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Title
Regional differences in onion bulb quality and nutrient content, and the correlation between bulb characteristics and storage loss
Publication Date
2016
Call Number
A:PS
Summary
Many onion growers and researchers assert that differences in soil type, agricultural practices, weather, and duration of prolonged onion cultivation. This study evaluates the bulb quality of onions grown in different regions and determines the correlations between bulb characteristics and postharvest loss during cold and ambient storage. Soil and onion bulbs were collected from six different regions in Korea during the growing season of 2011-2012. The fresh weight, dry matter content, and carbon (C), sulfur and magnesium contents of the onion bulbs were greatly affected by the location. (TSS) and total flavonoids (TF), and the highest total soluble solids (TSS) and total flavonoids (TF). Bulbs originating from Jecheon had the lowest pyruvic acid (PA), total phenolics and TF. Storage loss of bulbs from the different regions was similar in refrigerated storage, but differing in ambient temperature storage. Bulb fresh weight was positively correlated with scale thickness (r = 0.617) and cold storage loss (CSL; r = 0.398). Dry matter content was positively correlated with C (r = 0.958) and TF (r = 0.256) contents, while it was negatively correlated with CSL (r = -0.424). CSL was primarily affected by the amount of dry matter, C, and PA contents of the bulbs, while ambient storage loss was primarily influenced by the amount of TSS.
Journal Citation
34(6):807-817, KOREAN JOURNAL OF HORTICULTURAL SCIENCE & TECHNOLOGY
Contact Information
harvest@worldveg.org
Record Appears in
Research > Published Articles