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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2008-2-22
pubmed:abstractText
A dynamic ultrasonic extraction (DUE) coupled with on-line detection by spectrophotometry is proposed for the determination of total flavonoids (calculated against scutellarin) in Scutellaria barbata D. Don. The extraction was performed in a common self-made extraction vessel put in an ultrasonic bath and a peristaltic pump was used to deliver the extraction solvent. Several experimental parameters of DUE, including flow rate and concentration of extraction solvent, ultrasonic power and sample amount, were optimized. In this work an on-line method was provided with the advantages of minimum sample amount (5 mg), on-line monitoring the extraction process and time saving (12.5 min). Compared with off-line method, the proposed method would be more convenient for obtaining continuous measurements and rapid optimization of the extraction process.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1873-4324
pubmed:author
pubmed:issnType
Electronic
pubmed:day
10
pubmed:volume
610
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
217-23
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Determination of total flavonoids in Scutellaria barbata D. Don by dynamic ultrasonic extraction coupled with on-line spectrophotometry.
pubmed:affiliation
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China.
pubmed:publicationType
Journal Article