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The Qualities of Northern and Southern Ecotype Garlic Bulbs at Different Storage Temperature  

Bae, Ro-Na (National Instrumentation Center for Environmental Management, College of Agriculture and Life Sciences, Seoul National University)
Choi, Sun-Young (Postharvest Technology Division, National Horticultural Research Institute, Rural Development Administration)
Hong, Yoon-Pyo (Postharvest Technology Division, National Horticultural Research Institute, Rural Development Administration)
Publication Information
Food Science and Preservation / v.15, no.5, 2008 , pp. 635-641 More about this Journal
Abstract
This study was conducted to investigate the optimal sub-zero temperature for storage of two garlic cultivars, the northern ecotype 'Jaerae' and the southern ecotype 'Daeseo'. These cultivars of garlic bulbs were stored at different temperature (room temperature, $0^{\circ}C$, and $-4^{\circ}C$) conditions after predrying. Southern ecotype garlic showed higher weight loss than northern ecotype garlic. Northern ecotype garlic at $-4^{\circ}C$ exhibited less than 5% of weight loss during 10 month storage. Sprouting rate was higher in southern than in northern ecotype at room temperature storage. The value of injury by disease and insect was similar between southern ecotype and northern ecotype for 5 month storage, and then northern ecotype showed higher value of injury by disease and insect than southern ecotype. Hunter 'b' value of northern ecotype garlic was the lowest at $-4^{\circ}C$ storage. Northern ecotype garlic showed no cold injury at freezing point temperature storage. However, southern ecotype garlic had $0{\sim}5.3%$ cold injury occurrence at $-4^{\circ}C$ storage. Respiration and ethylene production exhibited the highest at room temperature storage, those had the slight increase at $0^{\circ}C$ and $-4^{\circ}C$ storages. Northern ecotype showed higher enzymatic pyruvic acid and fructan contents than those of southern ecotype. Enzymatic pyruvic acid content increased and fructan contents decreased during storage time.
Keywords
garlic bulb; quality; storage; temperature;
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Times Cited By KSCI : 3  (Citation Analysis)
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