"White house, red curtains, white fat people living in it" and "Shandong peanut" have always enjoyed a high reputation at home and abroad, and the peanut oil squeezed from it has naturally become one of the most important edible oils for Shandong people.
Squeezing peanut oil in cultivated land is to select high-quality peanuts from Yimeng Mountain, Shandong Province, and adopt traditional physical squeezing technology. Only the oil squeezed for the first time is taken, and 1 0,000% retains the original flavor of the oil and does not contain any chemical additives and pesticide residues. Another feature of plough peanut oil is that it has an exclusive patent certificate to remove aflatoxin, which not every brand can do.
Advantages: The various fatty acids in peanut oil are relatively balanced and rich in vitamin E, which can reduce the oxidation of unsaturated fatty acids. Generally speaking, peanut oil has good flavor and heat resistance.
Disadvantages: The fatty acid content in peanut oil is relatively high, reaching 37%. Peanut is easy to pollute aflatoxin, which is particularly soluble in oil.
Suggestions on eating oil: When buying peanut oil, you must choose high-quality products of big brands, such as ploughing peanut oil. In cooking, peanut oil is stable and can be used for daily cooking, but it is not suitable for stir-frying or frying. It should be reminded that peanut oil with edible oils rich in omega-3 fatty acids such as walnut oil, almond oil and perilla seed oil is more beneficial to health.
2. Camellia oil can replace olive oil
Camellia oil, also known as camellia seed oil, is taken from camellia seed. Camellia oleifera is everywhere in the hilly areas of Hunan and Jiangxi, and camellia oil has almost become a beautiful symbol of local culture in south-central China.
Advantages: The unsaturated fatty acids in camellia oil are as high as 85%~97%, which is higher than any other oil. The content of oleic acid (a monounsaturated fatty acid, which is beneficial to reducing "bad cholesterol", increasing "good cholesterol" and controlling blood lipids) is about 80%, even higher than that of olive oil.
Camellia oil is not inferior to olive oil in nutritional value and dietotherapy function, and its price is cheap, so it is also called "Oriental olive oil". Camellia oil has good heat resistance.
Disadvantages: The content of polyunsaturated fatty acids in camellia oil is relatively low.
Suggestion on eating oil: At present, some small oil-squeezing workshops use indigenous hot pressing to make oil, which may have many problems such as too many impurities, great nutrient loss and easy mildew. It is suggested to buy big brand camellia oil as much as possible, such as tea oil from foreign soil plows, and adopt traditional physical pressing technology, but only the first pressed oil does not contain any chemical additives and impurities, so you can buy and eat it with confidence. Camellia oil is suitable for daily cooking and can also be used as a cold salad. Camellia oil is suitable for oils containing polyunsaturated fatty acids such as soybean oil and corn oil.
3. Soybean oil is suitable for stewing.
Soybean oil is squeezed from soybeans and mainly produced in Northeast China, North China and East China.
Advantages: Soybean oil is mainly linoleic acid, containing a small amount of α -linolenic acid and very little saturated fatty acid. Linoleic acid has a limited effect on reducing the risk of heart disease, but α -linolenic acid is more beneficial. Clinical nutrition experiments have confirmed that besides high cholesterol, the other two risk factors of coronary heart disease are hypertension and vascular embolism, and linolenic acid can just reduce these two factors.
Disadvantages: Because linoleic acid and linolenic acid are not heat-resistant, linolenic acid is particularly afraid of heat, and it is easy to oxidize and polymerize after frying or repeated heating, which is very harmful to health.
Suggestions on eating oil: Soybean oil is best used for low-temperature cooking, such as making noodles, making soup and stewing stuffing. And it is not suitable for frying food at high temperature for a long time. Fatty acids such as corn oil, sunflower oil and wheat germ oil are similar to soybean oil. Soybean oil is rich in vitamin E, and its yellowish color comes from a small amount of carotene.
If you usually eat a lot of bean products, soybean oil has been ingested from bean products, and polyunsaturated fatty acids are ingested enough, there is no need to cook with soybean oil, sunflower oil and corn oil every day. Olive oil, tea seed oil, peanut oil, rice bran oil and other oils containing more monounsaturated fatty acids can be used for cooking.
4, sesame oil is best cold.
Linseed oil, also known as linseed oil, is an oil extracted from the seeds of flax, a flax plant in flax family. Flax is naturally fond of cold and is suitable for growing in Shaanxi, Gansu, Ningxia and other regions. Linseed oil is an ancient vegetable oil, in which the word "Hu" refers to the ethnic minorities and regions in the northwest of China.
Advantages: The content of essential fatty acid linolenic acid in linseed oil is above 50%, which is much higher than that in deep-sea fish oil (5%) and walnut and pine nuts (6%~ 12%), so it can be called "land fish oil".
Linolenic acid has the functions of enhancing intelligence, memory, logical thinking ability and protecting eyesight. Linolenic acid can also regulate dyslipidemia, inhibit platelet aggregation, prevent thrombosis and inhibit the generation and metastasis of cancer cells.
Disadvantages: Flaxseed oil is easily oxidized and polymerized, and it is the least heat-resistant. Suggestions on eating oil: Children, pregnant women and the elderly can choose sesame oil appropriately, which is beneficial to intellectual development and delays memory decline. . Flaxseed oil is too unsaturated, so it should be eaten as soon as possible after opening, preferably for cold salad.
5. Choose "double low quality" for rapeseed oil.
Golden rape flowers are always the most beautiful scenery in the south. In addition to appreciation, rapeseed also produces a lot of oil, so rapeseed oil is a kind of vegetable oil that southerners often eat.
Advantages: Rapeseed oil has many nutritional values:
First of all, the composition ratio of fatty acids is closest to human needs. Rapeseed oil with low erucic acid content has low saturated fatty acid content and high oleic acid content, and its essential fatty acid linolenic acid ratio is second only to linseed oil. Secondly, rapeseed oil contains sterols that are beneficial to the body. Sterols have many physiological functions, such as lowering cholesterol, reducing cardiovascular diseases, and fighting cancer. Finally, the content of polyphenols is high. Polyphenols have biological activities such as lowering cholesterol, scavenging free radicals and anti-tumor, and are natural sources of antioxidants. In addition, rapeseed oil is also rich in vitamin E, carotenoids and trace elements such as selenium and iron.
Disadvantages: Some studies have pointed out that erucic acid contained in rapeseed oil is harmful to human body, which can lead to the increase of cholesterol in animal kidneys, and long-term intake will affect growth and development.
Rapeseed oil used to be eaten in China is a traditional "double high" (high erucic acid and high glucosinolate) oil. After continuous high-quality breeding, the "double low" quality of rapeseed has been improved, that is, the erucic acid content is low and the glucosinolate content is low. Therefore, people do not have to worry about high erucic acid when eating rapeseed oil.
Suggestions on eating oil: rapeseed oil should be eaten as soon as possible after opening the bottle. If it is left for too long, the polyunsaturated fatty acids in it are easily oxidized and destroyed by oxygen in the air, resulting in substances that are unfavorable to the human body. Fortunately, rapeseed oil is also rich in vitamin E, which can enhance the antioxidant effect and protect a variety of unsaturated fatty acids from oxidative deterioration. However, it is recommended to buy a small bottle as much as possible and finish it as soon as possible.