The invention belongs to the field of
food flavor analysis and origin tracing, and particularly relates to a method for tracing the origin of Liuzhou
margarya melanioides rice noodle soup bases. According to the tracing method, through sampling, HS-SPME, GC-
MS analysis, OAV analysis and recombination and deletion experiments, the combination and the concentration range of seven characteristic
odor substances in the authentic Liuzhou river
snail rice noodle soup base are identified for the first time as follows:
anethole (27.92-15782.67 mu g / kg), m-
cresol (78.6-1038.03 mu g / kg),
eugenol (484.58-2043.82 mu g / kg), alpha-
pinene (29.98-542.7 mu g / kg), estragole (37.04-1496.43 mu g / kg),
linalool (22.1-367.02 mu g / kg) and beta-
ionone (3.19-18.48 mu g / kg). The volatile compounds and the content of the volatile compounds in the to-be-detected soup base sample are compared with the combination and the concentration range of the seven characteristic
odor substances in the authentic Liuzhou river
snail rice noodle soup base, and whether the to-be-detected soup base sample is the authentic Liuzhou river
snail rice noodle soup base or not can be accurately judged. The method provides reference for consumers to taste authentic
flavor of Liuzhou river snail rice noodles, and has important practical significance for
quality control of the Liuzhou river snail rice noodle soup base.