Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Effects of Cultivars and Storage Temperatures on Shelf-life of Leaf Lettuces

품종 및 저장온도가 상추 저장성에 미치는 영향

  • Published : 2007.08.28
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Abstract

Shelf-life and quality changes of four leaf lettuce cultivars packaged and stored at four different temperatures (0, 8, 16 and $24^{\circ}C$) were evaluated. Leaf lettuces were packaged in non-perforated polypropylene film (thickness 0.05 mm) bags. Weight loss, respiration rate, freshness degree, pigment content, and surface color were determined. At the storage temperature of $0^{\circ}C$, the weight loss, degree of freshness, pigment content, and change of surface color on packaged leaf lettuces showed no significant difference when compared with all other leaf lettuces. Meanwhile, an increase in storage temperature was observed with the quality changes of each flesh leaf lettuce. The leaf lettuces under storage conditions at $24^{\circ}C$ showed a difference in weight loss of the different types of leaf lettuces during a short storage period. However, there was no clear tendency in weight loss in different types of leaf lettuces as compared with each storage temperature. The rate of respiration and the contents of pigments in the four types of leaf lettuces also showed significant difference as the storage temperature increased.

상추를 포장하여 품종('적치마', '청치마', '적축면', '청축면')과 저장온도(0, 8, 16 및 $24^{\circ}C$)에 따른 저장성을 구명하고자 중량 감소율, 호흡률, 선도, 색소함량 및 색상차 등을 조사하였다. 저장온도 조건에 따라 품종별 차이를 달리 보여, 저온($0^{\circ}C$)에서는 중량감소 정도 및 선도, 호흡률 등에 의한 품종별 차이가 크지 않았으나, 저장 온도가 높아지면서 변화 정도와 차이가 커졌다. 중량감소 및 선도 변화에 있어서는 저온 저장 온도인 $0^{\circ}C$에서는 30일간 저장하여도 품종간의 차이가 크지 않았으나, 상추의 유통과정에서 조우 할 수 있는 온도 범위인 $8^{\circ}C$에서는 저장기간이 짧아지면서 품종에 따른 변화 정도가 인정되었으며, $24^{\circ}C$와 같은 높은 온도에서는 저장기간이 짧았음에도 불구하고 품종에 따른 중량 감소 정도에 차이를 보였다. 호흡률 또한 온도가 높아짐에 따라 증가하면서 품종에 따른 차이가 커졌으며 이는 색소함량 등에서도 같은 경향을 보였다. 이는 온도가 높은 저장 조건에서는 품종과 같은 내재된 요인에 의해 저장성의 차이를 보이지만 저장온도가 낮으면 이러한 요인이 억제되어 저장성의 차이가 발현되지 않은 것으로 생각된다.

Keywords

References

  1. Lee, J.S., Choi, J.W., Chung, D.S., Lim, C.I., Seo, T.C., Do, G.L. and Chun, C. (2005) Effect of lettuce cultivars and cultivation methods on growth, quality and shelf-life. Kor. J. Hort. Sci. Technol., 23, 12-18
  2. Yang, Y.J., Park, K.W. and Jeong, J.C. (1991) The influence of pre- and postharvest factor on shelf life and quality of leaf lettuce. Kor. J. Food Sci. Technol., 23, 133-140
  3. Lee, J.S., Chung, D.S., Choi, J.W., Jo, M.A., Lee, Y.S. and Chun, C. (2006) Effects of storage temperature and packaging treatment on the qulity of leaf lettuce. Kor. J. Food Preserv., 13, 8-12
  4. Kader, A.A. (2002) Postharvest technology of horticultural crops. 3rd ed. p.39-47. Univ. Calif. Agr. Nat. Resources, Oakland, USA
  5. Hertog, M.L.A.T.M., Jeoren, L., Nico. S. and Bart, M.N. (2007) The impact of biological variation on postharvest behavior: the case of dynamic temperature conditions. Postharvest Bio. Technol., 43, 183-192 https://doi.org/10.1016/j.postharvbio.2006.09.014
  6. Ministry of agriculture & forestry (2006) Agricultural and forestry statical yearbook. p.102
  7. 이정명 (2003) 신고 채소 원예 각론, 향문사, p.373-388
  8. 윤형권, 홍성식 (2004) 숨어 있는 채소 ․ 과일의 매력, 원예연구소, p.48-49
  9. Gross, K., Wang, C.Y. and Saltveit, M.E. (2002) The commercial storage of fruit, vegetables, and florist and nursery stocks. USDA Agr. Hndbk. 66 (http://www.ba.ars.usda.gov/hb66/index.html)
  10. Hunter Lab (2001) Hunter L, a, b, versus CIE 1976 $L^{*}, a^{*}, b^{*}$.  Application Note, 13, 1-4 (http://www.hunterlab.com /color_theory.php)
  11. Jeong, J.C., Woo, P.K. and Joon, Y.Y. (1990) Influence of packaging with high-density polyethylene film on the quality of leaf lettuce during low temperature storage. J. Kor. Soc. Hort. Sci., 31, 219-225
  12. Phyo, H.K. (1983) Necessity and direction of quality control on horticultural products. J. Kor. Soc. Hort. Sci., 24, 259-264
  13. Kim, B.S., Lee, H.J., Park, H.W. and Cha, H.S. (2003) Effects of respiration and transpiration vates on weight loss of various fruit. Kor. J. Food Preserv., 10, 142-146
  14. Shin, K.H., Park, J.H., Choi, J., Han, J.S. and Lim, K.C. (2001) Effects of storage temperatures and water contents on the quality in crude green tea. J. Kor. Tea Soc., 7, 15-25
  15. Youn, J.T., Kwon, H.J., Hong, G.P. and Ahn, M.S. (1999) The changes of nutrient composition in the edible potato varieties during storage. Kor. J. Hort. Sci. & Technol., 17, 467-469
  16. Park, K.W. (1983) Effects of fertilization irrigation and harvesting period on the quality of vegetable crops. J. Kor. Soc. Hort. Sci., 24, 325-337
  17. Kwon, J.H., Ching, H.W., Lee, J., Park, N.Y., Lee, G.D. and Kim, J.S. (1999) Effect of storage on the quality stability of garlic bulbs. Kor. J. Postharvest Sci. Technol., 6, 137-142
  18. Bae, R.N. and Chung, D.S. (2003) Chilling injury temperature and changes of quality during storage or marketing in leaf lettuce. Kor. J. Hort.Sci. Technol., 21, 190-193
  19. Kim, C.B., Lee, S.H., Kim, J.S., Yoon, J.T., and Kim, T. (1999) Effects of packing materials on the keeping freshness of chinese chives at low temperature storage. Kor. J. Postharvest Sci. Technol., 6, 270-275
  20. Chang, K.H., Lee, D.H., Kim, I.S., Kang, I.K. and Byun, J.K. (1999) Changes in the cell wall components during the softening in peach fruits. J. Kor. Soc. Hort. Sci., 40, 355-358