Source:http://linkedlifedata.com/resource/pubmed/id/17630763
| Subject | Predicate | Object | Context |
|---|---|---|---|
| pubmed-article:17630763 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:17630763 | lifeskim:mentions | umls-concept:C0699771 | lld:lifeskim |
| pubmed-article:17630763 | lifeskim:mentions | umls-concept:C0449416 | lld:lifeskim |
| pubmed-article:17630763 | lifeskim:mentions | umls-concept:C2603343 | lld:lifeskim |
| pubmed-article:17630763 | lifeskim:mentions | umls-concept:C0051385 | lld:lifeskim |
| pubmed-article:17630763 | lifeskim:mentions | umls-concept:C0053463 | lld:lifeskim |
| pubmed-article:17630763 | pubmed:issue | 16 | lld:pubmed |
| pubmed-article:17630763 | pubmed:dateCreated | 2007-8-1 | lld:pubmed |
| pubmed-article:17630763 | pubmed:abstractText | In addition to the already available information on the authenticity of alpha- (1) and beta-ionone (2) from plant tissues, there is an interest in the stable isotope data of 1 and 2 available by synthesis from citral and acetone, as European Union regulations, in contrast to the United States and other countries, do not allow a product to be declared as 'natural' that has been chemically synthesized (e.g., by using a natural catalyst) from natural educts. Analyses performed by on-line capillary gas chromatography-isotope ratio mass spectrometry in the combustion and pyrolysis modes (HRGC-C/P-IRMS) as well as by elemental analyzers (EA-C/P-IRMS) measuring delta(13)C(V)-PDB and delta(2)H(V)-SMOW values provide for the first time isotope data of such 'natural' 1 and 2 as well as of synthetic and 'ex plant' alpha-ionol (3). The isotope data recorded for synthesized 1 and 2 reflected the influence of the origin of the used citral, whereas that of acetone was less remarkable. For instance, 'natural' 1 ex citral from lemongrass showed, as expected for a C4 plant, an enriched delta(13)C(V)-PDB value of -18.5 per thousand. In addition, the use of synthetic citral resulted in an enriched delta(2)H(V)-SMOW value of -43 per thousand, whereas with citral ex Litsea cubeba and ex lemongrass values of -242 and -232 per thousand, respectively, were recorded. IRMS analyses of 'natural' 2 revealed delta(13)C(V)-PDB and delta(2)H(V)-SMOW values that were nearly identical to that recorded for 'natural' 1. As to both 1 and 2, variations of synthesis conditions led to distinct changes in the delta(13)C(V)-PDB but not the delta(2)H(V)-SMOW values. Synthetic 3 showed delta(13)C(V)-PDB and delta(2)H(V)-SMOW values of -24.5 and -184 per thousand, respectively. These data differed from those found in raspberry fruit under study (n = 8), that is, ranging from -33.6 to -36.6 per thousand for delta(13)C(V)-PDB and from -200 to -225 per thousand for delta(2)H(V)-SMOW. The values determined additionally for 1 and 2 in raspberry fruit samples ranged from -30.3 to -35.1 per thousand and from -176 to -221 per thousand for delta(13)C(V)-PDB and delta(2)H(V)-SMOW, respectively, and thus corresponded to the already known literature information. | lld:pubmed |
| pubmed-article:17630763 | pubmed:language | eng | lld:pubmed |
| pubmed-article:17630763 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:17630763 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:17630763 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:17630763 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:17630763 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:17630763 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:17630763 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:17630763 | pubmed:month | Aug | lld:pubmed |
| pubmed-article:17630763 | pubmed:issn | 0021-8561 | lld:pubmed |
| pubmed-article:17630763 | pubmed:author | pubmed-author:SchreierPeter... | lld:pubmed |
| pubmed-article:17630763 | pubmed:author | pubmed-author:KempfMichaelM | lld:pubmed |
| pubmed-article:17630763 | pubmed:author | pubmed-author:PrestonChrist... | lld:pubmed |
| pubmed-article:17630763 | pubmed:author | pubmed-author:CajaMaría... | lld:pubmed |
| pubmed-article:17630763 | pubmed:issnType | lld:pubmed | |
| pubmed-article:17630763 | pubmed:day | 8 | lld:pubmed |
| pubmed-article:17630763 | pubmed:volume | 55 | lld:pubmed |
| pubmed-article:17630763 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:17630763 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:17630763 | pubmed:pagination | 6700-4 | lld:pubmed |
| pubmed-article:17630763 | pubmed:meshHeading | pubmed-meshheading:17630763... | lld:pubmed |
| pubmed-article:17630763 | pubmed:meshHeading | pubmed-meshheading:17630763... | lld:pubmed |
| pubmed-article:17630763 | pubmed:meshHeading | pubmed-meshheading:17630763... | lld:pubmed |
| pubmed-article:17630763 | pubmed:meshHeading | pubmed-meshheading:17630763... | lld:pubmed |
| pubmed-article:17630763 | pubmed:meshHeading | pubmed-meshheading:17630763... | lld:pubmed |
| pubmed-article:17630763 | pubmed:meshHeading | pubmed-meshheading:17630763... | lld:pubmed |
| pubmed-article:17630763 | pubmed:year | 2007 | lld:pubmed |
| pubmed-article:17630763 | pubmed:articleTitle | Flavor authentication studies of alpha-ionone, beta-ionone, and alpha-ionol from various sources. | lld:pubmed |
| pubmed-article:17630763 | pubmed:affiliation | Lehrstuhl für Lebensmittelchemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. | lld:pubmed |
| pubmed-article:17630763 | pubmed:publicationType | Journal Article | lld:pubmed |