Total volatile nitrogen (TVN) in fishmeal
30 July 2015
Total volatile nitrogen (TVN) is used as a quality criterion for fish meal and fish meal raw material.
TVN or Total Volatile Nitrogen is a parameter that measures the presence of volatile nitrogenated basis in the raw material, or in fishmeal.
When controlled in the raw material, it gives a clear estimate of the quality of the final product (fishmeal) to be obtained.
TVN is very commonly specified as a commercial condition for the fishmeal.
For very high quality products, a maximum of 100-120 mg N/100g. is (amongst other parameters) required.