FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (1): 234-238.

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Study on Off-flavour Compounds of Bread with Irradiation Treatment

 FAN  Ping, QIAN  Ping, HE  Jin-Feng, HU  Xiao-Song   

  1. 1.College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; 2.Military Supplies Research Institute, General Logistics Department, The People’s Liberation Army, Beijing 100010, China
  • Online:2008-01-15 Published:2011-07-28

Abstract: The off-flavour compounds of irradiated bread were detected with a combinated method of solid phase microextraction (SPME) and gas chromatography-mass spectroscopy (GC-MS) methodology. The effects of irradiation on producing off-flavor compounds of bread with different improved treatments were also investigated. Results showed that the main volatile com-pounds of irradiated bread are 1,3-bis(1,1-dimethylethyl)-benzene, ethyl octanonate, hexanal, 2-pentyl-furan, etc. In all these components, the kinds and the contents of aromatic hydro-carbon, aldehydes, alkyls and alkenes increased significantly. Their mutual effects were likely to be responsible for the off-flavour of the irradiated bread. With the reduction of irradiation dosage, the contents of main off-flavour compounds decrease markedly, but the effects of other improved treatments are insignificant.

Key words: irradiation, bread, off-flavor, treatment