The standard number of pure rapeseed oil is GB/T1536-2004.

In the "National Quality Standard for Rapeseed Oil", the government divides rapeseed oil into four grades, with grade one being the best and grade four being the worst. Compared with the third-grade and fourth-grade rapeseed oil, the first-grade oil and the second-grade oil have a higher degree of refining. They have gone through processes such as degumming, deacidification, decolorization, and deodorization. They are odorless, light in color, have a high smoke point, and have no cooking fumes. It has the characteristics of less and not easy to solidify at low temperature.

Tips for purchasing rapeseed oil

1. Look at the color: pure rapeseed oil is dark yellow or brown, while inferior rapeseed oil is brown-red, tan or brown. .

2. Smell: Good rapeseed oil has the aroma of rapeseed, but inferior rapeseed oil has a very light smell, and may even have odors such as musty, burnt, and hay.

3. Look at the transparency: high-quality rapeseed oil is clear and transparent, while inferior rapeseed oil will have suspended matter or even turbid liquid.

4. Taste: Put a little rapeseed oil on your tongue. If there is no peculiar smell except a spicy taste, it means it is pure rapeseed oil. But if the taste is bland, or even sour, burnt, or bitter, then it is bad rapeseed oil.

Reference for the above content? Baidu Encyclopedia - Rapeseed Oil