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Thermal Resistance Characteristics of Bacillus cereus, Escherichia coli O157:H7, and Listeria monocytogenes in a Multi-grain Soy Milk Product
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 Title & Authors
Thermal Resistance Characteristics of Bacillus cereus, Escherichia coli O157:H7, and Listeria monocytogenes in a Multi-grain Soy Milk Product
Kim, Nam Hee; Koo, Jae Myung; Rhee, Min Suk;
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 Abstract
This study determined the thermal resistance of Bacillus cereus, Escherichia coli O157:H7, and Listeria monocytogenes in multi-grain soymilk and proposes processing conditions that meet the national standard for retort food products in Korea. D and z values were calculated from thermal inactivation kinetic curves after heating at 55, 60, and . The D value for B. cereus at was the highest (22.8 min), followed by that for E. coli O157:H7 (18.8 min) and L. monocytogenes (17.6 min). At , the order was L. monocytogenes (), E. coli O157:H7 (3.0-0.3 min), and B. cereus (1.2-0.3 min). The z values for these species were 5.2, 5.5, and , respectively. The Korean national standard for retort food products was achieved by thermal processing at for 0.3-2.2 min. This study provides useful data for ensuring both the microbiological safety and product quality of multi-grain soymilk products.
 Keywords
multi-grain soymilk;foodborne pathogenic bacteria;thermal resistance;retort food product;
 Language
English
 Cited by
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