Changes in nitrate and nitrite content of four vegetables during storage at refrigerated and ambient temperatures |
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Authors: | J. -C. Chung S. -S. Chou D. -F. Hwang |
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Affiliation: | a Bureau of Food and Drug Analysis, Department of Health, Executive Yuan, Taipei, Taiwan, ROCb Department of Food Science, National Taiwan Ocean University, Keeling 202, Taiwan, ROC |
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Abstract: | The nitrate and nitrite contents of four kinds of vegetables (spinach, crown daisy, organic Chinese spinach and organic non-heading Chinese cabbage) in Taiwan were determined during storage at both refrigerated (5 ± 1°C) and ambient temperatures (22 ± 1°C) for 7 days. During storage at ambient temperature, nitrate levels in the vegetables dropped significantly from the third day while nitrite levels increased dramatically from the fourth day of storage. However, refrigerated storage did not lead to changes in nitrate and nitrite levels in the vegetables over 7 days. |
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Keywords: | vegetables nitrate nitrite storage |
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