Effect of Different Temperatures on the storability of Salsola komarovi Iljin and Suaeda maritima L. Dum. in MA Storage

저장온도가 MA 저장한 수송나물(Salsola komarovi Iljin)과 해홍나물(Suaeda maritima L. Dum.)의 MA저장성에 미치는 영향

  • Received : 2010.08.20
  • Accepted : 2010.09.18
  • Published : 2010.09.30

Abstract

This study was carried out to compare the storability of Salsola komarovi Iljin and Suaeda maritima L. Dum which stored at different storage temperatures in MA storage. These plants that had grown in greenhouse packed with $50\;{\mu}m$ ceramic film and then stored in $2^{\circ}C$, $10^{\circ}C$, and $25^{\circ}C$ temperature. The fresh weight loss both plants was less than 1% in all temperature treatments. The highest fresh weight loss showed at $25^{\circ}C$ among storage temperature treatments in Salsola komarovi Iljin between plants. The highest carbon dioxide contents in package showed at $25^{\circ}C$ among storage temperature treatments in Salsola komarovi Iljin between plants, and at $2^{\circ}C$ and $10^{\circ}C$ temperature treatments remained less than 1%. Oxygen contents in package both plants showed the highest level at $2^{\circ}C$ temperature treatment, but Salsola komarovi Iljin showed less oxygen contents than Suaeda maritima L. Dum. Although there was no significant difference ethylene contents in package between $2^{\circ}C$ and $10^{\circ}C$ temperature treatments, the higher showed in $10^{\circ}C$ than $2^{\circ}C$ temperature treatments. The ethylene contents in package both plants were roughly $20\;{\mu}L{\cdot}L^{-1}$ and the higher was in Suaeda maritima L. Dum than Salsola komarovi Iljin at $2^{\circ}C$. As increasing the storage temperature, the contents of carbon dioxide and ethylene in package also increased in both plants. The carbon dioxide and ethylene contents of Salsola komarovi Iljin showed a significant difference between $2^{\circ}C$ and $10^{\circ}C$ temperature treatments, but Suaeda maritima L. Dum did not show. The shelf life of Salsola komarovi Iljin based on visual quality was 14 days at $2^{\circ}C$ temperature treatment and 7.5 days at $10^{\circ}C$ temperature treatment. However, the shelf life of Suaeda maritima L. Dum did not show a significant difference between $2^{\circ}C$ temperature treatment that was 11 days, and $10^{\circ}C$ temperature treatment that was 9.5 days. Considering visual quality and gas contents in package, Suaeda maritima L. Dum might appear chilling injury at $2^{\circ}C$ temperature treatment.

염생식물 중 생체로 이용되고 있는 수송나물(Salsola komarovi Iljin)과 해홍나물(Suaeda maritima L. Dum.)의 상품화를 위해 포장 판매 및 저장이 동시에 가능한 MAP(modified atmosphere package)의 저장성을 몇가지 온도에서 비교하였다. 온실에서 재배한 수송나물과 해홍나물을 $50{\mu}m$(ceramic) 필름으로 포장하여 $2^{\circ}C$, $10^{\circ}C$, $25^{\circ}C$에 저장하였다. 저장중 생체중 감소는 모두 1% 미만이었는데, 역시 상온에서 가장 빠르게 감소하였으며, 수송에서 감소폭이 컸다. 포장재내 산소 농도는 저장온도별로는 $2^{\circ}C$에서 가장 높게 유지되었으며, $25^{\circ}C$에서는 수송이 해홍보다 낮은 농도를 보였다. 포장재내 이산화탄소 농도는 산소농도와 반대로 저장온도별로는 $25^{\circ}C$에서 가장 높았으며, 식물별로는 수송에서 높았는데 두 식물 모두 $2^{\circ}C$$5^{\circ}C$에서는 1% 이하로 유지되었다. 포장재내 에틸렌 농도는 $10^{\circ}C$에서 $2^{\circ}C$보다 높았으나, 통계적인 유의성은 없었다. $10^{\circ}C$에서 에틸렌 농도는 두 식물 모두 $20{\mu}L{\cdot}L^{-1}$으로 같은 수준으나, $2^{\circ}C$에서는 해홍이 다소 높았다. 온도에 따른 포장재내 이산화탄소와 에틸렌 농도는 저장온도가 높을수록 높았는데, 수송나물에서는 $2^{\circ}C$$10^{\circ}C$간 통계적 유의성이 있는 차이를 보인 반면, 해홍나물의 경우 그 차이에 통계적 유의성이 인정되지 않았다. 관능검사로 실시한 외관상 품질은 3점까지 상품성을 인정하였는데, 수송나물의 경우 상품성인 인정된 저장일수가 $24^{\circ}C$에서는 3일, $10^{\circ}C$에서는 7.5일 $2^{\circ}C$에서는 14일이었고, 해홍나물은 $24^{\circ}C$에서는 3.5일, $10^{\circ}C$에서는 9.5일 $2^{\circ}C$에서는 11일이었다. 외관상 품질 변화와 포장재내 이산화탄소와 에틸렌 농도로 볼 때 해홍나물의 경우 $2^{\circ}C$의 저온에서 저장성이 $10^{\circ}C$와 차이가 없어 저온장해가 의심되었다.

