Vegetable oil is a compound composed of unsaturated fatty acids and glycerin. It is widely distributed in nature and is an oil obtained from fruits, seeds and germs of plants. Such as peanut oil, soybean oil, flaxseed oil, castor oil, rapeseed oil, etc., which are sold in general supermarkets and grain and grain stores. oils.
The main component of vegetable oil is the ester produced by linear higher fatty acids and glycerin. In addition to palmitic acid, stearic acid and oleic acid, fatty acids also contain a variety of unsaturated acids, such as. erucic acid and tung oil acid, ricinoleic acid, etc.
Vegetable oil mainly contains vitamins E, K, calcium, iron, phosphorus, potassium and other minerals, fatty acids, etc. The fatty acids contained in vegetable oils can make the skin moisturized and blaughing.
Detailed informationKey indicators of vegetable oil:
1. Increasing the peroxide value in edible vegetable oil will lead to oxidation and lower quality of the oil and reduce the nutritional value of the vegetable oil. The “Hygienic Standards for Edible Vegetable Oils” stipulate that the peroxide value should be less than 0.25 g/100 g.
2. Acid number. Increasing the acid number in dietary vegetable oils can cause oil fission, reduce the nutritional value, and affect the normal digestive function of the human body. The “Hygienic Standards for Edible Vegetable Oils” stipulate that the acid number should be less than 3 mg/g. .
3. Leaching of oil solvent residue. Edible vegetable oil produced by the leaching method contains traces of leached oil solvent. The “Hygienic Standard for Edible Vegetable Oil” stipule that it should be less than 50 mg/kg, and first and second grade soybean oil should not do so. be detected.
4. Heating test. The heating test is a simple method to identify the degree of refining of edible vegetable oils. This item is unqualified, indicating that vegetable oil may be crude oil (vegetable oil that has not yet met the requirements of hygiene standards cannot be consumed or sold).
Baidu Encyclopedia - Vegetable oil
Baidu Encyclopedia - Edible vegetable oil