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Featured researches published by Oh-Jin Kwon.


Journal of Food Protection | 1998

Gamma irradiation and ozone treatment for inactivation of Escherichia coli O157:H7 in culture media

Myung-Woo Byun; Oh-Jin Kwon; Hong-Sun Yook; Kyong Su Kim

A study was conducted to investigate the reduction and elimination of Escherichia coli O157:H7 by the effects of gamma irradiation and ozone treatment. Log phase cells were found to be more sensitive to gamma irradiation than stationary phase cells. E. coli O157:H7 was found to be considerably more resistant to irradiation at -18 degrees C than at 20 degrees C. The D values for this organism for treatment with ozone in tryptic soy agar were higher than those for treatment with ozone in phosphate buffer. Gamma irradiation at a dose of 1.5 kGy or ozone treatment at a concentration of 3 to 18 ppm for 20 to 50 min was required to assure the elimination of E. coli O157:H7.


Journal of Food Science and Nutrition | 1997

Effects of Ionizing Energy and Ozone Treatments on the Microbial Decontamination and Physicochemical Properties of Aloe Powders and Bee Pollen

Hong-Sun Yook; Young-Jin Chung; Jung-Ok Kim; Oh-Jin Kwon; Sung Kim; Myung-Woo Byun


International Journal of Food Science and Technology | 1997

Comparative effects of gamma irradiation and ozone treatment on hygienic quality of aloe powders

Myung-Woo Byun; Hong-Sun Yook; Oh-Jin Kwon


Applied Biological Chemistry | 1986

The Characteristics of Bacteria Isolated from Ordinary Korean Soy Sauce and Soybean Paste

Oh-Jin Kwon; Jong-Kyu Kim; Yung-Gun Chung


Applied Biological Chemistry | 2000

The Quality Changes of Chungugjang Prepared by Bacillus sp. CS-17 during Fermentation Time

Dong-Hwa Son; Oh-Jin Kwon; Won-Dae Ji; Ung-Kyu Choi; O-Jun Kwon; Eun-Joung Lee; Young-Je Cho; Won-Seup Cha; Yung-Gun Chung


Korean Journal of Food Science and Technology | 1997

Effects of Gamma-Ray and Heat Treatment on Sterilization of Escherichia coli O157:H7

Oh-Jin Kwon; Hong-Sun Yook; Seong-Ai Kim; Myung-Woo Byun


Applied Biological Chemistry | 1996

Growth conditions of symbiosis for production of single cell protein

Hae-Kyoung Lee; Yung-Gun Chung; Oh-Jin Kwon


Applied Biological Chemistry | 1998

Conditions for the Pigment Production by Bacillus sp. CS-17 and Antibacterial Activity of Pigment Concentrated Extracts

Dong-Hwa Son; Oh-Jin Kwon; Ung-Kyu Choi; Yung-Gun Chung


Korean Journal of Food Science and Technology | 1997

Elimination of Escherichia coli O157:H7 Contaminated in Frozen Beef by Electron Beam Irradiation

Oh-Jin Kwon; Jae-Seung Yang; Seong-Il Lim; Myung-Woo Byun


Korean Journal of Food Science and Technology | 1997

Effects of Gamma Irradiation and Ozone Treatment on Microbial Decontamination and Fatty Acid Compositions of Aloe and Pollen Powders

Hong-Sun Yook; Young-Jin Chung; Jung-Ok Kim; Oh-Jin Kwon; Myung-Woo Byun

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Hong-Sun Yook

Chungnam National University

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Young-Jin Chung

Chungnam National University

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Ung-Kyu Choi

Korea National University of Transportation

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Young-Je Cho

Kyungpook National University

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