채취시기에 따른 녹차의 성분 변화

The Changes of Chemical Composition of Green Tea by Picking Periods

  • 양재경 (경상대학교 환경산림과학부(농업생명과학연구원)) ;
  • 김종철 (하동녹차연구소) ;
  • 이종국 (하동녹차연구소) ;
  • 조종수 (경남과학기술대학교 인테리어재료공학과)
  • Yang, Jae-Kyung (Div. of Environmental Forest science, Gyeongsang National Univ.(Insti. of Agric. and Life Sci.)) ;
  • Kim, Jong-Cheol (Instituent of Hadong Green Tea) ;
  • Lee, Jong-Gug (Instituent of Hadong Green Tea) ;
  • Jo, Jong-Soo (Gyeongnam National University of Science and Technology. Department of Interior Materials Engineering)
  • 투고 : 2012.01.09
  • 심사 : 2012.04.27
  • 발행 : 2012.04.30

초록

본 연구는 하동지역의 녹차에 대해 근적외선 분광분석법(Near Infrared Spectroscopy, NIRS)을 이용하여 채취시기별 화학적 성분(총질소, 엽록소, 탄닌, 유리아미노산, 데아닌, 비타민 C, 카페인, 카테킨류, 총카테킨) 및 무기물 성분 변화에 대하여 분석하였다. 녹차의 화학적 성분 함량에 있어 엽록소, 탄닌, 비타민 C와 총카테킨 함량은 채취시기가 늦어질수록 증가한 반면, 총질소, 유리아미노산, 데아닌, 카페인 등은 대체로 감소하는 경향을 보였다. 무기물 함량은 채취시기가 늦어질수록 Mg, Ca, Mn은 증가하였으나 Na, K, B는 감소하였다. 또한 우전과 세작의 화학성분 중 총질소, 엽록소, 유리아미노산, 데아닌, 카페인, 총카테킨과 무기물 중 Na, Mg, Ca, B, Se 함량에 있어서는 차이를 나타내지 않았다.

This study was carried out to investigate the chemical composition and the inorganic constituents of the green tea at the 3 picking periods (Ujeon, Sejag, Jungjag) in Hadong. The results as follows ; The contents of chlorophyll, tannin, vitamin-c and total catechin were increased as picking periods increased but the contents of total nitrogen, total free amino acids, theanine and caffeine were decreased on the reverse. The inorganic constituents Mg, Ca and Mn were increased as picking periods getting late but the Na, K, B contents were decreased on the reverse. The contents of the total nitrogen, chlorophyll, total free amino acid, theanine, caffeine and total catechin and Na, Mg, Ca, B and Se were insignificant differences between Ujeon and Sejag.

