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Comparison of naringin content in Exocarpium Citri Grandis fruits at different diameters |
LI Qiong-xia1 LI Xiao-xin1 XIE Cheng-en1 LIAO Hui2 |
1.Department of Clinical Laboratory,Yuexiu Center for Disease Control and Prevention in Guangzhou City,Guangdong Province,Guangzhou 510055,China;
2.Department of Quality,Foshan Ziyunxuan Pharmaceutical Co.Ltd.,Guangdong Province,Foshan 528000,China |
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Abstract Objective To compare the difference in naringin content between fruits of Exocarpium Citri Grandis at different diameters using high performance liquid chromatography (HPLC).Methods A total of 25 batches of Exocarpium Citri Grandis fruits at different diameters were crushed through No.3 sieve,and naringin was extracted by ultrasonic extraction with methanol.The column of Gemini C18(4.6 mm×250 mm,5 μm)was used,the mobile phase was methanol and 6%acetic acid water with the ratio of 35:65,the flow rate was 1.0 ml/min,the column temperature was 25°C.The detection wavelength was 283 nm,and sample injection in 20 μl was for detection.Results The standard curve of the determination method was y=16.8568x+3.2460 (r=0.9999),and the linearity was good in the range of 0-80 μg/ml.The lowest quantitative concentration was 6.67 μg/ml(signal to noise ratio was 10:1).The average recovery rate of three concentrations was 99.66%,and the RSD was 1.2%.The repeatability,precision,and stability all met the requirements.The naringin content was between 3.26%and 28.56%.Conclusion There is a significant difference in the content of naringin in Exocarpium Citri Grandis fruits at different diameters,which is worth promoting young fruit of Exocarpium Citri Grandis as a medicinal resource.
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