What is oleic acid? For example, those? Are shea, animal and vegetable oils, stearic acid, etc. olei

Oleic acid

Scientific name: (Z)-9-octadenoic acid; cis-9-octadenoic acid; octadenoic acid; cis-9-octadenoic acid; cis-octadec-9-enoic acid.

A fatty acid. The molecular formula is C18H34O2, and the structure is simply CH3(CH2)7CH=CH(CH2)7COOH. The scientific name is cis-9-octa(carba)enoic acid.

Oleic acid, along with other fatty acids, is found in all animal and vegetable oils and fats in the form of glycerides. In animal fats, oleic acid accounts for about 40 50 of fatty acids. In vegetable oil, it can vary greatly, as high as 83 in tea oil, 54 in peanut oil, and only 5 6 in coconut oil.

Pure oleic acid is a colorless oily liquid, with the smell of animal oil or vegetable oil, and the color gradually darkens in the air for a long time, and the industrial product is a yellow to red oily liquid with a lard odor. Melting Point, Boiling Point 286 (100 mm Hg), Relative Density, Refractive Index, Flash Point 372. Soluble in organic solvents such as ethanol, ether, chloroform, etc., insoluble in water.

Flammability. It is easy to saponify when alkalinized, and after solidification, it produces a white soft solid. It is very easy to oxidize, polymerize or decompose under high heat.

Innocuity. When oleic acid and nitric acid react, it is isomerized into trans isomers, and the melting point of oleic acid is 44 45; stearic acid is obtained by hydrogenation; Oxidation with potassium permanganate yields a mixture of n-nonanoic acid and azelaic acid. Due to the double bond contained in oleic acid, it can undergo self-oxidation when placed in the air for a long time, and locally transform into carbonyl-containing substances, which has a putrid hala smell, which is the cause of oil deterioration. Commercial oleic acid generally contains 7 12 saturated fatty acids, such as palmitic acid and stearic acid.

The sodium or potassium salt of oleic acid is one of the components of soap.

Applications: Mainly used for the preparation of plastic plasticizers butyl epoxy oleate or octyl epoxy oleate. It is used in the wool industry to prepare antistatic agents and lubricating softeners. It is used in the wood industry for the preparation of water-repellent paraffin emulsions.

Azelaic acid is prepared by oxidation, which is the raw material of polyamide resin (nylon). It can also be used as pesticide emulsifier, printing and dyeing auxiliary, industrial solvent, metal mineral flotation agent, release agent, oil hydrolytic agent, for the preparation of carbon paper, typing paper, ballpoint pen oil and various oleates. As a chemical reagent, used as a chromatographic comparison sample and for biochemical research, to verify calcium, ammonia, copper, magnesium, sulfur, etc.

Pure sodium oleate has good detergency and can be used as a surfactant such as emulsifier and can be used for cholelithiasis. Other metal salts of oleic acid can also be used in waterproof fabrics, lubricants, polishes, etc., and its barium salts can be used as rodenticides.

A 75% alcohol solution of oleic acid can be used as a rust remover.

cas no.： 112-80-1

The higher the acid value of the fat, the worse the quality of the oil.

Oils with low acid value generally mean that the quality of oils and fats is relatively high, and the impurities contained in oils and fats are relatively few, and oils with an acid value greater than 6 are generally not edible oils to eat. Therefore, it can be said that the acid value is one of the important indicators to measure the quality of oils and fats.

The oil will be rancid, and the acid value of the oil after rancidity will rise greatly, and there is a kind of hala gas. The rancidity of oil refers to the phenomenon that the fatty acyl group or free fatty acid molecule in the oil is gradually changed by the action of oxygen in the air, resulting in an unpleasant odor.

What is oil: Oils and fats are triglycerides.

It is composed of glycerol and fatty acids. Therefore, we need to effectively control the decomposition of fat and eliminate the separation of glycerol and fatty acids.

Peroxide value: refers to the peroxide in 1 kg of oil.

millimoles of , an indicator of the degree to which oils and fatty acids are oxidized. With the oxidation of oil, the peroxide value will gradually increase, generally will not affect human health, more than the national standard of the fool means that the oil is no longer fresh, too high may cause vomiting, diarrhea.

Acid value: also known as neutralization value, acid value, acidity, is the neutralization of free fatty acids contained in 1 gram of oil.

Potassium hydroxide is needed.

The milligram represents the content of free fatty acids in vegetable oil, which is an indicator of the degree of deterioration of the oil.

The above concepts may be too professional and some friends can't understand it. In the vernacular:

The peroxide value is an early indicator of rancidity of fats and fats, and the acid value is an advanced indicator of rancidity of fats and oils.

That is to say, if the acid value does not meet the hail report, it means that the degree of rancidity of the food oil is already very high, and the rancidity time has been very long. The unqualified peroxide value indicates that this food has just begun to be rancid, and it is far from reaching an incorrigible level.

