The Identification and Comparison of the Flavonoids in the Flowers of Campanula Rapunculoides L. and Campanula Americana L.

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dc.contributor.author Buckles, Walter Eugene
dc.date.accessioned 2009-03-20T19:31:35Z
dc.date.available 2009-03-20T19:31:35Z
dc.date.issued 1975-07
dc.identifier.other 1975 .B855
dc.identifier.uri http://hdl.handle.net/2092/888
dc.description 28 leaves. Advisor: Dr. S. Lane Wilson en
dc.description.abstract The problem. The purpose of this study was to identify and compare the flavonoids found in the flowers of Campanula rapunculoides L. and C. americana L. Procedure. Flavonoids were extracted in 1% HCl-methanol solution and concentrated on a rotary vacuum evaporator. Filter paper chromatography was used to separate and purify the pigments. Both crude and purified pigments were hydrolyzed and tests run to gain information about the aglycones and attached sugars. A spectrophotometer was used to record the absorption spectra of purified pigments. Findings. Two anthocyanins which appear to be glycosides of delphinidin and another flavonoid which may be a 7,8-dihydroxyflavanone were found in both C. rapunculoides and C. americana. Vitexin and luteolin were found in C. americana but not in C. rapunculoides. C. rapunculoides contains an unidentified, blue florescing flavonoid not found in C. americana. Conclusions. It was shown that C. rapunculoides and C. americana share three flavonoids while there are two in C. americana and one in C. rapunculoides which are not shared. Recommendations. Further work is needed to isolate and identify the sugar attachments on the flavonoids. Other species of Campanula need to be examined to show their relationship to C. americana and C. rapunculoides. en
dc.format.extent 1795852 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.publisher Drake University en
dc.relation.ispartofseries Drake University, School of Graduate Studies;1975
dc.subject Flavonoids en
dc.subject Flowers en
dc.subject Plant pigments en
dc.subject Campanula rapunculus en
dc.subject Campanula en
dc.subject Chromatographic analysis en
dc.title The Identification and Comparison of the Flavonoids in the Flowers of Campanula Rapunculoides L. and Campanula Americana L. en
dc.type Thesis en


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