KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Determination of Greening and Shelf Life of Potato Based on Washing and Storage Temperature Conditions

감자의 세척유무 및 저장온도에 따른 녹화 및 상품성 유지 기간 구명

  • Kim, Su Jeong (Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Sohn, Hwang Bae (Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Hong, Su Young (Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Nam, Jung Hwan (Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Chang, Dong Chil (Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Suh, Jong Taek (Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Yul Ho (Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration)
  • Received : 2016.10.29
  • Accepted : 2016.12.28
  • Published : 2017.03.31
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Abstract

Potato greening determines the shelf life and affects the marketability of this tuber. Various stresses during handling and storage interact to affect the tuber's physiological status and can affect the rate of greening. This study investigated the effects of storage temperature on tuber greening and shelf life in unwashed and washed potatoes of the cultivar Superior. Physiological and biochemical changes were examined during 15 days at room temperature ($23{\pm}2^{\circ}C$) under cool-white fluorescent light after storage for 1 month at different temperatures ($4^{\circ}C$, $20^{\circ}C$). Hunter a values were negative (-) for washed potatoes after 3 days (-0.8) and 15 days (-2.5) at room temperature following 1 month of storage at $4^{\circ}C$ while positive (+) values were observed for unwashed potatoes after 15 days at room temperature. The Hunter ${\Delta}E$ values of washed potatoes previously stored at $4^{\circ}C$ for 1 month increased after 3 days at room temperature compared with those of unwashed potatoes. The total chlorophyll content of washed potatoes was higher than that of unwashed potatoes. The highest correlation was observed between the Hunter ${\Delta}E$ value and Hunter a value (-0.93506), while a positive correlation coefficient (0.89806) was observed between greening criteria and Hunter ${\Delta}E$ value by using colorimetry. We conclude, therefore, that there is a biosynthetic link between temperature-induced chlorophyll accumulation and tuber greening in storage.

감자에서 녹화는 유통과정에서 괴경의 상품성을 좌우하는 매우 중요한 품질 지표이다. 본 연구는 우리나라 대표감자 품종인 '수미'의 수확후 세척유무 및 보관온도에 따른 녹화와의 관련성을 비교 분석하고자 수행되었다. Hunter a값은 세척하지 않은 감자(대조구)에 비해 세척한 감자가 a값의 변화가 심하였으며, 특히 세척감자의 경우 고온($20^{\circ}C$)보다 저온($4^{\circ}C$) 보관할 경우 실온저장 3일부터 -0.8로 시작하여 15일에 -2.5로 떨어져 녹화가 심하였다. 색차값 역시 세척하지 않은 감자(대조구)보다 세척감자에서 실온저장 3일부터 급격히 증가하였다. 저장기간이 길어짐에 따라 엽록소 함량이 모든 처리구에서 증가하였는데, 저온($4^{\circ}C$)에서 1개월 보관한 후 실온에 저장한 세척감자에서 저장 12일에 $26.7mg{\cdot}g-1$로 가장 함량이 많았다. 괴경녹화와 각 녹화평가 요인의 상관성을 피어슨 상관분석한 결과, 엽록소 함량은 Hunter a값와 b값과는 부의 상관관계를 보였고, 색차값과는 정의 상관관계를 보였다. 따라서, 색도, 색차 및 엽록소 함량 등의 결과를 바탕으로 녹화는 세척유무 및 보관온도에 영향을 받는 것으로 판단되었다.

