KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Changes in Chemical Components of Pigmented Rice during Germination

유색미 품종의 발아 시 화학성분의 변화

  • Received : 2018.03.12
  • Accepted : 2018.03.19
  • Published : 2018.03.31
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Abstract

This study was conducted to use fundamental data about functional foods based on pigmented rice varieties-2 types of normal rice, 6 types of black rice-to analyze changes in chemical component activity during germination. The results are summarized as follows: Germination rates of the pigmented rice varieties were the highest at $30^{\circ}C$. There was a tendency for crude protein contents to increase under the influence of germination periods, and the crude protein contents were the highest on the $6^{th}$ day. Crude fat contents were the highest on days 6-8. Nevertheless, the crude fat contents in pigmented rice decreased during the first 2 days, and subsequently, the contents increased steadily. Crude fiber contents were the highest on the $8^{th}$ day. However, there was no meaningful tendency. Sucrose, glucose, and fructose contents in the pigmented rice increased during germination. In normal rice, glucose content increased up to the $8^{th}$ day. It was higher than that of brown rice. However, sucrose and fructose contents showed no meaningful tendency. There was a general tendency for GABA, alanine, glutamic acid, asparagine, aspartic acid, and lysine contents in the pigmented rice to increase under the influence of germination periods. Aspartic acid and asparagine contents were shown to decrease, compared with that in pre-germinated normal rice. In all varieties, lysine was detected from the second germination day onwards, and on the $6^{th}$ day after germination, its contents were 6.24 mg/100 g and 15.58 mg/100 g in normal rice and pigmented rice, respectively.

본 연구는 유색 과피 품종의 발아 기간에 따른 화학성분 함량 변화를 조사하여 기능성 식품으로 활용할 기초자료를 제공하기 위하여 흰색 과피 2품종과 흑자색 과피 6품종에 대하여 성분 변화를 분석한 결과는 다음과 같다. 발아 기간이 경과함에 따라 조단백질 함량은 증가하는 경향으로 발아 6일째에 가장 높았다. 조지방 함량은 흰색 과피 품종에서는 발아 후 6일에 가장 높았으나, 흑자색 과피 품종에서는 발아 4일째 감소 후 계속 증가하여 8일에 가장 높았다. 조섬유 함량은 발아 후 8일째까지 가장 높았으나 발아 기간 중 경향이 일정하지 않았다. 유색 과피 품종의 sucrose, glucose 및 fructose 함량은 발아 기간이 경과할수록 증가하였으나, 흰색 과피 품종에서는 glucose 함량이 발아 후 8일에 현미 상태보다 증가하였고 sucrose와 fructose는 일정한 경향이 없었다. 흑자색 과피 품종의 발아현미 GABA, alanine, glutamic acid, asparagine, aspartic acid은 발아 기간이 경과할수록 증가하는 경향이다. 특히 GABA는 172배 증가하였다. 흰색 과피 품종에서는 aspartic acid와 asparagine은 발아 전 현미 함량보다 감소하였다. Lysine은 모든 품종에서 발아 전에는 검출되지 않았으나 발아 2일부터 검출되었는데, 발아 6일에 흰색 과피 품종에서는 6.24 mg/100 g, 유색 과피 품종에서는 15.58 mg/100 g로 증가하였다.

