The second method: electrothermal drying oven method, which is only suitable for detecting non-drying oil whose acid value is less than 4mg/g, is not suitable for laurel oil (palm kernel oil and coconut oil).
There are many kinds of animal and vegetable oils. Common vegetable oils are soybean oil, peanut oil, rapeseed oil, sesame oil and salad oil, mostly unsaturated fatty acids. Animal fats, such as lard and butter, are mostly saturated fatty acids. In the production and application of animal and vegetable oils, it is often necessary to detect their moisture content. Commonly used detection methods include national standard method and rapid method (LXT-800 moisture analyzer for animal and vegetable oils). At present, the current testing standards are: GB5009.236-20 16 National Food Safety Standard "Determination of Moisture and Volatiles in Animal and Vegetable Oils", which stipulates two testing methods for moisture and volatiles in animal and vegetable oils.