Gas chromatography ‐ isotope ratio mass spectrometry measurements of some carboxylic esters from different apple varieties

Karl, Volker; Dietrich, Armin; Mosandl, Armin

doi:10.1002/pca.2800050109

Cited by 17 publications

(2 citation statements)

References 9 publications

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“…The scarce information available from literature about the IRMS data of 2 reveals δ 2 H VSMOW values ranging from -261 to -323‰ (origin not specified) (18). For 2 from apple fruit (a C3-plant), δ 13 C VPDB ratios of -30.9 to -35.0‰ have been reported (19).…”

Section: Resultsmentioning

confidence: 99%

On-Line Gas Chromatography Combustion/Pyrolysis Isotope Ratio Mass Spectrometry (HRGC-C/P-IRMS) of Pineapple (Ananas comosus L. Merr.) Volatiles

Preston

Richling

Elss

et al. 2003

J. Agric. Food Chem.

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By use of extracts prepared by liquid-liquid separation of the volatiles from self-prepared juices of pineapple fruits (Ananas comosus) (n = 14) as well as commercial pineapple recovery aromas/water phases (n = 3), on-line capillary gas chromatography-isotope ratio mass spectrometry was employed in the combustion (C) and the pyrolysis (P) modes (HRGC-C/P-IRMS) to determine the delta(13)C(VPDB) and delta(2)H(VSMOW) values of selected pineapple flavor constituents. In addition to methyl 2-methylbutanoate 1, ethyl 2-methylbutanoate 2, methyl hexanoate 3, ethyl hexanoate 4, and 2,5-dimethyl-4-methoxy-3[2H]-furanone 5, each originating from the fruit, the delta(13)C(VPDB) and delta(2)H(VSMOW) data of commercial synthetic 1-5 and "natural" (biotechnologically derived) 1-4 were determined. With delta(13)C(VPDB) data of pineapple volatiles 1-4 varying from -12.8 to -24.4 per thousand, the range expected for CAM metabolism was observed. Compound 5 showed higher depletion from -20.9 to -28.6 per thousand. A similar situation was given for the delta(2)H(VSMOW) values of 3-5 from pineapple ranging from -118 to -191 per thousand, whereas 1 and 2 showed higher depleted values from -184 to -263 per thousand. In nearly all cases, analytical differentiation of 1-5 from pineapple and natural as well as synthetic origin was possible. In general, natural and synthetic 1-5 exhibited delta(13)C(VPDB) data ranging from -11.8 to -32.2 per thousand and -22.7 to -35.9 per thousand, respectively. Their delta(2)H(VSMOW) data were in the range from -242 to -323 per thousand and -49 to -163 per thousand, respectively.

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Section: Resultsmentioning

confidence: 99%

On-Line Gas Chromatography Combustion/Pyrolysis Isotope Ratio Mass Spectrometry (HRGC-C/P-IRMS) of Pineapple (Ananas comosus L. Merr.) Volatiles

Preston

Richling

Elss

et al. 2003

J. Agric. Food Chem.

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“…122 Breas et al highlighted the value of GC‐C‐IRMS for the rapid and convenient analysis of vanillin and mint hexenol 123. Karl et al performed chirospecific measurements of isotope ratios of 2‐methylbutanoates from apple flavours 124…”

Section: Food Sciencementioning

confidence: 99%

Compound-specific isotope analysis. Application to archaelogy, biomedical sciences, biosynthesis, environment, extraterrestrial chemistry, food science, forensic science, humic substances, microbiology, organic geochemistry, soil science and sport

Lichtfouse

2000

Rapid Commun. Mass Spectrom.

123

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The isotopic composition, for example, 14C/12C, 13C/12C, 2H/1H, 15N/14N and 18O/16O, of the elements of matter is heterogeneous. It is ruled by physical, chemical and biological mechanisms. Isotopes can be employed to follow the fate of mineral and organic compounds during biogeochemical transformations. The determination of the isotopic composition of organic substances occurring at trace level in very complex mixtures such as sediments, soils and blood, has been made possible during the last 20 years due to the rapid development of molecular level isotopic techniques. After a brief glance at pioneering studies revealing isotopic breakthroughs at the molecular and intramolecular levels, this paper reviews selected applications of compound‐specific isotope analysis in various scientific fields. Copyright © 2000 John Wiley & Sons, Ltd.

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Quality Control: Parts 6.1 – 6.2.2.5

Grüb¹,

Schmidt

Werner³

et al. 2007

Flavourings

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Gas chromatography ‐ isotope ratio mass spectrometry measurements of some carboxylic esters from different apple varieties

Cited by 17 publications

References 9 publications

On-Line Gas Chromatography Combustion/Pyrolysis Isotope Ratio Mass Spectrometry (HRGC-C/P-IRMS) of Pineapple (Ananas comosus L. Merr.) Volatiles

On-Line Gas Chromatography Combustion/Pyrolysis Isotope Ratio Mass Spectrometry (HRGC-C/P-IRMS) of Pineapple (Ananas comosus L. Merr.) Volatiles

Compound-specific isotope analysis. Application to archaelogy, biomedical sciences, biosynthesis, environment, extraterrestrial chemistry, food science, forensic science, humic substances, microbiology, organic geochemistry, soil science and sport

Quality Control: Parts 6.1 – 6.2.2.5

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