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- W2383532835 abstract "Objective To optimize the extraction and enrichment process of phenolic acids in Danggui( Radix Angelicae Sinensis). Methods The experiment was carried out taken ferulic acid as indicator according to the condition in L9( 34) orthogonal design table for investigating the influences of ethanol concentration,solvent amount and duration and frequency of extraction on extraction results and optimizing extraction process. The enrichment process was optimized through investigating the types of macroporous resins,ratio of diameter to height,pH and concentration of sample solution,maximum volume of sample,washed volume,ethanol concentration and volume for edulcoration and elution and flow velocity. Results The final preferred extraction and enrichment process of phenolic acids in Danggui was as follows: 8 times amount of 70% ethanol,reflux extracting for 2 times,1 hour each time,combining and concentrating extracts to 0. 5 g / mL,centrifugating for 30 min( 4 500 r / min),supernatant putting in HPD-400 macroporous resins,sample amount being 4. 5 g / mL,adsorption flow velocity being0. 5 mL / min,ratio of diameter to height being 1: 7,distilled water( 3 BV) and 20% ethanol( 2 BV) for edulcoration,flow velocity of edulcoration being 1 mL / min,50% ethamol( 6 BV) for elution,and flow velocity of elution being 2 mL / min. Conclusion The content of ferulic acid is 151. 8 mg / g in concentrates after enriched with the extraction and enrichment process optimized in the paper,and the process is stable and viable." @default.
- W2383532835 created "2016-06-24" @default.
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- W2383532835 date "2013-01-01" @default.
- W2383532835 modified "2023-09-28" @default.
- W2383532835 title "Extraction and enrichment process of phenolic acids in Danggui (Radix Angelicae Sinensis)" @default.
- W2383532835 hasPublicationYear "2013" @default.
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