Derivatization method for the quantification of lactic acid in cell culture media via gas chromatography and applications in the study of cell glycometabolism

作者：Zhang, Hua-Yin; Zhang, Ping-Ping; Tan, Xiao-Xin; Wang, Ze-Ze; Lian, Kao-Qi; Xu, Xiang-Dong; Kang, Wei-Jun^*

来源：Journal of Chromatography B-Analytical Technologies in the Biomedical and Life Sciences, 2018, 1090: 1-6.

DOI：10.1016/j.jchromb.2018.05.015

• Lactic acid
• Gas chromatography
• Cell
• Alkyl chloroformate
• Derivatization

Lactic acid represents an important metabolite that reflects mitochondria function and may further serve as energy source for cancer cells. In light of this physiological and pathological significance, we developed a novel and sensitive gas chromatography method to detect lactic acid in cell culture media. Here, ethyl chloroformate was selected as derivative reagent and the derivatization process was further optimized in terms of number of reagents and reaction time as well as extraction reagents. Under optimal conditions, good linearity was achieved in the tested calibration range. The limit of detection (LOD) was determined to be 0.67 mu mol/L, the recovery rates were 99.6%-106% and the precision rate RSD was < 5.49%. Furthermore, this method has been applied to quantify the secretion of lactic acid in cells exposed to mono-2-ethylhexyl phthalate at different doses and in cancer cells over time. Taken in concert, our method proved to be both sensitive and reliable and may be applied for studies on mitochondrial function and cell glycolysis conditions.

• 出版日期2018-7-15
• 单位河北医科大学; 河北省人民医院