Keywords

References

  1. Kader, A.A. 2002. Postharvest technology of horticultural crops. 3rd edition. University of California, Division of Agriculture and Natural Resources. USA.
  2. Kang, H.M. and K.W. Park. 1999. Chilling stress alleviation effect of pre-harvest heat treatment during cultivation of mature green tomato at low temperature storage. J. Kor. Soc. Hort. Sci. 40:647-651 (in Korean).
  3. Kang H.M., K.W. Park, and M.E. Saltveit. 2002. Elevated growing temperatures during the day improve the postharvest chilling tolerance of greenhouse-grown cucumber (Cucumis sativus) fruit. Postharvest Biology and Technology 24:49-57 (in Korean). https://doi.org/10.1016/S0925-5214(01)00129-6
  4. Kang, H.M., K.W. Park, I.S. Kim, and J.H. Won. 2005. Effects of postharvest heat treatment on alleviation chilling injury and improvement storability of oriental melon. J. Bio-Environ. Cont. 14:137-143 (in Korean).
  5. Kang, H.M., H.J. Jung, I.L. Choi, and J.H. Won. 2009. Effect of Storage Temperature and Packing Materials on Storability of Fresh Salicornia europaea L. J. Bio- Environ. Cont. 18:475-480 (in Korean).
  6. Kang, H.M. and I.S. Kim. 2007. Comparison of Storability of Some Sprout Vegetables in MA Storage. J. Bio-Environ. Cont. 16:415-149 (in Korean).
  7. Kays, J.S. and E.R. Paull. 2004. Postharvest Biology. Exon Press, Athens, GA. USA.
  8. Kim, S.T. and M.G. Chung. 1995. Genetic variation and population structure in Korean populations of sand dune species Salsola komarovi (Chenopodiaceae). J. Plant Res. 108:195-203. https://doi.org/10.1007/BF02344344
  9. Kim, Y.S., M.R. Huh, and J.C. Park. 2001. Effects of culture media and seawater on growth and mineral concentrations in glasswort (Salicornia herbacea). Kor. J. Hort. Sci. & Technol. 19:342-347 (in Korean).
  10. Lee, T.B. 2003. Coloured Flora of Korea Vol. I. HyangMunSa. Seoul (in Korean).
  11. Lu, D.H., M. Zhang, S.J. Wang, J.L. Cai, C.P. Zhu, and X. Zhou, 2009. Effects of modified atmosphere packaging with different sizes of silicon gum film windows on Salicornia bigelovii Torr. storage. J. Sci. Food Agric. 89:1559-1564. https://doi.org/10.1002/jsfa.3624
  12. Moon, Y.G., I.S. Jang, and M.S. Heo. 2008. Antibacterial activities of Suaeda maritima hot water extracts. Journal of Life Science 18:668-673 (in Korean). https://doi.org/10.5352/JLS.2008.18.5.668
  13. Paull, R.E. and N.J. Chen, 2008, Postharvest handling and storage of the edible red seaweed Gracilaria. Postharvest Biology and Technology 48:302-308. https://doi.org/10.1016/j.postharvbio.2007.12.001
  14. Park, K.W., H.M. Kang, D.M. Kim, and H.W. Park. 1999. Effects of the packaging films and storage temperatures on modified atmosphere storage of ripe tomato. J. Kor. Soc. Hort. Sci. 40:643-646 (in Korean).
  15. Park, K.W., H.M. Kang, and C.H. Kim. 2000. Comparison of storability on film sources and storage temperature for fresh Japanese mint in MA storage. J. Bio. Env. Con. 9:40-46 (in Korean).