Effects of gamma-irradiation before and after cooking on bacterial population and sensory quality of Dakgalbi

Autor: Beom-Seok Song, Nak-Yun Sung, Jin-Kyu Park, Jong-Heum Park, Young Min Yoon, Ju-Woon Lee, Jae Hun Kim, Hong-Sun Yook, Jae-Nam Park, Ji-Hye Lee, Meixu Gao, Yohan Yoon
Rok vydání: 2012
Předmět:
Zdroj: Radiation Physics and Chemistry. 81:1121-1124
ISSN: 0969-806X
DOI: 10.1016/j.radphyschem.2012.01.031
Popis: The purpose of this study was to compare the effect of gamma irradiation on the total bacterial population and the sensory quality of Dakgalbi irradiated before and after cooking. Fresh chicken meat was cut into small pieces and used to prepare Dakgalbi. For the preparation of Dakgalbi cooked with gamma-irradiated chicken meat and sauce (IBC), raw chicken meat and Dakgalbi sauce were irradiated and then stir-fried. For the preparation of Dakgalbi irradiated after cooking with raw chicken meat and sauce (IAC), raw chicken meat and Dakgalbi sauce were first cooked and subsequently irradiated. Under the accelerated storage condition of 35 °C for 7 days, bacteria in IBC were below the detection limit (1 log CFU/g) on day 1 but were detected on day 2 and gradually increased hereafter. In IAC, on the other hand, bacteria were not detected at all. Evaluation of sensory quality also decreased on both samples. However, IAC showed a better trend. Our results indicate that IAC protocol was a more effective method for reducing bacterial growth in Dakgalbi.
Databáze: OpenAIRE