Regulatory Technology
Wang Xiaoning, Dong Xin, Bu Ren, Wang Yuewu, Yu Juan, Lu Jingkun
Objective: Gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS) was used to quantitatively analyze terpinen-4-ol, α-pinene, methyleugenol, elemicin, safrole and myristcin in 16 batches of volatile oil of nutmeg. Combined with anti-inflammatory activity dose-effect analysis, the quality of the active ingredients in nutmeg was evaluated. Methods: CO2 supercritical extraction method was used to extract the volatile oil of nutmeg, and a GC-MS/MS method was established to analyze the six components in nutmeg. Methodological investigation was conducted and the content of six components in 16 batches of volatile oil samples was determined. Gas chromatographic conditions: J&W DB-17ms gas column (30 m×0.25 mm, 0.25 μm); temperature rise procedure: 50 ℃, keep for 1 min, rise to 150 ℃ at the rate of 10 ℃·min-1, keep for 3 min; then it was raised to 250 ℃ at the rate of 20 ℃·min-1 and keep for 3 min. Inlet temperature 280 ℃; the carrier gas was nitrogen, the fl ow rate was 1 mL·min-1, the shunt ratio was 10:1, and the sample size was 1 μL. The infl ammation model of Raw264.7 macrophages induced by lipopolysaccharide (LPS) was established in 16 batches of volatile oil, and the pharmacodynamic analysis was performed. The volatile oil samples were analyzed by principal component analysis (PCA-X) and Pearson coefficient was positive compounds as contributing components. Results: There was a good linear relationship between terpinen-4-ol, α-pinene, methyleugenol, elemicin, safrole and myristicin in the corresponding concentration range. RSD of the six components ranged from 0.18% to 0.90% for precision test, 1.53% to 2.90% for repeatability test, and 2.11%-2.94% for stability test. The average recoveries (n=9) were 98.32%, 99.41%, 94.79%, 98.82%, 96.14%, 97.81%, and RSD was 1.51%, 1.62%, 1.87%, 0.71%, 1.82%, 1.31%, respectively. The contents of terpinen-4-ol, α-pinene, methyleugenol, elemicin, safrole and myristicin in 16 batches of volatile oil samples ranged from 4.674-12.432 mg·g-1, 2.316-11.121 mg·g-1, 0.201-4.653 mg·g-1, 1.047-10.488 mg·g-1, 201.776-402.163 mg·g-1, 7.888-39.570 mg·g-1, respectively. The results showed that there was a correlation between the anti-infl ammatory activity and the content of six components. The anti-infl ammatory activity of methyleugenol, elemicin and myristicin contributed, and elemicin contributed the most. Conclusion: A dose-effect relationship analysis was established for the anti-inflammatory activity of six components in 16 batches of volatile oil of nutmeg. The method is simple and rapid, and provides a basis for the quality control, safe and effective application of nutmeg.