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http://dx.doi.org/10.7235/hort.2015.14135

Optimized Controlled Atmosphere Regimen for Storage of Fresh Fischer's Ligularia (Ligularia fischeri Turcz.) Leaves  

Park, Yoon-Moon (Department of Food Science and Biotechnology, Andong National University)
Kim, Taewan (Department of Food Science and Biotechnology, Andong National University)
Kim, Hyun-Seok (Department of Food Science and Biotechnology, Andong National University)
Kim, Tae Hoon (Department of Food Science and Biotechnology, Daegu University)
Park, Yoo Jin (Cheongsong Agriculture Technology & Extension)
Publication Information
Horticultural Science & Technology / v.33, no.3, 2015 , pp. 375-382 More about this Journal
Abstract
A controlled atmosphere (CA) regimen was optimized during 3 consecutive harvest seasons as the basis of practical modified atmosphere packaging (MAP) storage for quality maintenance and extension of storage potential of fresh Ligularia fischeri leaves. Leaves were harvested in April or May and forced-air cooled to $4^{\circ}C$ before punch-hole MAP (control, where gas concentrations were same as air) and CA treatments. CA regimens adjusted stepwise during 3 experimental years were: 1 and 3% $O_2$, respectively combined with 5 and 10% $CO_2$ in the first year, 3% $O_2$ fixed in combination with 0, 2.5, and 5% $CO_2$ in the second year, and 3% $O_2$ fixed in combination with 2.5 and 5% $CO_2$ in the third year. In the first year, higher incidence of black discoloration was observed with the reduction of respiration under 10% $CO_2$ CA conditions regardless of $O_2$ levels at 1 or 3%. In the second and third year, the incidence of the disorder seemed not to be clearly relevant to CA conditions showing slightly higher incidence only after 4- or 5-week storage + 5-day shelf life. Although texture and appearance quality were maintained better under the 3% $O_2$ + 2.5% $CO_2$condition after 4-week storage + 5-day shelf life, effects of CA on the extension of storage period was slight. Overall results indicated that Ligularia fischeri leaves are very susceptible to $CO_2$ injury. $CO_2$ concentration should be adjusted below 2.5% for safe and effective CA or MAP storage to maintain quality even during short-term storage.
Keywords
browning; critical concentration; modified atmosphere(MA); respiration rate; storage disorder; storage potential;
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Times Cited By KSCI : 4  (Citation Analysis)
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