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Determination of 7 nucleosides in red yeast rice by HPLC |
LI Yongsheng1 ZHANG Chunling1 YANG Yuanyuan2 CHEN Zhiyon1,3 |
1.Department of Pharmacy, Honghui Hospital, Xi′an Jiaotong University of Medicine School, Shaanxi Province, Xi′an 710054, China;
2.Xi′an Institute for Food and Drug Control, Shaanxi Province, Xi′an 710054, China;
3.Institute of Chinese Materia Medica, Shaanxi Academy of Traditional Chinese Medicine, Shaanxi Province, Xi′an 710003, China |
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Abstract Objective To establish a high performance liquid chromatography method for the simultaneous determination of seven nucleosides of uracil, cytidine, hypoxanthine, adenine, inosine, thymidine and adenosine in red yeast rice. Methods Shiseido C18 (4.6 mm×250 mm,5 μm) was adopted to separate the sample at the column temperature of 25°C. Acetonitrile (A)-0.05 mol/L KH2PO4 (B) was used as the mobile phase. Gradient elution method: 0-9 min, 0% A; 9-40 min, 0%-8% A. The injection volume was 20 μL, and flow rate was 1 mL/min. The detection wavelength was 254 nm. Results Uracil, cytidine, hypoxanthine, adenine, inosine, thymidine and adenosine showed a good linear relationship with the peak area (r < 0.9995) in the range of 1.00-5.00 μg, 3.08-15.35 μg, 2.78-13.95 μg, 9.37-46.87 μg, 4.58-22.86 μg, 1.06-5.29 μg, 4.41-22.28 μg, respectively. The average recovery rates were 99.34%, 99.56%, 100.18%, 97.95%, 98.02%, 99.28%, RSD < 2.00%. Conclusion The method is reproducible and accurate, and can be used for the determination and quality evaluation of nucleotide in red yeast rice.
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