YAN Xiao-jie, GU Zhi-xin, LU Feng-lai, et al. Determination of Total Polyphenol from by Folin-phonel Colorimetry[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(18): 74-78.
YAN Xiao-jie, GU Zhi-xin, LU Feng-lai, et al. Determination of Total Polyphenol from by Folin-phonel Colorimetry[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(18): 74-78. DOI: 10.11653/syfj2013180074.
Objective: To establish a method for determination of total polyphenol from Callicarpa nudiflora. Method: The total polyphenol content of C. nudiflora was analyzed by folin-phonel colorimetry. The optimum conditions were investigated using gallic acid as standard. Result: The polyphenol content of C. nudiflora could be well calculated by applying folin-phonel reagent 0.5 mL
7.5% Na2CO31.5 mL
reacted 10 min at 40 ℃
color condition 60 min at 25 ℃ for colorimetric reaction. The linear range of standard curve was 0-18 μg. The regression equation was found as follows Y=32.262X-0.001 2 (n=7) with the correlation coefficent r=0.999 9. Conclusion: The method established is simple
stable and accurate
which is suitable for analysis of total polyphenol and quality control in C. nudiflora.