The recycling price of the remaining fried waste oil from catering companies is 0.3 yuan per pound.

"Gutter oil" is strictly prohibited from being used in the field of edible oil. However, there are indeed some people who secretly produce and process "gutter oil" and sell it as cooking oil to some small restaurants at low prices, causing great harm to people's physical and mental health.

Therefore, the name "gutter oil" has become synonymous with various types of inferior oil that cause physical harm to people's lives. After gutter oil enters cooking oil, various bacteria and viruses in it will directly enter the human body, making it easy to get hepatitis A, gastric cancer, lung cancer, brain diseases, and genetic mutations. Therefore, the price of waste oil recycling is very low.

Notes on daily edible oils

The acid value of edible vegetable oil should not exceed 3, and it should not exceed 5 during frying. The acid value limit allowed for "vegetable crude oil" in the standard is much higher because these oils are not refined and contain more free fatty acids. This is also the reason why "self-pressed oil" and "soil-pressed oil" have many impurities and low quality.

The standard requires that the peroxide value should not exceed 0.25, but there is no testing requirement for the peroxide value during frying. In other words, it is not suitable to use peroxide value to detect changes in oil quality during frying. Suitable indicators are acid value and polar components.

Reference for the above content: Baidu Encyclopedia - Gutter Oil