The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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Changes of Seed Germination Rate and Lipid Components in Different Brown Rices during Ageing

저장에 따른 생태형별 현미의 발아율과 지질 성분의 변화

  • 곽지은 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이점식 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 윤미라 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 김인환 (고려대학교 식품영양학과) ;
  • 이정희 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 김미정 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이춘기 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 김보경 (농촌진흥청 국립식량과학원) ;
  • 김욱한 (농촌진흥청 국립식량과학원 중부작물부)
  • Received : 2015.09.22
  • Accepted : 2015.10.26
  • Published : 2015.10.31
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Abstract

The objective of this study was to determine quality changes in seed germination rates and lipid components in Japonica and Tongil (indica/japonica) type brown rices with different tocol composition during storage. Moisture content, seed germination rate, crude lipid content, fat acidity, tocol content, free fatty acid composition of brown rice and pH of milled rice were measured to evaluate their quality after storage. Seed germination rates of stored Japonica and Tongil type brown rices were decreased by 22.4% and 59.7%, respectively, after 8 weeks of storage. The fat acidity of Japonica rice was significantly (p<0.05) higher than that of Tongil type brown rices after storage. The major tocol homologue of Tongil type was ${\gamma}-tocotrienol$, whereas, major tocol homologues of Japonica brown rices were ${\alpha}-tocopherol$ and ${\alpha}-tocotrienol$ throughout the entire storage period.

토콜즈(tocols) 이성질체 조성이 서로 다른 자포니카와 통일형 품종을 이용하여 저장기간에 따른 지질 관련 품질의 변화를 살펴보았다. 자포니카와 통일형 품종의 현미를 $35^{\circ}C$, 습도 80%에서 8주간 저장하며, 2주 간격으로 품질 변화를 분석한 결과, 자포니카 품종들의 발아율은 저장 초기 98.0%에서 저장 8주 후 22.4%까지 감소한 데 반해, 통일형 품종들은 저장 초기 93.3%에서 8주 후 59.7%로 감소해 통일형 품종의 발아율 감소율이 2배 이상 낮았고, 쌀의 저장 중의 산패 정도를 나타내는 지방산가 또한 통일형 품종에서 유의적으로 낮았다. 발아율 및 지방산가는 쌀의 저장 중 품질 저하를 판단하는 주요 기준이며, 본 실험을 통해 통일형 벼 품종이 자포니카 품종에 비해 저장에 따른 품질 저하 속도가 늦다는 사실을 확인하였다. 통일형 벼는 토코페롤 대비 토코트리에놀 함량이 높고, 특히 지질 안정성 및 지질의 산화 억제 효과가 뛰어난 ${\gamma}$-토코트리에놀의 함량이 높은 지질 특징을 지니고 있어, 벼 저장 중의 지질 산패 지연에 관여하였을 것으로 추측된다. 그러나 벼의 저장성과 관련된 명확한 성분 구명을 위해서는 자포니카와 통일형의 토콜즈(tocols) 조성 혼합물을 이용한 저장 실험이 추가로 수행되어야 할 것으로 생각된다.

