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KMID : 1134820120410070994
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Journal of the Korean Society of Food Science and Nutrition
2012 Volume.41 No. 7 p.994 ~ p.1001
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Quality Characteristics of Pre-processed Garlic during Storage according to Storage Temperature
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Park Young-Hee
Park Su-Jin
Han Gwi-Jung
Choe Jeong-Sook
Lee Jin-Young
Kang Min-Sook
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Abstract
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Quality changes of pre-processed garlic, peeled and chopped, were analyzed during storage at -18oC or 2oC for 30 days and at 20oC for 3 days only for chopped garlic. As storage time increased, Hunter L values decreased and a, b values increased, indicating browning regardless of the pre-process type and storage temperature. Decay and sprouting rates of peeled garlic during storage at 2oC significantly increased while those of peeled garlic were maintained during storage at -18oC. Weight loss of peeled garlic during storage was greater at -18oC than at 2oC. Hardness of peeled garlic rapidly decreased by half from 1.04 kg to 0.58 kg by freezing, and it did not significantly change during the storage period. Viable numbers of total aerobic bacteria of peeled and chopped garlic did not significantly change during the storage period at 2oC but were reduced at -18oC. Total aerobic bacterial count of chopped garlic stored at 20oC slightly increased during the storage period. Pyruvic acid content of chopped garlic was almost 2.5 times higher than that of peeled garlic at the initial stage (463.87 μmol/g and 190.52 μmol/g, respectively). As storage time increased, pyruvic acid content of peeled garlic increased while that of chopped garlic decreased. These results indicate that pre-process type and storage temperature affected the quality changes of garlic during storage.
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KEYWORD
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chopped garlic, peeled garlic, storage, pyruvic acid
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