Studies on extraction processes for citrus aurantium L and its quality analysis

Aim: To study the best extracting process of citrus aurantium L and establish a method for its quality analysis. Methods: An orthogonal test method was used. The solvent dosage(A), extracting time(B), and extracting times(C) were chosen as the three factors of the experiment, and three levels of each factor were chosen for the experiment. The content of synephrine in citrus aurantium and extracted substance was detected by TLC scanning method. Results and Conclusion: The factor A had certain effect on the rate of creaming, while the factor B and C had conspicuous effect. The best extracting process is extracting three times by using six times of 95% ethanol for 1.5 h every time. The content of synephrine in citrus aurantium is 0.438% and the content of synephrine in extracted substance is 4.060%.