Chinese Journal of Experimental Traditional Medical FormulaeVol. 18, Issue 9, Pages: 69-71(2012)
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Published:2012
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WANG Hai-tao, PENG Jin-long, Zhang Bin, et al. Extraction and Stability of Pigment from [J]. Chinese journal of experimental traditional medical formulae, 2012, 18(9): 69-71.
DOI:
WANG Hai-tao, PENG Jin-long, Zhang Bin, et al. Extraction and Stability of Pigment from [J]. Chinese journal of experimental traditional medical formulae, 2012, 18(9): 69-71.DOI:
Objective: To investigate extraction methods of pigment from Hypericum japonicum by different solvents
and investigate effects of different factors on stability of pigment. Method: Pigment was extracted with 6 different solvents
stability of pigment was tested with pH
temperature
light
reducing agents and oxidants. Result: Extraction effect of pigment was optimum by ultrasonic extraction 10 min with 95% ethanol at 30 ℃
These pigment was unstable in light
strong acidity and alkaline
metal ions of Mg2+
Al3+ and other conditions.Food additives
reducing agents and oxidants had little effect on stability of pigment. Conclusion: These pigment had good stability
but it must prevent pigment using in light and avoid acidity and alkaline condition. Pigment from H. japonicum could be used as a good resource of natural plant pigment.