키워드

과제정보

연구 과제 주관 기관 : 경남과학기술대학교

참고문헌

  1. Choi, S. H. and M. R. Rhyu 1992. Analysis of theanine contents in commercial green tea. Kor. Soc. of Food Sci. Technol. 24: 177-179.
  2. Choi, J., J. U. Chun, J. H. Park, G. H. Shin, K. C. Lim, and K. C. Cho. 2001. A simple analysis method for chemical components of tea leaves using Near- Infrared spectroscopy. J. Kor. Tea Soc. 7: 77-89.
  3. Choi, J., J. U. Chun, and J. D. Park. 2010. Effects of mechanical panning conditions in processing on major important factors related to quality of green tea. J. Kor. Tea Soc. 16: 105-112.
  4. Choi, S. H., B. H. Lee, and H. D. Choi. 1992. Analysis of catechin contents in commercial green tea by HPLC. J. Korean Soc. Food Nautr. 21: 386-389.
  5. Chun, J. U. and K. C. Cho. 2007. Discrimination of Korean and Japanese green tea products using NIR spectroscopy. J. Kor. Tea Soc. 13: 93-104.
  6. Chun, J. U. 2007. Use of Near-Infrared spectroscopy for discriminating Korean and Chinese green tea products. J. Kor. Tea Soc. 13: 97-110.
  7. Eun, J. B., C. O. Rhee, and D. Y. Kim. 1985. Studies on the chemical constituents of the tea shoots in native tea plant in Korea - Part 1. Total nitrogen, ash, water extract, tannin, caffeine and vitamin C. J. Korean Agric. Chem. Soc. 28: 202-208.
  8. Fenandez-Aparicio, M., J. C. Sillero, and D. Rubiales. 2007. Intercropping with cereals reduces infection by Orobanche crenata in legumes. Crop Prot. 26: 1166- 1172. https://doi.org/10.1016/j.cropro.2006.10.012
  9. Han, S. Z. 2009. Antimicrobial effect of polyphenol in green tea on Candida albicans and Neisseria gonorrhoeae. J. Kor. Tea Soc. 15: 77-83.
  10. Jo, J. S., J. C. Kim., K. H. Cho., R. M. Kim. and J. Y. Han. 2011. Chemical constituent variabilities of the green tea leaves by harvest periods. J. Korean Wood Sci. Tech. 39: 370-380. https://doi.org/10.5658/WOOD.2011.39.4.370
  11. Kim, C. M., J. H. Choi, and S. K. Oh. 1983. Chemical change of major tea constituents during tea marnufacture. Kor. J. Food Nutri. 12: 99-104.
  12. Kim, B. S., W. M. Yang, and J. Choi. 2002. Comparison of caffeine, free amino acid, vitamin C and catechins content of commercial green tea in Bosung, Sunchon, Kwangyang, Hadong. J. Kor. Tea Soc. 8: 55-62
  13. Kim, J, W., G. H. Shin, H. Kim, Y. S. Kim, J. S. Han, and H. K. Choi. 1996. The current status of tea cultivation in Korea. J. Kor. Tea Soc. 2: 209-216.
  14. Kim, S. H., D. S. Han, and J. D. Park. 2004. Changes of some chemical compounds of Korean (Posong) green tea according to harvest periods. Korean Soc. Food Sci. Technol. 36: 542-546.
  15. Kim, Y. G., J. D. Lee, H. S. Kim, and K. J. Song. 2010. Effect of manufacturing methods on chemical components and quality of green tea with different tea cultivars. J. Kor. Tea Soc. 16: 77-83.
  16. Ko, K. S., S. S. Oh, J. H. Lee, J. W. Hyun, and Y. G. Kim. 2010. Distribution of inorganic elements in Jeju green tea. J. Kor. Tea Soc. 16: 85-88.
  17. Lee, S. B. 2001. A study on the first cultivation of tea in Korea. J. Kor. Tea Soc. 7: 79-91.
  18. Lee, S. H., K. S. Choi, and J. Choi. 2004. Changes of chemical components of tea due to plucking season during cultivation in greenhouse. J. Kor. Tea Soc. 10: 63-73.
  19. Lee, Y. J., M. S. Ahn, and K. H. Hong. 1998. A study on the content of general compounds, amino acid, vitamins, catechins, alkaloids in green, oolong and black tea. J. Food Hyg. Safety. 13: 377-382.
  20. Moon, J. H. and K. H. Park. 1995. Functional components and physiological activity of tea. J. Kor. Tea Soc. 1: 177-193.
  21. Nakagawa, M. and K. Furuya. 1975. Varietal difference of amino acids, tannin and total nitrogen in tea shoots. Study of Tea 48: 84-95.
  22. Park, J. H., H. Kim, H. K. Choi, T. S. Kim, J. W. Kim, and K. S. Kim. 1995. Studies on the growth characteristics and chemical constituents of leaves in domestic tea plant : Growth characteristics and mineral element, tannin, caffeine and vitamin C contents. J. Kor. Tea Soc. 1: 163-175.
  23. Park, J. H., K. S. Kim, S. W. Kim, H. K. Choi, and S. C. Kim 1997. Chemical components of Korean native tea plants. Korean J. Medicinal Crop. Sci. 5: 217- 224.
  24. Park, J. H., K. S. Kim, H. Kim, H. K. Choi, and S. W. Kim. 1996. Studies on the chemical constituent of free amino acid, theanine and catechin contents in domestic tea shoots. J. Kor. Tea Soc. 2: 197-208.
  25. Park, J. H., H. K. Choi, and K. H. Park. 1998. Chemical components of various green teas on market. J. Kor. Tea Soc. 4: 83-92.
  26. Park, J. H. and K. S. Kim. 1998. Studies on growth environmental and inorganic components of Korean native tea plants (Camellia sinensis O. kuntze). Korean Soc. Soil Sci. Fert. 31: 25-32.
  27. Park, J. H., J. S. Han, and H. K. Choi. 1999. Effect on quality of pan-fired green tea by 1st pan-firing time. Korean J. Medicinal Crop Sci. 7: 101-106.
  28. Park, J. H., Y. O. Kim,,, S. H. Nam, and J. K. Kim. 2008. Effect of plucking season and days on main component content of green tea. J. Kor. Tea Soc. 14: 167-174.
  29. Park, C. S. 2005. Component and quality characteristics of powdered green tea cultivated in Hwagae area. Korean Soc. Food Pres. 12: 36-42.
  30. Park, Y. S., H. H. Rue, M. K. Lee, Y. J. Park, B. G. Heo. 2009. Differential sensory properties and chemical components of doncha tea prepared at different harvesting dates. J. Kor. Tea Soc. 15: 87-92.
  31. Park, J. H., Y. O. Kim., S. H. Nam. and J. K. Kim. 2010. Effect of plucking season and days on main component content of green tea. J. Kor. Tea Soc. 14: 167-174.
  32. Shin, A. J. and S. J. Cheon. 1988. Physico-chemical properties of Korean green teas by varieties and processing methods. Korean J. Soc. Food Sci. 4: 47-52.
  33. Shin, M. K., M. K. Chang, and E. S. Seo. 1995. Chemical properties on the quality of marketed roasting green teas. Kor. Soc. Food Sci. 11: 356-361.
  34. Wee, J. H., J. H. Moon. and K. H. Park.1999. Catechin content and composition of domestic tea leaves at different plucking time. Korean J. Food Sci. Technol. 31: 20-23.
  35. Yasuda, M., M. Kondo, T. Sonda, K. Takedomi, S. Eguchi, and A. Eguchi. 2003. The effects of tea manufacturing methods on the chemical components and the physiological function in tea. J. Kor. Tea Soc. 9: 45-60.