Tobacco extract quality discrimination method

The invention discloses a method for judging the quality of a tobacco extract, which is used for judging whether the tobacco extract to be detected meets the following standards: (1) detecting nicotine, beta-diene nicotine and 2, 3 '-dipyridyl in the tobacco extract to be detected; (2) when 0 lt; m nicotine < = 3%, and P > = 50%; m nicotine is the mass fraction of nicotine in the tobacco extract; p is the proportion of nicotine in the total alkaloids of the tobacco extract; (3) the ratio of the content of beta-diene nicotine to the content of 2, 3 '-dipyridyl is not greater than 3; if the to-be-detected tobacco extract meets the item (1), the item (2) and the item (3) at the same time, the to-be-detected tobacco extract is qualified; otherwise, the tobacco extract to be detected is unqualified. According to the method, nicotine, beta-diene nicotine and 2, 3 '-dipyridyl are taken as indexes, the quality of the tobacco extract is judged, the method has the advantages of being simple and rapid to operate, reliab