[Extraction of fatty constituents from Tabanus bivittatus and their analysis by GC-MS].

Objective: To optimize the extracting condition of fatty constituents from Tabanus bivittatus and analyse by GC-MS.

Methods: Taking fatty yield as index, the extraction technology parameters of fatty constituents of Tabanus bivittatus ere optimized by single factor test and orthogonal test.

Results: The optimum extraction parameters were as follows: the ratio of acetone to petroleum ether 1: 2, extraction time 2 h, solid-liquid ratio 1: 50.