Study on Quality Standards for Yinlian Oral Solution
Weilin Chen
Abstract
Weilin Chen
Abstract
OBJECTIVE: To establish the quality standards for Yinlian oral solution. METHODS: TLC was adopted to identify Radix Scutellariae, Rhizoma Coptidis, Fructus Forsythiae in Yinlian oral solution. HPLC was applied to determine the content of Baicalin in Yinlian oral solution, using Nova- Pak C18( 150mm× 4. 6mm, 4μ m) as column, the mixture of methanol- 0. 3% phosphoric acid ( 40∶ 60) as mobile phase, with flow rate set at 1. 0mL· min- 1 and detection wavelength at 276 nm. RESULTS: Radix Scutellariae, Rhizoma Coptidis and Fructus Forsythiae were clearly detected with TLC. The content of baicalin showed a good linear relationship at a range of 1. 68~ 16. 8μ g· mL- 1( r=0. 999 8) . The average recovery was 99. 06% ( RSD=0. 79% ) . CONCLUSIONS: The standard is accurate, reliable, and can be used for quality control of Yinlian oral solution.
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OBJECTIVE: To establish the quality standards for Yinlian oral solution. METHODS: TLC was adopted to identify Radix Scutellariae, Rhizoma Coptidis, Fructus Forsythiae in Yinlian oral solution. HPLC was applied to determine the content of Baicalin in Yinlian oral solution, using Nova- Pak C18( 150mm× 4. 6mm, 4μ m) as column, the mixture of methanol- 0. 3% phosphoric acid ( 40∶ 60) as mobile phase, with flow rate set at 1. 0mL· min- 1 and detection wavelength at 276 nm. RESULTS: Radix Scutellariae, Rhizoma Coptidis and Fructus Forsythiae were clearly detected with TLC. The content of baicalin showed a good linear relationship at a range of 1. 68~ 16. 8μ g· mL- 1( r=0. 999 8) . The average recovery was 99. 06% ( RSD=0. 79% ) . CONCLUSIONS: The standard is accurate, reliable, and can be used for quality control of Yinlian oral solution.
Key concepts: Baicalin, Chromatography, Quality standard, Radix (gastropod), Phosphoric acid, Chemistry, High-performance liquid chromatography, Content determination