Articles

DETERMINATION OF ASCORBIC ACID CONTENT OF LEAFY ASIAN VEGETABLES DURING STORAGE

Article number
877_153
Pages
1123 – 1128
Language
English
Abstract
The objective of this study was to evaluate the changes in the ascorbic acid (AA) content of fresh-cut Asian leafy vegetables during storage.
Mizuna, Mibuna, and Chinese mustard were chosen for this study because of their growing importance in recent years.
Each of these vegetables is prized for its high nutritional value and relatively short production time.
Storage conditions simulated a packed salad stored in a home refrigerator (10°C), in order to study the changes in AA levels which take place in these products after purchase by the consumer.
The analyses of the AA were performed by HPLC after 0, 2, 5 and 7 days of storage.
The average levels of AA observed in the three chosen species varied from 59 to
72 mg.100 g-1 of fresh product.
The highest values were seen in Chinese mustard.
After 7 days of storage the average amount of AA had decreased by 33-53% in the vegetables investigated.
This experiment shows that these Asian leafy vegetables, when stored in the given conditions, can be classified as medium or medium-low retentive for ascorbic acid.

Publication
Authors
T. Kopta, R. Pokluda
Keywords
vitamin C, Mizuna, Mibuna, Chinese mustard, postharvest storage
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