Morphological Characters and Color of Mungbean Sprouts Affected by Water Supplying on the Harvest Day

수확당일의 관수 유무에 따른 숙주나물의 형태 및 색상 변화

  • Published : 2008.03.31

Abstract

Traditionally mungbean (Vigna radiata L.) sprouts has been stored after dehydration to decrease their decay. The study was done to determine the effect of watering for final 12 hours of harvest day on morphological characters and color of mungbean sprouts. The seeds of cv. Zhong Lu 1 were soaked in 50 ppm BA solution immediately before 4 hour aeration and then cultured for 6 days, when water-supplied for final 12 hours or not. After packaged with PE envelops, the sprouts stored 5 days at $8^{\circ}C$, and their morphological characters, fresh and dry weights, and colors were measured everyday. Compared to non-water supplied, water supplied sprouts had thicker hypocotyl diameter in middle part, and higher total fresh weight due to increment of cotyledon and hypocotyl ones although the two sprouts did nearly same in other characters. Only nonwater supplied sprouts showed higher color b value in hypocotyl than water supplied ones although there were not significant differences between them in other color-related characters, meaning that the latter ones were more rapidly decayed during their storage. In non-water supplied sprouts, number of lateral roots, hypocotyl and root lengths, total fresh weight, brightness of hypocotyl and root was decreased since 3 days after storage but cutting resistance of hypocotyl was done since 5 days.

전래적으로 자가 소비용 숙주나물은 저장기간을 늘이기 위하여 탈수시켜 왔다. 본 연구는 생산된 숙주나물의 수분함량과 밀접하게 연관된 수확당일의 관수가 제품의 저장성에 미치는 영향을 파악하고자 수확 12시간 전부터 관수를 중단하거나 계속 관수하는 방법으로 생산된 숙주나물을 5일간의 저장중에 일어나는 형태 및 무게의 변화를 조사한 결과를 요약하면 다음과 같다. 1. 관수하지 않은 것에 비하여 계속 관수하여 재배한 숙주나물은 저장 3일 후까지 수분 함량이 높은 것으로 나타났다. 2. 수확당일 관수 유무에 관계없이 개체당 형성된 세근수, 하배축 및 뿌리 길이, 건물중은 차이가 없었던 반면, 관수하지 않은 것에 비하여 관수할 경우 하배축 중간부분은 굵었으나, 개체당 자엽과 하배축의 무게 증가로 전체 생체중은 많았다. 3. 하배축과 뿌리의 명도 및 색도 a, 하배축의 전단력은 수확당일 관수 유무간에 차이가 없었던 반면, 하배축 색도 b만 관수를 하지 않을 경우 높았다. 4. 수확당일 관수하지 않을 경우 저장 후 3일부터는 개체당 세근수가 감소하였으며, 하배축과 뿌리 길이, 하배축 직경, 각부위 및 전체 생체중도 개체당 세근수와 유사한 경향을 보였다. 5. 수확당일 관수하지 않을 경우 하배축의 전단력은 저장 5일차부터, 하배축과 뿌리의 명도는 저장기간이 길어질수록 감소하였다.

Keywords

References

  1. Bae, K. G., I. H. Yeo, and Y. H. Hwang. 1999. Methods of water supply of growth technology on best soybean sprouts. Korea Soybean Digest. 16(2) : 57-63
  2. Cho, S. H., J. Y. Heo, Y. J. Choi, J. H. Kang, and S. H. Cho. 2005. Effects of packaging and storage temperature on quality during storage of mungbean sprouts. Korean J. Food Preserv. 12(6) : 522-528
  3. Kang, J. H., Y. S. Ryu, S. Y. Yoon, S. H. Jeon, and B. S. Jeon. 2004. Growth of mungbean sprouts and commodity temperature as affected by water supplying methods. Korean J. Crop Sci. 49(6) : 487-490
  4. Kim, D. K., S. C. Lee, J. H. Kang, and H. K. Kim. 2003. Colletotrichum disease of mungbean sprout by Colletotrichum acutatum. Plant Pathology J. 19(4) : 203-204 https://doi.org/10.5423/PPJ.2003.19.4.203
  5. Lipton, W. J., W. K. Asai, and D. Fouse. 1981. Deterioration and $CO_2$ and ethylene production of stored mungbean sprouts. J. Amer. Soc. Hort. Sci. 106(6) : 817-820
  6. Ryu, Y. S. 2006. Establishment of commercial production system for improving productivity and quality of mungbean sprouts. Ph. D. Dissertation, Gyeongsang Natl. Univ., Korea
  7. Skowronek, F., L. Simon-Sarkadi, and W. H. Holzapfel. 1998. Hygienic status and biogenic amine content of mung bean sprouts. Z. Lebensm Unters Forsch A. 207 : 97-100 https://doi.org/10.1007/s002170050301
  8. Tajiri, T. 1979a. Effects of storage temperature and its fluctuation on keeping quality of mungbean sprouts. Nippon Shokuhin Kogyo Gakkaishi. 26(1) : 18-24 https://doi.org/10.3136/nskkk1962.26.18
  9. Tajiri, T. 1979b. Effects of packaging materials and storage temperature on keeping quality of bean sprouts. Nippon Shokuhin Kogyo Gakkaishi. 26(12) : 542-546 https://doi.org/10.3136/nskkk1962.26.12_542
  10. Tsou, S. C. S., K. K. Kan, and Y. H. Lee. 1985. Introduction of soybean processing products and preparation of mungbean sprouts. TVIS News 1(2) : 2-3
  11. Yoo, M. J., Y. S. Kim, and D. H. Shin. 2004. Comparative study on growth of spoilage microorganism in mungbean and soybean sprout. J. Food Hygiene Safety. 19(1) : 25-30