How to use experimental methods to detect cottonseed oil blended in salad oil?

It is difficult to identify for the time being, the so-called "oil for oil, ghost is sad".

The types of oil are complex, and the identification of gossypol substances is more feasible, but after refining cottonseed oil, gossypol can still be reduced to a very low level. In the case of freezing test, it is still difficult to identify the cottonseed oil after extraction. Chromatography is nothing more than the detection of fatty acids or triglycerides, which vary with the blend and the different types of oils, and there is no specific value (if the origin is different, there may be a large difference in the same oil).

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Salad oil is mainly used as raw oil for cold salad or sauces and seasonings. Salad oil can be eaten raw, as it is especially suitable for Western food"Salad"Coleslaw gets its name.

Difference Between Salad Oil and Peanut Oil:

First, the raw materials are different.

1. Salad oil: mainly soybean salad oil, rapeseed salad oil, rice bran salad oil, cottonseed salad oil, sunflower salad oil.

2. Peanut oil: the main raw material is peanuts.

Second, the nutritional content is different.

1. Salad oil: nutrients per 100 grams: calories:

kcal, fat: g, vitamin E: mg, calcium:

mg, phosphorus: mg, sodium: mg, magnesium:

mg, iron: mg, zinc: mg, copper:

mg, manganese: mg, potassium: mg, cholesterol:

Milligram. 2. Peanut oil: composed of 20% saturated fatty acids and 80% unsaturated fatty acids, mainly oleic acid, linoleic acid and palmitic acid, iodine value of about 80 110, belongs to dry oil, the oil color is light yellow and transparent, fragrant, is a high-quality cooking oil.

Third, the effect is different.

1. Salad oil: Salad oil is rich in nutrients such as vitamin E, unsaturated fatty acids, carothy-like 1-element, and salad oil also contains less free fatty acids.

Salad oil has the effects of antioxidant, inhibiting the proliferation of cancer cells, improving immunity, reducing blood lipids and cholesterol, and may prevent the occurrence of cardiovascular diseases to a certain extent, and is beneficial to the development and growth of dry blood vessels and brain. In addition, salad oil does not contain carcinogens aflatoxin and cholesterol, which has a protective effect on the body.

Suitable for all ages, about 40 grams per day. Salad oil can be used in pan-fried, stir-fried, deep-fried, and cold dishes to preserve the original taste and color of vegetables and other foods.

2. Peanut oil: The zinc content of peanut oil is many times that of salad oil, corn oil, rapeseed oil and soybean oil. Although there are many ways to supplement zinc, oils and fats are essential supplements for people's daily life, so edible peanut oil is especially suitable for zinc supplementation for the general public.

Contains anti-aging ingredients, which have the effect of delaying the aging of brain function. Peanut oil also has the effect of strengthening the spleen and moistening the lungs, relieving food accumulation, and repelling insects. It has also been found that there are 3 kinds of cardiovascular and cerebrovascular health ingredients that are beneficial to longevity.

Resveratrol, monounsaturated fatty acids and -sitosterol, experiments have proved that these substances are chemopreventive agents for tumor diseases, as well as chemopreventive agents for reducing platelet aggregation and preventing arteriosclerosis and cardiovascular and cerebrovascular diseases. The consumption of choline in peanut oil by middle-aged and elderly people can also improve the memory of the human brain and delay the decline of brain function.

No, cottonseed oil itself has a little flavor, but it is not strong. It's no problem to mix them together and eat them. Your soy salad oil itself is not pure soybeans, and it is also made from a mixture of oils, but the main ingredient is soybeans.

Sanitary oil is essentially refined cottonseed oil, but cottonseed is not a food and is toxic, so in order to avoid misunderstanding and affect sales, it was renamed sanitary oil, which means clean and harmless oil.

Sanitary oil is a refined cottonseed oil that removes the harmful gossypol from cottonseed oil, making it ready for human consumption.

Actually, it's the same, but the name is different. Sanitary oil is cottonseed oil, which is pressed and purified and can be eaten, so it is also called sanitary oil.

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Serious criticism !!

Difference: Salad oil is a high-grade edible vegetable oil refined by various plant ** through degumming, decolorization, deodorization and other processing procedures. Blended oil, also known as high-hop oil, is an edible oil made by blending more than two refined oils and fats in proportion according to the needs of use.

Salad oil can be eaten raw, as it is especially suitable for Western food"Salad"Coleslaw gets its name. The blended oil cannot be eaten raw, and is generally used for boiling, stir-frying, frying, and frying.

The main salad oils on the market are soybean salad oil, rapeseed salad oil, rice bran salad oil, cottonseed salad oil, sunflower salad oil and peanut salad oil. Blended oils generally include refined soybean oil, rapeseed oil, peanut oil, sunflower oil, and cottonseed oil.

Salad oil contains soybean oil.

Salad oil: The new standard of first-class oil, which is a refined edible oil made by refining crude oil, which can be used for raw consumption.

Blended oil: It is an edible oil made by blending more than two refined oils and fats (except flavor oil) in proportion according to the needs of use.

What is the difference between blended oil and salad oil, and which is better? Today is a long time to see.

Salad oil is pure and refined through crude oil, such as first-grade soybean oil;

Blended oil is greater than or equal to two oils, such as peanut oil + palm oil;

It's hard to say, some businesses use relatively low oil to blend to reduce costs, such as palm oil, not that palm oil is bad, but that palm oil is cheaper. In general, salad oil is more expensive than blended oil.

Salad oil is the first-class oil of the new standard, which is the highest grade of edible oil, and it is characterized by both stir-frying and cold dishes. At present, the varieties of salad oil on the market are: soybean salad oil, rapeseed salad oil, cottonseed salad oil, peanut salad oil, sunflower salad oil, rice bran salad oil, etc.

Blended oil: Simply put, it is an edible oil made by blending more than two varieties of oil. Various oils are blended together to make them more nutritious.