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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1983-6-10
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pubmed:abstractText |
The formation of a blue chromogen between sodium borohydride-treated lantadene A (22 beta-angeloyloxy-3-oxoolean-12-en-28-oic acid) and acetic anhydride-sulfuric acid (9:1) formed the basis of a spectrophotometric method for its quantitation. The chromogen had a broad absorption maximum (lambda max) at 630-645 nm. The optimum amount of sodium borohydride for lantadene A reduction was 1 mg/mg lantadene A in methanolic solution. The chromogen was stable for 5, 7, and 26 min after reaction at 25, 18, and 0 degree C, respectively. The method is convenient, sensitive, and reproducible. The amount of lantadene A in the leaves of Lantana camara collected in the month of May quantitated by the present method was found to be 13.6 mg/g dry weight of the leaves.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Oleanolic Acid,
http://linkedlifedata.com/resource/pubmed/chemical/Plant Extracts,
http://linkedlifedata.com/resource/pubmed/chemical/Sapogenins,
http://linkedlifedata.com/resource/pubmed/chemical/Toxins, Biological,
http://linkedlifedata.com/resource/pubmed/chemical/rehmannic acid
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0003-2697
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
1
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pubmed:volume |
128
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
474-7
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pubmed:dateRevised |
2005-11-17
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pubmed:meshHeading | |
pubmed:year |
1983
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pubmed:articleTitle |
Spectrophotometric determination of lantadene A, 22 beta-angeloyloxy-3-oxoolean-12-en-28-oic acid.
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pubmed:publicationType |
Journal Article
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