WU Ling-fang, ZHANG Hong-yan, WANG Kun-feng, et al. Determination of Total Tannins in Fruits of Tibetan Medicine from Different Areas[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(15): 61-63.
WU Ling-fang, ZHANG Hong-yan, WANG Kun-feng, et al. Determination of Total Tannins in Fruits of Tibetan Medicine from Different Areas[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(15): 61-63. DOI: 10.11653/syfj2013150061.
Objective: To develop a phosphomolybdic acid-casein spectrophotometry for determination of total tannins in fruits of Phyllanthus emblica from different areas. Method: With gallic acid as reference substance and phosphomolybdic acid as chromogenic agent
detection wavelength 760 nm
the content of total tannins in P. emblica from eight different areas was determined. Result: The linearity range of gallic acid was 0.306-2.448 mg·L-1 with r=0.999 1
the average recovery was 99.27% with RSD 2.30%.The content of total tannins in P. emblica from different areas were significantly different (6.72%-11.95%)
the content of total tannins in samples from India and Nepal were the highest. Conclusion: This method was simple
accurate and reproducible which could be adopted for determination of total tannins in P. emblica.