该研究探讨蒜杆、紫苏、陈皮、梨木、桃木、枣木烟熏液的品质及多环芳烃（polycyclic aromatic hydrocarbons，PAHs）的含量，并采用毒性当量因子（toxic equivalent factors，TEFs）对烟熏液的毒性风险进行评估。研究表明，自制烟熏液品质指标差异明显，密度为1.01~1.04 g/mL、色泽L*值为45.01~67.56、a*值为23.06~29.86、b*值为86.68~96.16、可溶性固形物含量为8.90%~15.77%、pH值为2.54~8.65、总酚含量为1.95~8.18 mg/mL、羰基化合物含量为2.23~19.81 g/100 mL、总酸含量为1.53%~12.51%。烟熏液指标间存在较大的相关性，在正相关中，密度与可溶性固形物含量相关性最强，相关系数为0.998；在负相关中，色泽b*值与可溶性固形物含量相关性最强，相关系数为-0.986。烟熏液中16种PAHs均被检测出，其中苯并[a]芘（BaP）含量为0.13~1.53 µg/kg，总PAHs含量范围为123.53~2222.31 µg/kg。烟熏液中PAHs主要是苊烯，其中3环占比最高，范围为60.05%~97.39%。烟熏液中16种PAHs的毒性当量浓度TEQBap（toxic equivalent quantity，TEQ）分别为梨木5.00 μg/kg、陈皮4.25 μg/kg、市售3.18 μg/kg、紫苏2.25 μg/kg、蒜杆1.74 μg/kg、桃木1.37 μg/kg、枣木0.64 μg/kg。通过对烟熏液相关指标的测定，PAHs的分布特征及毒性风险，为烟熏液的安全使用提供参考和依据。

In this paper, the quality and polycyclic aromatic hydrocarbons (PAHs) content of garlic stick, Perilla frutescens, dried tangerine peel, pear wood, peach wood and jujube wood liquid smoke were studied, and toxic equivalent factors (TEFs) was used to evaluate the toxicity risk of liquid smoke. The results showed that there was the significant difference in quality index of liquid smoking, the density was 1.01~1.04 g/mL, the color L* value was 45.01~67.56, the a* value was 23.06~29.86, the b* value was 86.68~96.16, the soluble solid content was 8.90%~15.77%, the pH value was 2.54~8.65, the total phenol content was 1.95~8.18 mg/mL, the carbonyl compound content was 2.23~19.81 g/100 mL, and the total acid content was 1.53%~12.51%. There was a great correlation among the indexes of liquid smoke. In the positive correlation, the density had the strongest correlation with the content of soluble solids, and the correlation coefficient was 0.998; in the negative correlation, color b* value had the strongest correlation with soluble solid content, and the correlation coefficient was -0.986. The 16 kinds of PAHs were detected in the liquid smoke, among which the content of benzo(a)pyrene (BaP) was 0.13~1.53 μg/kg, and the total PAHs content ranged from 123.53 to 2222.31 μg/kg. Acenaphthene was the main PAHs in liquid smoke, and the proportion of 3 rings was the highest, ranging from 60.05% to 97.39%. The toxic equivalent quantity (TEQ) values of 16 kinds PAHs in liquid smoke were 5.00 μg/kg (pear wood), 4.25 μg/kg (dried tangerine peel), 3.18 μg/kg (commercial), 2.25 μg/kg (Perilla frutescens), 1.74 μg/kg (garlic stick), 1.37 μg/kg (peach wood) and 0.64 μg/kg (jujube wood). Through the determination of related indexes, as well as the analysis on distribution characteristics of PAHs and toxicity risks in liquid smoke, it can provide reference and basis for the safe use of liquid smoke.

国家重点研发计划项目（2019YFC1606200）