Keywords

References

  1. AOAC. 1970. Official Methods of Analysis. 11th ed. Aassociation of Official Analytical Chemists. Washington DC, USA
  2. Ellis RH, Hong TD, Roberts EH. 1992. The low-moisture content limit to the negative logarithmic relation between seed longevity and moisture content in three subspecies. Annals of Botany 69:53-58 https://doi.org/10.1093/oxfordjournals.aob.a088306
  3. Han JG, Kim K, Kang KJ, Kim KK. 1996. Shelf-life prediction of brown rice in laminated pouch by n-hexanal and fatty acids during storage. Korean J Food Sci Technol 25:643-648
  4. Kim HJ. 2014. Effect of ${\alpha}-,{\beta},-{\gamma},$, and $\delta$-tocotrienol on the oxidative stability of lard. J Am Oil Chem Soc 91:777-782 https://doi.org/10.1007/s11746-014-2423-4
  5. Kim HY, Yang CI, Choi YH, Won YJ, Lee YT. 2007a. Changes of seed viability and physico-chemical properties of milled rice with different ecotypes and storage duration. J Crop Sci 52:375-379
  6. Kim JJ, Baek MK, Kim KS, Yoon MR, Kim GY, Lee JH. 2014. Changes of physicochemical properties and fatty acid compositions of rough rice stored at different storage temperatures and periods. Korean J Crop Sci 59:413-426 https://doi.org/10.7740/kjcs.2014.59.4.413
  7. Kim KY, Lee GM, Noh KI, Ha KY, Son JY, Kim BK. 2007b. Varietal difference of germination, fat acidity, and lipoxygenase activity of rice grain stored at high temperature. Korean J Crop Sci 52:29-35
  8. Kim NH, Kwak J, Baik JY, Yoon MR, Lee JS, Yoon SW, Kim IH. 2015. Changes in lipid substances in rice during grain development. Phytochemistry 116:170-179 https://doi.org/10.1016/j.phytochem.2015.05.004
  9. Kim OW, Kim DC. 2004. Safe storage period of paddy under different temperature and moisture content conditions. Korean J Food Preserv 11:257-262
  10. Ko SN, Kim CJ, Kim CT, Kim Y, Kim IH. 2010. Effects of tocopherols and tocotrienols on the inhibition of autoxidation of conjugated linoleic acid. Eur J Lipid Sci Technol 112:496-501 https://doi.org/10.1002/ejlt.200900177
  11. Ko SN, Kim CJ, Kim IH. 2003. Effects of roasting condition on the quality characteristics and oxidative stabilities of rice germ. Korea J Food Sci Technol 35:347-352
  12. Kwak J, Yoon SW, Kim DJ, Yoon MR, Lee JH, Oh SK, Kim IH, Lee JS, LEE JS, Chnag JK. 2013. Changes in nutraceutical lipid constituents of pre- and post-germinated brown rice oil. Korean J Food & Nutr 26:591-600 https://doi.org/10.9799/ksfan.2013.26.3.591
  13. Lin M, Wallmon A, Olsson-Mortlock C, Wallin R, Saldeen T. 2003. Mixed tocopherols inhibit platelet aggregation in humans:Potential mechanisms. Am J Clin Nutr 77:700-706 https://doi.org/10.1093/ajcn/77.3.700
  14. Park KY, Kang CS, Cho YC, Lee YS, Lee YH, Lee YS. 2003. Genotypic difference in tocopherol and tocotrienol contents of rice bran. J Crop Sci 48:469-472
  15. Rafael G, Mancha M. 1993. One-step lipid extraction and fatty acid methyl ester preparation from fresh plant tissues. Analytical Biochemistry 211:139-143 https://doi.org/10.1006/abio.1993.1244
  16. Ricciarelli R, Zingg JM, Azzi A. 2001. Vitamin E: protective role of a Janus molecule. FASEB J 15:2314-2325 https://doi.org/10.1096/fj.01-0258rev
  17. Servinova E, Kagan V, Han D, Packer L. 1991. Free radical recycling and intramembrane mobility in the antioxidant properties of ${\alpha}$-tocopherol and ${\alpha}$-tocotrienol. Free Rad Biol Med 10:263-275 https://doi.org/10.1016/0891-5849(91)90033-Y
  18. So KH, Kim YS, Hong JS, Jeong JY, Cho JM. 1999. Studies on the change of components with long-term storage of paddy. Korean J Food & Nutr 12:409-414
  19. Theriault A, Chao JT, Wang Q, Gapor A, Adeli K. 1999. Tocotrienol:A review of its therapeutic potential. Clinical Biochemistry 32:309-319 https://doi.org/10.1016/S0009-9120(99)00027-2
  20. Tran TU, Suzuki K, Okadome H, Ikezaki H, Homma S, Ohtsubo K. 2005. Detection of changes in taste of japonica and indica brown and milled rice (Oryza sativa L.) during storage using physicochemical analysis and a taste sensing system. J Agric Food Chem 53:1108-1118 https://doi.org/10.1021/jf049064+
  21. Yashida Y, Niki E, Noguchi N. 2003. Comparative study on the action of tocopherols and tocotrienols as antioxidant: Chemical and physical effects. Chem Phys Lipids 123:63-75 https://doi.org/10.1016/S0009-3084(02)00164-0
  22. Yoon SW, Lee JS, Pyo YG, Ph SK, Lee JS, Kim IH. 2014. Nutraceutical lipid substances in Korean rice cultivars. J Food and Nutrition Research 2:40-46
  23. Zhou Z, Blanchard C, Helliwell S, Robards K. 2003. Fatty acid composition of three rice varieties following storage. Journal of Cereal Science 37:327-335 https://doi.org/10.1006/jcrs.2002.0502
  24. Zhou Z, Robards K, Helliwell S, Blanchard C. 2002. Ageing of stored rice: Changes in chemical and physical attributes. Journal of Cereal Science 35:65-78 https://doi.org/10.1006/jcrs.2001.0418

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