Food Science and Human Wellness (Jan 2023)

Characterization and comparison of the aroma-active compounds on different grades of sesame-flavor Baijiu by headspace solid-phase microextraction and gas chromatography-olfactometry-mass spectrometry

  • Dan Qin,
  • Jiawen Duan,
  • Hehe Li,
  • Fuping Zheng,
  • Huan Cheng,
  • Xingqian Ye,
  • Baoguo Sun

Journal volume & issue
Vol. 12, no. 1
pp. 79 – 88

Abstract

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This study investigated the aroma-active compounds and compared the differences of three different grades of sesame-flavor Baijiu by headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-olfactometry-mass spectrometry (GC-O-MS). A total of 54 aroma-active compounds were detected. Principal component analysis showed that JZ1, JZ2, and JZ3 were well separated from each other. JZ1 as the premium-grade Baijiu had the highest aroma intensities, concentrations. According to aroma intensities and concentrations, dimethyl trisulfide, butanoic acid, phenylacetaldehyde, 2-furylmethanethiol, ethyl hexanoate, 2,6-dimethylpyrazine, etc. could be potentially applied as volatile makers to distinguish the three different grades of sesame-flavor Baijiu as their significant difference (P < 0.05) in three Baijiu samples. Roasted aroma had the significant difference (P < 0.05) in three sample base on aroma profiles. Meanwhile, 2-furylmethanethiol, 2,6-dimethylpyrazine were related to the roasted aroma, they may be had a significant contribution to the differences of three different grades of sesame-flavor Baijiu. This study has provided a comprehensive understanding of the differences of three different grades of sesame-flavor Baijiu.

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