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Determination of Hypericin Content in Extract of Hypericum by Dual-Wavelength Spectrophotometry / 中成药
Chinese Traditional Patent Medicine ; (12)1992.
Article in Chinese | WPRIM | ID: wpr-570139
ABSTRACT

Objective:

Hypericin content was determined in the extract of hypericum by dual-wavelength spectrophotometry.

Methods:

The wavelengths were adopeted 589nm~647nm against a methanol blank.

Results:

The linear correlation was observed within the range of 1.30~29.75?g/ml(r=0.9998). The average recovery of hypericin was 102.32%(n=6), RSD was 1.08%.

Conclusion:

the result was exact, method was simple and convenient .

Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Chinese Traditional Patent Medicine Year: 1992 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Chinese Traditional Patent Medicine Year: 1992 Type: Article