The effects of high pressure treatment on the microflora and storage of kimchi were investigated. In a bacterial suspension, numbers of Lactobacillus plantarum were reduced by 6 logs by 500 MPa, at 25 ЊC for 10 min. Kimchi juice did not alter the rate of inactivation of lactic acid bacteria by high pressure treatment. There was no change in the texture of kimchi subjected to a pressure of 400 MPa, but an increase in cutting force was observed at 600 MPa. When kimchi was pressurized at 400 MPa for 10 min at 25 ЊC and subsequently stored at 20 ЊC for 4 weeks, the total number of viable cells stayed at 10 3 CFU mL Ϫ1 . High pressure treatment above 400 MPa prevented excessive acidification that typically occurs during the extended storage of kimchi. The inflation of pouches as a result of accumulated carbon dioxide was also prevented by high pressure treatment. Although colour changes were accelerated by high pressure treatment, this study demonstrates that high pressure treatment can be used to control overripening during the distribution and storage of kimchi products.
Bulgogi (Korean-traditional barbequed beef) is one of the most popular Korean traditional foods. China, the world's most populous country, is a huge market that has the biggest market potential in the world. The purpose of the study was to understand the preference of Chinese consumers for bulgogi products in comparison to that of Korean consumers. Sensory characteristics of bulgogi samples that differed in levels of main marinating ingredients were examined using descriptive analysis and results were connected to hedonic information collected from Chinese (n=72) and Korean (n=76) participants. Bulgogi samples were prepared in ready-to-heat form. Chinese consumers' overall acceptability was negatively affected by sweet taste, and green onion, black pepper, cooked onion, and sesame flavors. Chinese consumers tended to report that tested bulgogi samples were 'too sweet', while Korean consumers thought that sweetness levels were 'just-right'. The results implied the influence of cultural expectation playing a role in consumer acceptability.
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