Keywords

References

  1. Chang, D. C., J. C. Jeong, C. S. Park, Y. H. Yun, and S. Y. Kim. 2003. Determination of greening in potato tubers using a chlorophyll analysis. Kor. J. Hort. Sci. Technol. 21:42.
  2. Cho, H. M., Y. E. Park, J. H. Cho, and S. Y. Kim. 2003. Historical review of land race potatoes in Korea. J. Kor. Soc. Hort. Sci. 44:838-845.
  3. Choi, W. Y., K. M. Cho, S. Kim, J. H. Jeong, S. H. Lee, K.B. Lee, G.H. Lee, and K.H. Park. 2015. Effect of PE film mulching and irrigation method on the growth, yield and antioxidant activity for potatoes grown in winter season at saemangeum reclaimed land. Kor. J. Crop Sci. 60:63-69. https://doi.org/10.7740/kjcs.2014.60.1.063
  4. Edwards, E. J. and A. H. Cobb. 1997. Effect of temperature on glycoalkaloid and chlorophyll accumulation in potatoes (Solanum tuberosum L. cv. King Edward) stored at low photon flux density, including preliminary modeling using an artificial neural network. J. Agric. Food Chem. 45: 1032-1038. https://doi.org/10.1021/jf9607324
  5. Food and Drug Administration (FDA). 2009. Food code, U.S. public health service. U.S. Department of Health and Human Services, VA, USA.
  6. Grunenfelder, L., L. K. Hiller, and N. R. Knowles. 2006. Color indices for the assessment of chlorophyll development and greening of fresh market potatoes. Postharvest Biol. Tech. 40:73-81. https://doi.org/10.1016/j.postharvbio.2005.12.018
  7. Gull, D. D. 1960. Chlorophyll and solanine changes in tubers of Solanum tuberosum induced by fluorescent light, and a study of solanine toxicology by bioassay. Ph.D., Cornell University of Food Technology, Ithaca, NY.
  8. Ha, J. H., S. D. Ha, Y. S. Kang, K. P. Hong, and D. H. Bae. 2007. Microbiological, nutritional, and rheological quality changes in frozen potatoes during storage. Kor. J. Food Sci. Technol. 39:663-668.
  9. Hwang, T. Y. and K. D. Moon. 2006. Quality characteristics of fresh-cut potatoes with natural antibrowning treatment during storage. Kor. J. Food Sci. Technol. 38:183 -187.
  10. Jeong, J. C., S. J. Kim, S. Y. Hong, J. H. Nam, H. B. Sohn, Y. H. Kim, and M. Mekapogu. 2015. Growing environment influence the anthocyanin content in purpleand red-fleshed potatoes during tuber development. Kor. J. Environ. Agric. 60:231-238.
  11. Jeong, J. C., Y. H. Yun, D. C. Chang, C. S. Park, and S. Y. Kim. 2003. Processing quality of potato (Solanum tuberosum L.) tubers as influenced by soil and climatic conditions. Kor. J. Environ. Agric. 22:261-265. https://doi.org/10.5338/KJEA.2003.22.4.261
  12. Korea Food service & Drug Administration (KFDA). 2010. Code of Food. Korea Food & Drug Administration, Seoul, Korea.
  13. Kolasa, K. M. 1993. The potato and human nutrition. Am. Potato J. 70:375-384. https://doi.org/10.1007/BF02849118
  14. Kim, J. G., S. T. Choi, and D. H. Bae. 2009. Effect of heat treatment and dipping solution combination on the quality of peeled potato 'Jopung'. Kor. J. Hort. Sci. Technol. 27:256-262.
  15. Kim, S. J., H. B. Sohn, M. Mekapogu, O. K. Kwon, S. Y. Hong, J. H. Nam, Y. I. Jin, D. C. Chang, J. T. Suh, J. C. Jeong, and Y. H. Kim. 2016. Quality characteristics influenced by different packaging materials in washed potatoes through an integrated washing system. Kor. J. Food Sci. Technol. 48:247-255. https://doi.org/10.9721/KJFST.2016.48.3.247
  16. Kwon, O. Y., M. Y. Kim, C. W. Son, X. W. Liu, H. C. Kim, W. K. Yoon, H. M. Kim, and M. R. Kim. 2008. Protein and amino acid composition of domestic potato cultivars. J. Kor. Soc. Food Sci. Nutr. 37: 117-123. https://doi.org/10.3746/jkfn.2008.37.1.117
  17. Lee, Y. J., J. C. Jeong, Y. H. Yoon, S. Y. Hong, S. J. Kim, Y. I. Jin, J. H. Nam, and O. K. Kwon. 2012. Evaluation of quality characteristics and definition of utilization category in Korean potato (Solanum tuberosum L.) cultivars. Kor. J. Crop Sci. 57:271-279. https://doi.org/10.7740/kjcs.2012.57.3.271
  18. Ministry of Education, Science and Technology (MEST). 2010. Guideline of school food service sanitation. Ministry of Education, Science and Technology, Seoul, Korea. p. 39.
  19. Ministry for Food, Agriculture, Forestry and Fisheries (MFAFF). 2013. Production and supply plan of major crop seeds in Summer for 2013. Ministry of Agriculture, Forestry, and Fisheries. p. 57.
  20. Muraja-Fras, J., M. Krsnik-Rasol, and M. Wrischer. 1994. Plastid transformation in greening potato tuber tissue. J. Plant Physiol. 114:58-63.
  21. Park, K. J., J. W. Jeong, D. S. Kim, and S.W. Jeong. 2007. Quality changes of peeled potato and sweet potato stored in various immersed liquids. Kor. J. Food Preserv. 14:8-17.
  22. Park, W. H., J. A. Song, J. S. Lee, and S. U. Lee. 2009. Effect of different light exposure on the development of chlorophylls and glycoalkaloids in potato tubers. Kor. Food. Service Asso. 3:61-72.
  23. Pavlista, A. 2001. Green potatoes: The poroblem and the solution. NebGuide online, G01-1437-A.
  24. Percival, G. C. 1999. The influence of light upon glycoalkaloid and chlorophyll accumulation in potato tubers (Solanum tuberosum L.). Plant Sci. 145:99-107. https://doi.org/10.1016/S0168-9452(99)00081-3
  25. Reeves, A. 1988. Varietal differences in potato tuber greening. Am. Potato J. 65:651-658. https://doi.org/10.1007/BF02854833
  26. Rural Development Administratin (RDA). 2014. The Potato: Guidance of agricultural technology-31. Rural Development Administration, Suwon, Korea. pp. 24-120.

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