, mayonnaise, etc., which can keep fluidity at 5 ~ 8℃, while edible oil is mainly used for home cooking. Olive oil is the best salad oil. It not only has unique fragrance and color, but also has unique fatty acid composition. It is considered as a healthy edible oil. However, because olive oil mainly depends on imports, its price is high and its consumption is limited.

Blending oil is a high-grade edible oil made from two or more kinds of edible oils through scientific blending. One of the common blending oils in the market is to blend saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids in a certain proportion according to nutritional requirements. This blended oil is mostly made of vegetable oils such as rapeseed oil, soybean oil, sesame oil, corn germ oil, safflower seed oil and linseed oil. Another blending oil is made of peanut oil, sesame oil, refined rapeseed oil and soybean oil, which is suitable for consumers who pay attention to the flavor of dishes.

Generally speaking, edible oil is mainly used for cooking and frying food, and salad oil is mainly used for cold salad. Salad oil can reduce the content of cholesterol in human serum. Not suitable for frying oil, but it can be used as edible oil. Blended oil is an oil product made of different fatty acids. It helps to improve the nutritional value or flavor of oil products. Generally speaking, blended oil has more nutritional value and is better for the elderly.