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KMID : 1134820120410111611
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Journal of the Korean Society of Food Science and Nutrition
2012 Volume.41 No. 11 p.1611 ~ p.1618
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Standardization of Manufacturing Process and Storage Condition for Pre-processed Foodstuffs (Pre-processed Namul; Peeled Balloon Flower Roots and Parboiled Bracken)
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Park Sun-Hyun
Noh Bo-Young
Han Kyu-Jai
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Abstract
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Peeled balloon flower roots and parboiled bracken are pre-processed foodstuffs commonly used in the institutional food service. This study was conducted to establish the suitable manufacturing process for these foodstuffs and the optimal storage condition during distribution in the market. The most suitable manufacturing process was developed by surveying the manufacturing factories that produce these foodstuffs. Samples were collected by selecting a site among the surveyed manufacturing factories and storing them at different temperatures (4, 10, 20oC). The resulting changes in microbiological, physicochemical, and organoleptic qualities depending on the storage period (1, 2, 3, 4, 5, 7, 10 days) were investigated. The number of general bacteria in balloon flower roots at the beginning of the storage period was 5.26 log CFU/g and the number in the 4oC storage group remained unchanged until the 3rd day, but then increased to 7.63 log CFU/g at the 4th day, and then gradually increased up to the 7th day. However, in the 10 and 20oC storage groups, the number was rapidly increased to 7.42 log CFU/g and 7.86 log CFU/g, respectively, at the 2nd day. The parboiled bracken samples presented a similar trend. For physicochemical quality changes, the pH and hardness were rapidly decreased in the 20oC storage group. The organoleptic quality was favorably evaluated (5～6 points out of 9 points) up to the 5th day in the 4oC storage group but the overall acceptability was rapidly decreased from the 2nd day in the other storage temperature groups. These results confirmed the optimal storage condition for these pre-processed foodstuffs as being less than 3 days at 4oC.
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KEYWORD
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central kitchen, balloon flower, bracken, manufacturing process, storage condition
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