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Mothed of Analysis of Curcumin

Content of curcumin
Accurately weigh turmeric oleoresin sample, soluble in ethanol and is set to 100 ml volumetric flask, then the liquid be diluted 100 times, the aborbance of a dilution in ethanol is measured at 420nm in a 1cm cuvette using ethanol as reference.
A * 100
E1% 1cm 425nm
= ────
M
A:
sample spectrophotometry
M: sample weigh


UV Content =E1% 1cm 425nm/1607
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