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자료유형
학술저널
저자정보
저널정보
한국식품저장유통학회 Food Science and Preservation 한국식품저장유통학회지 제19권 제1호
발행연도
2012.2
수록면
12 - 18 (7page)

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In this study, 0, 20, 40, 60, 80, and 100% Ulmus pumila L. nonglutinous and glutinous sikhe were added to Ulmus pumila L. extracts for 15 days at 4℃, and for seven days at 25℃, to examine the extracts`` storage properties and sensory characteristics. The results are as follows: (1) On the changes of pH and acidity during storage of Ulmus pumila L. nonglutinous and glutinous sikhe, both of them showed lower pH values with lower additive Ulmus pumila L. extract contents. The pH value continuously decreased with a longer storage period, and the acidity was higher with a lower concentration of Ulmus pumila L. extract. (2) The total microbial cell count during storage of Ulmus pumila L. nonglutinous and glutinous sikhe at 4℃ was 4.6-5.0 log CFU/g at 0 day. The sikhe to which Ulmus pumila L. extract was not added increased to 8.8-9.0 log CFU/g on the seventh storage day, while the sikhye to which 80 and 100% Ulmus pumila L. extracts were added were 7.8 and 6.9 logCFU/g, respectively. Thus, the total cell count was lower with a higher additive content of Ulmus pumila L. extract. The total cell count of the sikhe to which 0-60% Ulmus pumila L. extracts reached the maximum value on the seventh storage day and did not show any change thereafter. The total cell count of the sikhe to which 80 and 100% Ulmus pumila L. extracts were added, however, reached the maximum value on the 10th to 13th storage days, thus showing that the storage period was increased by Ulmus pumila L. At 25℃, the total cell count was 4.6-5.0 log CFU/g on 0 day and continuously increased during the storage period. It had increased to 8.9-9.5 log CFU/g on the seventh storage day, and no differences were shown according to the additive content of Ulmus pumila L. extract. (3) On the sensory characteristics of Ulmus pumila L. nonglutinous and glutinous sikhe, the Ulmus pumila L. nonglutinous sikhe to which 20% Ulmus pumila L. extract was added showed the highest overall-acceptability value (4.23±0.95), whereas the Ulmus pumila L. glutinous sikhe to which 40% Ulmus pumila L. extract was added showed the highest overall-acceptability value (3.95±0.95). The sikhe to which 20 and 40% Ulmus pumila L. extracts were added showed significantly high taste, flavor, sweetness, and overall-preference values (p<0.05).

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