125 Effect of Postharvest Curing on Respiration and Quality in Garlic Bulbs During Cold Storage

in HortScience
Authors: Y.J. Yang and K.A. Lee1
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  • 1 Div. of Horticultural Science & Environmental Artchitecture, Sangmyung University, Chonan, Chungnam, 330-180, Korea

Garlic (Allium stivum L. cv. `Seosan') grown in Kyungbuk, Korea were harvested on June 1999 and dried in the field for 2 to 3 days. Bulbs were selected for uniformity in size and maturity and divided into two groups. One group was further dried in the shade at 25 °C for curing before storage at 0 °C. The other group was stored at 0 °C immediately without additional drying. Respiration of garlic bulbs dried additionally for 3 months was low, ranging from 1.5 to 3.0 CO2 mL/kg per h for 95 days in storage; ethylene was not detected until 60 days in storage. Non-curing samples showed rapid increase of carbon dioxide production after 50 days of storage, this might be related to incidence of fungal decay. Ethylene showed maximum value at 45 days in storage, thereafter remained level of 5.6-6.3 μL/kg per h. All treatments did not show sprouting during storage period, but incidence of decay was significantly reduced by additional drying. The beneficial effect of curing for 3 months at 25 °C was maintenance of low water content in garlic bulbs, which resulted in reduction of decay.

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