Effects of Half-Area Breathable Film on Preventing Expansion of Packaged-Cubed Radish Kimchi during Storage under Altering Temperature Conditions
2023
Park, S.Y. | Yun, S.M. | Kang, M.R. | Eun, J.B. | Chun, H.H.
In this study, changes in the quality and headspace O₂/CO₂ concentrations of cubed radish (Raphanus sativus L.) kimchi (CR-kimchi) packaged using multilayer airtight film (MAF), half-area breathable film (HABF), partial area breathable film (PABF), and one-way degassing valve-mounted film (ODVF) were investigated during storage under altering temperature conditions. The total lactic acid bacteria count in CR-kimchi samples stored for 6 days at 0℃, followed by 8 days at 6℃, increased to 7.8-7.9 log CFU/g, regardless of the packaging. The titratable acidity of the CR-kimchi samples increased to 0.6-0.7% during storage at 0℃ for 6 days and then at 6℃ for 8 days; it was maintained at 0.6-0.8% for 32 days of storage at -3℃. After 46 days of storage, the reduced sugar content of CR-kimchi packaged using MAF, HABF, PABF, and ODVF decreased to 26.8-30.3 mg/g, indicating no significant (p>0.05) differences. However, during storage, headspace CO₂ concentration and film volume were lower in the HABF treatment than in the control, PABF, and ODVF treatments, indicating that HABF packaging combined with supercooled (-3℃) storage can extend the optimal ripening period of CR-kimchi without packaging expansion during storage.
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