Linked Life Data

18576988

Source:http://linkedlifedata.com/resource/pubmed/id/18576988

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2008-6-25
pubmed:abstractText
A solid-phase microextraction (SPME) technique has been applied to the determination of the volatile compounds, including diterpenoids and lactones, in cooked beef fat. The ability of static-headspace SPME to extract lactones was disappointing, regardless of the type of SPME fiber or the temperature used. Dynamic-headspace SPME extraction with 50-/30-microm divinylbenzene-Carboxen on a polydimethylsiloxane fiber at 100 degrees C, by contrast, enabled the analysis of volatiles, including delta-lactones, gamma-lactones, and diterpenoids, with 50-/30-microm divinylbenzene-Carboxen on a polydimethylsiloxane fiber at 100 degrees C. Fifty-three compounds were identified from only 0.20 g of rendered beef fat, and 76% of these showed reliable peak size repeatability: the coefficient of variation was less than 10% on the total ion chromatograms obtained from gas chromatography-mass spectrometry (GC-MS) analysis. Some lactones showed higher CV values (>10%), but single-ion mode GC-MS analysis reduced them to 10% or less. In a study of beef samples available to the Japanese market, our analytical procedure revealed significantly higher levels of 1-hexanol, octadecane, ethyl tetradecanoate, gamma-nonalactone, but lower levels of delta-decalactone, delta-dodecalactone, and neophytadiene, in Japanese Black cattle than in beef imported from Australia.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1750-3841
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
73
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
C420-5
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Analysis of volatile compounds in beef fat by dynamic-headspace solid-phase microextraction combined with gas chromatography-mass spectrometry.
pubmed:affiliation
Grazing and Meat Production Research Team, Tohoku National Agricultural Research Center, Morioka, Iwate, 020-0198, Japan. akiraw@affrc.go.jp
pubmed:publicationType
Journal Article