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Influence of cultivar and harvest time on the amounts of isoalliin and methiin in leek (Allium ampeloprasum var. porrum)

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Biotechnology for a sustainable economy (Bio-Economy)
Abstract
Extracts of 31 leek cultivars were analyzed using liquid chromatography−tandem mass spectrometry (HPLC-MS/ MS) to determine the distribution of the two most abundant S-alk(en)yl-L-cysteine sulfoxides (ACSOs) in leek, that is, isoalliin and methiin. The isoalliin concentration of the white shaft and green leaves of the 31 leek cultivars varied from 15 to 53 mg/g dry weight (dw) and from 9 to 45 mg/g dw, respectively, whereas the methiin concentration varied from 3 to 16 mg/g dw and from 1 to 10 mg/g dw, respectively. Leek cultivar and tissue had an effect on the ACSO amounts. Cultivars Artico and Apollo F1 rated highest for the mean isoalliin and methiin concentration, respectively. In general, the whole leek plant of the winter leek cultivars contained a significantly higher ACSO amount than the summer and autumn cultivars. To determine whether this difference was attributed to the cultivar background or time of harvest, ACSOs were also quantitated in nine leek hybrids at four different stages during the next growth season. The amounts of ACSO changed significantly during the growth season, indicating the importance of harvest at specific time moments, although there was still an effect of cultivar on the ACSO amounts.
Keywords
harvest time, genetic diversity, HPLC-MS/MS, methiin, leek, isoalliin, FLAVOR PRECURSORS, S-ALK(EN)YL-L-CYSTEINE SULFOXIDES, CYSTEINE SULFOXIDES, S-ALK(EN)YLCYSTEINE SULFOXIDES, ORGANOSULFUR COMPOUNDS, GENUS ALLIUM, ONION FLAVOR, CEPA L, L., IDENTIFICATION

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Citation

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Chicago
Bernaert, Nathalie, Lien Goetghebeur, Hervé De Clerq, Marc De Loose, Els Daeseleire, Els Van Pamel, Erik Van Bockstaele, and Bart Van Droogenbroeck. 2012. “Influence of Cultivar and Harvest Time on the Amounts of Isoalliin and Methiin in Leek (Allium Ampeloprasum Var. Porrum).” Journal of Agricultural and Food Chemistry 60 (44): 10910–10919.
APA
Bernaert, N., Goetghebeur, L., De Clerq, H., De Loose, M., Daeseleire, E., Van Pamel, E., Van Bockstaele, E., et al. (2012). Influence of cultivar and harvest time on the amounts of isoalliin and methiin in leek (Allium ampeloprasum var. porrum). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 60(44), 10910–10919.
Vancouver
1.
Bernaert N, Goetghebeur L, De Clerq H, De Loose M, Daeseleire E, Van Pamel E, et al. Influence of cultivar and harvest time on the amounts of isoalliin and methiin in leek (Allium ampeloprasum var. porrum). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY. 2012;60(44):10910–9.
MLA
Bernaert, Nathalie, Lien Goetghebeur, Hervé De Clerq, et al. “Influence of Cultivar and Harvest Time on the Amounts of Isoalliin and Methiin in Leek (Allium Ampeloprasum Var. Porrum).” JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 60.44 (2012): 10910–10919. Print.
@article{3127520,
  abstract     = {Extracts of 31 leek cultivars were analyzed using liquid chromatography\ensuremath{-}tandem mass spectrometry (HPLC-MS/
MS) to determine the distribution of the two most abundant S-alk(en)yl-L-cysteine sulfoxides (ACSOs) in leek, that is, isoalliin and methiin. The isoalliin concentration of the white shaft and green leaves of the 31 leek cultivars varied from 15 to 53 mg/g dry weight (dw) and from 9 to 45 mg/g dw, respectively, whereas the methiin concentration varied from 3 to 16 mg/g dw and from 1 to 10 mg/g dw, respectively. Leek cultivar and tissue had an effect on the ACSO amounts. Cultivars Artico and Apollo F1 rated highest for the mean isoalliin and methiin concentration, respectively. In general, the whole leek plant of the winter leek cultivars contained a significantly higher ACSO amount than the summer and autumn cultivars. To determine whether this difference was attributed to the cultivar background or time of harvest, ACSOs were also quantitated in nine leek hybrids at four different stages during the next growth season. The amounts of ACSO changed significantly during the growth season, indicating the importance of harvest at specific time moments, although there was still an effect of cultivar on the ACSO amounts.},
  author       = {Bernaert, Nathalie and Goetghebeur, Lien and De Clerq, Herv{\'e} and De Loose, Marc and Daeseleire, Els and Van Pamel, Els and Van Bockstaele, Erik and Van Droogenbroeck, Bart},
  issn         = {0021-8561},
  journal      = {JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY},
  language     = {eng},
  number       = {44},
  pages        = {10910--10919},
  title        = {Influence of cultivar and harvest time on the amounts of isoalliin and methiin in leek (Allium ampeloprasum var. porrum)},
  url          = {http://dx.doi.org/10.1021/jf302132a},
  volume       = {60},
  year         = {2012},
}

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