Abstract: Headspace solid phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometer (GC-MS) was used to determine the volatile flavor compounds of the green macroalga Enteromorpha intestinalis. A comparative sensory evaluation of the main flavor substances was also done. The results showed that the main characteristic volatile flavor compound of Enteromorpha intestinalis were (Z)-3-heptadecene, with a content as high as 59.43% in fresh samples. The other volatile flavors were hexadecanal, (E,E)-2,4-heptadienal, beta-ionone, nonanal, (E)-2-hexenal, 2,4 - pentadienal, (E,E)-2,4-decadienal, and so on.

Key words: Enteromorpha intestinalis, headspace solid phase microextraction, gas chromatography-mass spectrometry, volatile flavors