Who will explain the efficacy and function of sesame oil?

Color identification method: pure sesame oil is red or orange-red, the color of machine-pressed sesame oil is lighter than that of ground sesame oil, the color of sesame oil mixed with rapeseed oil is dark yellow, and the color of cottonseed oil is dark red.

sesame oil

Test water method: Dip a drop of fragrant oil in calm and cold water with chopsticks, and the pure fragrant oil will show colorless and transparent fine oil flowers. The flowers adulterated with sesame oil are small and thick, and it is not easy to spread.

Smell method: The fragrance of ground sesame oil is mellow, rich and unique. If peanut oil, soybean oil, refined oil and rapeseed oil are mixed, it will not only have a bad smell, but also have other smells such as peanut and bean smell. Some sesame oil is blended with edible essence and has a poor sense of smell. [ 1]

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Sesame oil can be divided into two categories according to its flavor characteristics:

One is sesame oil, which has a strong or obvious fragrance of sesame oil. The special ingredients in sesame are processed by high-temperature frying technology to produce substances with special fragrance, which makes sesame oil have a unique fragrance and is different from other edible vegetable oils, so it is called sesame oil. Sesame oil can be divided into small ground sesame oil and machine-made sesame oil according to processing technology.

The second is ordinary sesame oil, which has a faint fragrance. It is prepared by common pressing method, leaching method or other methods.

Sesame oil contains a certain amount of vitamin E, sesamol, sesamol and other unique substances of sesame oil, which has strong antioxidant capacity, so sesame oil is more suitable for storage than other vegetable oils.

Consumers can identify sesame oil from the following aspects:

A look at the color: pure sesame oil is reddish or reddish with yellow. If mixed with other oils, the color will be different. Rapeseed oil is dark yellow and cottonseed oil is dark red. For products mixed with other vegetable oils, you can also use the water testing method: dip a drop of fragrant oil on the calm water with chopsticks, and pure sesame oil will appear colorless and transparent fine oil flowers, while adulterated oil will appear thicker and smaller oil flowers.

Second, look at transparency: generally good quality sesame oil has good transparency and is not turbid.

Third, looking for sediment: good quality, no sediment and suspended matter, low viscosity.

Fourth, see if there is stratification: sesame oil is quite sensitive to temperature, and it may be stratified at low temperature. If there is stratification at room temperature, the viscosity does not increase obviously at 0℃ (the national standard storage at 0℃ is 5.5, and it is qualified if it is not frozen), it is probably adulterated mixed oil. If there is no stratification at any temperature, it means that antifreeze additives have been added to sesame oil.

Five checks: check the trademark carefully, pay attention to the shelf life and delivery date, and be especially vigilant if there is no factory name, address and quality standard code. Pay special attention to its raw materials or ingredients (especially small words, written).

Sixth, look at the price: refer to the price of sesame. Generally, 2.5~3 Jin of sesame gives one Jin of sesame oil. The price is too low, obviously it is fake sesame oil blended with essence!

main problem

Judging from the problems existing in recent years, the main problems existing in sesame oil are:

1. Mix other vegetable oils with sesame oil or extract residual oil from waste oil residue to make it second-rate.

2. The external label of the product is inconsistent with the enterprise standard. This kind of product is often not stated in the external label of the product, but it is stipulated in the enterprise standard that other vegetable oils can be added, which is difficult for consumers to distinguish.

3. Sesame oil sold in the market mainly comes from individual small workshops, with no production scale, lack of quality control means, and labels are often changed.

4. Many vegetable markets and markets have stalls for on-site processing of sesame oil, but its quality is difficult to guarantee.

5. Some stores blend other edible oils with edible essence, and make high profits by shoddy.

The adulteration of sesame oil has always existed. Vegetable oil lacks quantitative basis. The international code Stan 26- 198 1 stipulates the fatty acid composition range of sesame oil, which provides a feasible basis for identifying sesame oil adulteration. Because the market price of sesame oil is higher than other vegetable oils, criminals use the special and rich fragrance of sesame oil to add other vegetable oils to sesame oil for sale, making huge profits and seriously damaging the interests of consumers.

2 Applicable crowd editing

Generally everyone can eat it. 2 ~ 4 grams each time. Patients with habitual constipation drink a mouthful of sesame oil on an empty stomach in the morning and evening, which can moisten the intestines and relieve constipation; It is also suitable for patients with angiosclerosis, hypertension, coronary heart disease, hyperlipidemia, diabetes, dry stool, ascaris intestinal obstruction and other diseases. Sesame oil is also suitable for people engaged in heavy physical labor and people who have smoking habits and alcohol addiction. [2]

The survey found that pregnant women and lactating women eat more sesame oil, which is helpful to speed up the elimination of evil blood, supplement the lost nutrients such as vitamin E, iron and calcium, and improve their resistance. Especially during pregnancy and lactation, women eat more sesame oil, which can help women better protect their health and promote metabolism. At the same time, sesame oil contains no harmful components, but is rich in vitamin E and linoleic acid, which has the functions of lowering blood fat, softening blood vessels, lowering blood pressure and promoting microcirculation. Vitamin E supplementation can increase the concentration of estrogen in women, improve fertility and prevent miscarriage.

Disadvantaged population

People suffering from bacillary dysentery, acute gastroenteritis, diarrhea and other diseases should avoid eating more sesame oil. [2]

3 suggested editing

10 ~ 20g per day.

4. Select Save and Edit.

◎ Pure ground sesame oil is copper red, clear and fragrant.

◎ Put fresh sesame oil into a small glass bottle, add salt according to the ratio of 500g sesame oil+1 g salt, cover the bottle cap tightly, shake it constantly, and put it in the dark after salinization. After 3 days, pour the sesame oil into a dark glass bottle, without using a rubber stopper, and put it in the dark.

5 main process editor

Small ground sesame oil is mainly produced by "water substitution method"

Stone mill grinding

sesame oil

The grinding process of stone mill is low temperature and low pressure, and the process temperature is only 60-65℃, which will not destroy the aromatic substances and functional nutrients in sesame oil.

Oil extraction by water displacement method

Oil germ can be easily separated by using high-quality drinking water, and there is no need to add any chemical solvent in the process of oil extraction, so there is no chemical solvent residue. At the same time, due to the high specific gravity of sesame oil, heavy metals harmful to human body are also precipitated from sesame oil, so the sesame oil prepared by this method is completely healthy.