Food Science and Biotechnology

, Volume 25, Issue 1, pp 115–119 | Cite as

Change in organosulfur compounds in onion (Allium cepa L.) during heat treatment

  • Sunyoung Kim
  • Sanghee Lee
  • Dongbin Shin
  • Miyoung Yoo
Research Note

Abstract

Changes in contents of the S-alk(en)yl-L-cysteine sulfoxides (ACSOs) methiin, isoalliin, propiin, and cycloalliin in onions after boiling, frying, steaming, and microwaving were investigated using Liquid Chromatography Electrospray Ionization-Tandem Mass Spectrometry (LC/ESI-MS/MS). ACSOs contents increased by 34.2-568.0% during frying, steaming and microwaving, whereas ACSOs contents decreased by 32.6-69.4% during boiling. The methiin level in heat-treated onions ranged from 0.18 to 0.47 g/100 g of dry weight (DW), and the cycloalliin concentration in heat-treated onions ranged from 0.31 to 3.50 g/100 g of DW. The amount of isoalliin in processed onions was 0.34-3.32 g/100 g of DW, and propiin was 0.15-1.67 g/100 g of DW. Changes in the ACSO concentrations were dependent on the cooking method. The quality of heat processed onions was evaluated.

Keywords

onion organosulfur compound HPLC LC/ESI-MS/MS 

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Copyright information

© The Korean Society of Food Science and Technology and Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Sunyoung Kim
    • 1
  • Sanghee Lee
    • 1
  • Dongbin Shin
    • 1
  • Miyoung Yoo
    • 1
  1. 1.Food Analysis CenterKorea Food Research InstituteSeongnam, GyeonggiKorea

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