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Extraction technology and content determination of emodin extracts from Polygonum cuspidatum Sieb. et Zucc. in Mount Emei.

Jie MI, Xingguo Zhang, Cheng Fang-xu, Liu WanCang, Feng Shi

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Abstract

[Objective] The study was to investigate the yield and the content of the emodin extracts from Polygonum cuspidatum in Mount Emei.[Method] Using the content and purity of emodin as the indices,we employed the 95% ethanol-water-saturated chloroform method to isolate emodin,alkaline of different pH gradient to extract and HPLC to measure the emodin content.[Result] The emodin content in crude emodin extract reached 94.90%,and the yield of emodin extracted from P.cuspidatum was 0.62%.[Conclusion] The 95% ethanol-chloroform method has stable extraction technology and performs high purity of emodin extracted from P.cuspidatum,which could be used as the extraction technology.The results provided a scientific basis for the exploitation,utilization and quality control of P.cuspidatum resource in Mount Emei.

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[Objective] The study was to investigate the yield and the content of the emodin extracts from Polygonum cuspidatum in Mount Emei.[Method] Using the content and purity of emodin as the indices,we employed the 95% ethanol-water-saturated chloroform method to isolate emodin,alkaline of different pH gradient to extract and HPLC to measure the emodin content.[Result] The emodin content in crude emodin extract reached 94.90%,and the yield of emodin extracted from P.cuspidatum was 0.62%.[Conclusion] The 95% ethanol-chloroform method has stable extraction technology and performs high purity of emodin extracted from P.cuspidatum,which could be used as the extraction technology.The results provided a scientific basis for the exploitation,utilization and quality control of P.cuspidatum resource in Mount Emei.

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Available abstract

[Objective] The study was to investigate the yield and the content of the emodin extracts from Polygonum cuspidatum in Mount Emei.[Method] Using the content and purity of emodin as the indices,we employed the 95% ethanol-water-saturated chloroform method to isolate emodin,alkaline of different pH gradient to extract and HPLC to measure the emodin content.[Result] The emodin content in crude emodin extract reached 94.90%,and the yield of emodin extracted from P.cuspidatum was 0.62%.[Conclusion] The 95% ethanol-chloroform method has stable extraction technology and performs high purity of emodin extracted from P.cuspidatum,which could be used as the extraction technology.The results provided a scientific basis for the exploitation,utilization and quality control of P.cuspidatum resource in Mount Emei.

Key concepts: Emodin, Extraction (chemistry), Chloroform, Chemistry, Chromatography, Polygonum, Yield (engineering), Traditional medicine

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Extraction technology and content determination of emodin extracts from Polygonum cuspidatum Sieb. et Zucc. in Mount Emei. — Research Paper | ScholarLens