Qin Yan, Shin Jung-Ah, Lee Ki-Teak
Department of Food Science and Technology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134 Republic of Korea.
Food Sci Biotechnol. 2019 Sep 13;29(3):331-337. doi: 10.1007/s10068-019-00669-7. eCollection 2020 Mar.
In this study, a headspace gas chromatography (HS-GC) method was carried out to determine the contents of acetaldehyde, methanol and fusel oils in distilled liquors and sakès from different countries. A DB-Wax column was adopted in HS-GC, which showed good linearity, high precision and accuracy and low LOQ and LOD on all the compounds. Results showed that distilled liquors contained higher levels of acetaldehyde with the values of 12.88-35.53 mg/L than sakès (0.83-29.13 mg/L). Methanol was only detected in a few distilled liquors with small amounts. Amyl alcohols, including isoamyl alcohol (2-methyl-1-butanol) and active amyl alcohol (3-methyl-1-butanol), isobutanol (2-methyl-1-propanol) and 1-propanol were the main fusel oils among the distilled liquors and sakès analyzed. Amyl alcohols contents were 2 to 4 times higher in Korean distilled liquors (203.01-428.66 mg/L) than that in Chinese distilled liquors (28.52-42.77 mg/L) and all the sakès (61.90-166.59 mg/L).
在本研究中，采用顶空气相色谱法（HS-GC）测定不同国家蒸馏酒和清酒中乙醛、甲醇和杂醇油的含量。HS-GC采用DB-Wax柱，该柱对所有化合物均显示出良好的线性、高精度和准确性以及低定量限和检测限。结果表明，蒸馏酒中乙醛含量较高，为12.88 - 35.53mg/L，高于清酒（0.83 - 29.13mg/L）。仅在少量蒸馏酒中检测到微量甲醇。在分析的蒸馏酒和清酒中，戊醇，包括异戊醇（2-甲基-1-丁醇）和活性戊醇（3-甲基-1-丁醇）、异丁醇（2-甲基-1-丙醇）和1-丙醇是主要的杂醇油。韩国蒸馏酒中戊醇含量（203.01 - 428.66mg/L）比中国蒸馏酒（28.52 - 42.77mg/L）和所有清酒（61.90 - 166.59mg/L）高2至4倍。