According to national standards, edible oil.

If one of the test indicators is unqualified, it is judged to be a substandard product.

In order to prevent the occurrence of the above two, oil companies should focus on the storage and transportation methods, storage and transportation conditions, and moisture, temperature, light, and lipase during storage.

and other factors to control the effort.

Oleic acid is an unsaturated fatty acid with a short celery bright chain, which is a nutrient contained in animal oil and vegetable oil, and it can be said that the latter contains the former, and oleic acid is also the time that animal and vegetable oil is placed in the air.

Hello, plant buried oil and vegetable oleic acid are two different concepts. Vegetable oil refers to the liquid oil extracted from plant seeds or fruits, such as rapeseed oil, sunflower oil, olive oil, etc. Vegetable oleic acid refers to a fatty acid contained in vegetable oil, which is a type of unsaturated fatty acids, divided into monounsaturated fatty acids and polyunsaturated fatty acids.

The unsaturated fatty acids in vegetable oil are beneficial to human health, such as regulating blood lipids, lowering cholesterol, and preventing cardiovascular and cerebrovascular diseases. In addition to vegetable oleic acid, vegetable oil also contains other nutrients, such as vitamin E, carotenoids, etc. Different kinds of vegetable oils contain different amounts and proportions of unsaturated fatty acids, so when choosing vegetable oils, you need to choose according to your needs and health status.

It is important to note that although vegetable oils are beneficial to human health, they also need to be consumed in moderation, and excessive intake can increase caloric intake, leading to obesity and other health problems. Therefore, it is necessary to pay attention to the appropriate amount of vegetable oil when consuming it, and it is recommended to do it under the guidance of a doctor or nutritionist. Hopefully, my answers will help you better understand the difference between vegetable oil and vegetable oleic acid.

Hello dear, the difference between vegetable oil and vegetable oleic acid: Vegetable oil is a natural vegetable oil composed of unsaturated fatty acids that contain high calories, mainly for consumption. Vegetable oleic acid is a plant-renting macro-physical acidic substance formed by oxidizing vegetable oil.

They share some of the same properties, such as being used as antioxidants, protecting ** from UV rays, and enhancing moisturizing effects. But they also have differences, vegetable oleic acid is more antibacterial and can help control the problem and improve the condition of the damaged.

Summary. Hello, the difference between vegetable oil and vegetable oleic acid is as follows: Vegetable oil refers to oils and fats extracted from plant seeds, fruits, or nuts, such as soybean oil, peanut oil, sunflower oil, etc.

Vegetable oils are rich in unsaturated fatty acids, such as monounsaturated fatty acids and polyunsaturated fatty acids, which are beneficial to the human body. Vegetable oleic acid refers to a type of fatty acid in vegetable oil, including monounsaturated fatty acids and polyunsaturated fatty acids. Among them, monounsaturated fatty acids are mainly oleic acid, and polyunsaturated fatty acids are mainly linoleic acid and linolenic acid.

Vegetable oleic acid is beneficial to the human body, which can lower cholesterol, prevent cardiovascular diseases, etc. Therefore, vegetable oil and vegetable oleic acid are two different concepts, vegetable oil is an edible oil, while vegetable oleic acid is a fatty acid in vegetable oil.

Hello, the difference between vegetable oil and vegetable oleic acid is as follows: Vegetable oil refers to the oil extracted from plant seeds, fruit traces or kernels, such as soybean oil, peanut oil, sunflower oil, etc. Vegetable oils are rich in unsaturated fatty acids, such as monounsaturated fatty acids and polyunsaturated fatty acids, which are beneficial to the human body.

Vegetable oleic acid is a type of fatty acid in vegetable oil, including monounsaturated fatty acids and polyunsaturated fatty acids. Among them, monounsaturated fatty acids are mainly oleic acid, and polyunsaturated fatty acids are mainly linoleic acid and linolenic acid. Vegetable oleic acid is beneficial to the human body, which can lower cholesterol, prevent cardiovascular diseases, etc.

Therefore, vegetable oil is an edible oil and vegetable oleic acid are two different concepts, vegetable oil is an edible oil, and vegetable oleic acid is a fatty acid in vegetable oil.

Vegetable oils and vegetable oleic acids work well in water-soluble cutting fluids.

Lubricating and anti-rust effect.

Summary. Animal oleic acid is a light yellow transparent oily liquid at room temperature, and animal oleic acid is palmitic acid.

Animal oleic acid is a light yellow transparent oily liquid at room temperature, and animal oleic acid is palmitic acid.

Animal oil, that is, animal fat, is animal fat, animal oil for human consumption is generally ** in pig Ling cherry, Niu Mingqing, fish, etc., can be used for processing food, so that the food has the fresh aroma of meat.

One is animal fat and the other is palmitic acid.