Keywords

References

  1. Choi, K. S. and Z. U. Kim. 1985. Changes in lipid components during germination of mung bean. Korean J. Food Sci. Technol. 17(4).
  2. Chung, D. S. and H. K. Kim. 1998. Changes of protein and lipid composition during germination of Perilla frutescens seeds. Korean J. Life Science. 8(3) : 318-325.
  3. Jeon, S. H., K. A. Lee, and K. E. Byoun. 2005. Studies on Changes of Isoflavone and Nutrients during Germination of Soybean Varieties. Korean Journal of Human Ecology. 14(3) : 485-489.
  4. Jung, H. Y., D. H. Lee, H. Y. Baek, and Y. S. Lee. 2008. Pre- and post-germination changes in pharmaceutical compounds of ferminated brown rice. Korean J. Crop Sci. 53(S) : 37-43.
  5. Kim, C. Y. 1999. A Study on the Growth Characteristics and Analysis of Chemical Component of Grains as Affected by Cultivation Methods in the Colored Rice and Aromatic Rice Varieties. PhD Thesis, Chung Nam National University.
  6. Kim, D. J., S. K. Oh, M. R. Yoon, A. R. Chun, I. S. Choi, D. H. Lee, J. S. Lee, K. W. Yu, and Y. K. Kim. 2011a. The change in biological activities of brown rice and germinated brown rice. J. Korean Soc. Food Sci. Nutr. 40(6) : 781-789. https://doi.org/10.3746/jkfn.2011.40.6.781
  7. Kim, H. Y. 2012. Identification and chemopreventive effects of bioactive compounds from germinated rough rice (Oryza sativa L.). PhD Thesis, Chungbuk National University.
  8. Kim, H. Y., S. H. Lee, I. G. Hwang, T. M. Kim, D. S. Park, J. H. Kim, D. J. Kim, J. S. Lee, and H. S. Jeong. 2012. Antioxidant activity and anticancer effects of rough rice (Oryza sativa L.) by germination periods. J. Korean Soc Food Sci Nutr. 41(1) : 14-19. https://doi.org/10.3746/jkfn.2012.41.1.014
  9. Kim, H. Y., I. G. Hwang, T. M. Kim, D. S. Park, J. H. Kim, D. J. Kim, Y. R. Lee, J. S. Lee, and H. S. Jeong. 2011b. Changes in chemical composition of rough rice (Oryza sativa L.) according to germination period. J. Korean Soc. Food Sci. Nutr. 40(9) : 1265-1270. https://doi.org/10.3746/jkfn.2011.40.9.1265
  10. Kim, H. Y., I. G. Hwang, K. S. Woo, K. H. Kim, K. J. Kim, C. K. Lee, J. S. Lee, and H. S. Jeong. 2010. Chemical Components Changes of Winter Cereal Crops with Germination. J. Korean Soc Food Sci Nutr. 39(11), 1700-1704. https://doi.org/10.3746/jkfn.2010.39.11.1700
  11. Kim, I. S., S. H. Han, and K. W. Han. 1997. Study on the chemical change of amino acid and vitamin of rapeseed during germination. J. Korean Soc. Food Sci. Nutr. 26(6) : 1058-1062.
  12. Kim, I. S., T. B. Kwon, and S. K. Oh. 1988a. Study on the chemical change of general composition, fatty acids and minerals of rapeseed during germination. Korean J. Food Sci. Technol. 20(2) : 188-193.
  13. Kim, I. S., T. B. Kwon, and S. K. Oh. 1988b. Study on the compositional change of free sugars and glucosinolates of rapeseed during germination. Korean J. Food Sci. Technol. 20(2) : 194-199.
  14. Kim, J. Y. 2008. Changes in Chemical Components of Korean Rough Rice During Germination. Master Thesis, Chung Buk National University.
  15. Ko, J. Y., S. B. Song, J. S. Lee, J. R. Kang, M. C. Seo, B. G. Oh, D. Y. Kwak, M. H. Nam, H. S. Jeong, and K. S. Woo. 2011a. Changes in chemical components of foxtail millet, proso millet, and sorghum with germination. J. Korean Soc. Food Sci. Nutr. 40(8) : 1128-1135. https://doi.org/10.3746/jkfn.2011.40.8.1128
  16. Kim, K. B. 2012. Physicochemical properties of Superjami and quality characteristics of cooked rice and seolgitteok using Superjami. PhD Thesis, Kyung Hee University.
  17. Kim, S. L., Y. K. Son, J. R Son, and H. S. Hur. 2001. Effect of Germination Condition and Drying Methods on Physicochemical Properties of Sprouted Brown Rice. Korean J. Crop Sci. 46(3) : 221-228
  18. Lee, E. H. and C. J. Kim. 2008. Nutritional changes of buckwheat during germination. Korean J. Food Culture. 23(1) : 121-129.
  19. Lee, M. H., H. S. Son, O. K. Choi, S. K. Oh, and T. B. Kwon. 1994. Changes in physico-chemical properties and mineral contents during buckwheat germination. Korean J. Food ＆ Nutrition. 7(4) : 267-273.
  20. Lee, Y. R., J. Y. Kim, K. S. Woo, I. G. Hwang, K. H. Kim, K. J. Kim, and J. H. Kim. 2007. Changes in the chemical and functional components of Korean rough rice before and after germination. Food Sci. Biotechnol. 16(6) : 1006-1010.
  21. Mo, K. H., Y. M. Choi, S. G. Choi, and J. S. Lee. 2006. The change of some compounds in brown rice germinated by filtrate of loess suspension. J. Agriculture and Life Sciences. 40(2) : 41-48.
  22. Ryu, S. N., S. Z. Park, and S. S. Kang. 2005. Studies on explora- tion and expansive use of genetic variation of functional substances in rice. RDA report.
  23. Sung, J. H., J. S. Lee, S. K. Oh, J. S. Lee, and W. S. Choi. 2013. Changes in phytochemical content and antiproliferative activity of germinated Geunnun and Ilpum rice varieties. J. Korean Soc. Food Sci. Nutr. 42(7) : 1157-1161. https://doi.org/10.3746/jkfn.2013.42.7.1157