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Changes of Chlorophyll Contents in Spinach by Growth Periods and Storage  

Lee Mi-Hee (Department of Human Ecology, Yeungnam University)
Han Jae-Sook (Division of Food Service Industry, Uiduk University)
Kozukue Nobuyuki (Division of Food Service Industry, Uiduk University)
Publication Information
Korean journal of food and cookery science / v.21, no.3, 2005 , pp. 339-345 More about this Journal
Abstract
This study was carried out to determine the changes of chlorophyll contents in spinach during growth stages and storage with two packaging materials. The chlorophyll contents increased to a maximum level in the spinach leaves after 35 days of planting, while the level in the roots extremely decreased and that in the stems did not change during the growth period. The total chlorophyll content was higher in the leaves than that in the stems and roots. The ratios of chlorophyll a/b in the leaves and stems were almost similar to those reported for spinach elsewhere. When stored for 1, 3, and 5 days without packaging, the remaining percentage of chlorophyll was $96.29\%,\;90.79\%\;and\;85.74\%$, respectively, at $5^{\circ}C,\;and\;82.75,\;44.63,\;33.07\%$, respectively, at $20^{\circ}C$. The chlorophyll contents of the spinach stored in polyethylene bags were significantly higher than of that those without packaging and of that packaged with newspaper during storage. From the results, it was found that spinach packaged in polyethylene bags suppressed the degradation of chlorophyll and maintained the freshness during low temperature storage and that the chlorophyll contents increased during the growth period.
Keywords
Spinach; chlorophyll; growth period; storage; packaging method;
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