Potential chemical markers for the identification of irradiated sausages.
Hydrocarbons, gas compounds, and off-odor volatiles were determined for irradiated (0 or 5 kGy) commercial sausages with different fat contents (16% and 29%) during a 60-d storage period at 4 °C. Total of 4 hydrocarbons (C14:1, C15:0, C16:2, and C17:1) were detected only in irradiated sausages: the amount of C16:2 was the highest, followed by C17:1, C14:1, and C15:0. The concentrations of hydrocarbons decreased significantly (P < 0.05) with storage, but were still detectable at the end of 60-d storage. Irradiated sausages produced significantly higher amounts of CO than the nonirradiated ones. CH(4) was detected only in irradiated sausages. Dimethyl disulfide was detected only in irradiated sausages and its concentration decreased significantly (P < 0.05) with storage. Fat content of sausages showed a significant effect on the production and retention of hydrocarbons, gas compounds, and sulfur volatiles in irradiated sausages during storage. Some hydrocarbons (C16:2, C17:1, C14:1, and C15:0), CH(4) , and dimethyl disulfide were only found in irradiated sausages indicating that these compounds can be used as potential markers for irradiated sausages.
Dept of Food Science & Technology, Kyungpook Natl Univ, Daegu 702-701, Korea.
Joong Ho
JH
Kwon
Kashif
K
Akram
Ki Chang
KC
Nam
Byungrok
B
Min
Eun Joo
EJ
Lee
Dong U
DU
Ahn
D000818:Animals; D003080:Cold Temperature; D004220:Disulfides / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D005514:Food Irradiation / Q000379:methods*; D061353:Food Storage; D006838:Hydrocarbons / Q000032:analysis*; D008461:Meat Products / Q000032:analysis*; D009812:Odorants / Q000032:analysis; D013552:Swine; D017392:Thiobarbituric Acid Reactive Substances / Q000032:analysis; D014422:Turkeys; D055549:Volatile Organic Compounds / Q000032:analysis*
D004220:Disulfides; D005227:Fatty Acids; D006838:Hydrocarbons; D017392:Thiobarbituric Acid Reactive Substances; D055549:Volatile Organic Compounds; C021181:dimethyl disulfide