Effect of a Final Rolling Process on Okro Tea Quality

정유조건이 옥로차 품질에 미치는 영향

  • 박장현 (전남농업기술원 차시험장) ;
  • 조덕봉 (광주보건대학 식품가공과) ;
  • 김석언 (전남농업기술원) ;
  • 임근철 (전남농업기술원 차시험장) ;
  • 최형국 (전남농업기술원 차시험장)
  • Published : 2003.02.01


Moisture content was 79.5%, banjhi shoot was 77.8% of the total and the weight was 29.4 g/100 buds in the harvested plant leaves used for manufacturing Okro tea. Okro tea heated at 75$^{\circ}C$ for 30 min showed the best quality among all the treatmants. Chemical components such as total nitrogen, theanine, arginine and chlorophyll were high in the tea treated at 75$^{\circ}C$ for 30 min compare with those of other treatments. The sensory evalution test In terms of appearance shape color and taste showed greater preferences in Okro tea treated at 75$^{\circ}C$ for 30 min than those of other treatments. The results suggested that heat treatment at 75$^{\circ}C$ for 30 min was the best condition for the final rolling process in manufacturing of Okro tea.


  1. Kaoahachi O. 1988. New compendium of tea work. Shamhyop Printing Office, Sizuoka. p 334-351.
  2. Mashao O. 1985. The whole curriculum for tea growing. Shongtak Printing Office, Sizuoka. p 158-162.
  3. Kim JT. 1996. The science and culture of tea plant. Bolim Printing Office, Seoul. p 103-110.
  4. Institute of Agriculture Sience. 1989. Methodology of soil chemical analysis. Rural Development Administration, Korea. p 68-77.
  5. Ikegaya K, Takayamagi H, Anan T. 1990. Quantative analysis of tea constituent. Tea Research J 71: 43-73.
  6. 小原哲二郞, 岩尾裕之. 1977. 食品科學技術書. 松澤印刷所, 日本. p 393-395.
  7. Park JH, Choi HK. 2001. Effect of kinds of slow-release fertilizers on yield and quality of 2nd harvested leaves of tea. J Kor Tea Sci 7: 135-142.
  8. Mashao O. 1986. The growing diagnosis and culture of tea plant. Cheil Printing Office, Sizuoka. p 164-189.
  9. Fornell A, Bimbenet JJ, Almin Y. 1980. Experimental study and modelization for air drying of vegetable products. Lebensm Wiss U Technol 14: 96-100.
  10. Yamazawa S, Yoshizaki S, Maekawa T, Sonobe K. 1970. Studies on drying of agricultural products (II). J Soc Agr Mach Japan 33: 279-287.
  11. Maeda S, Nakagawa M. 1997. General chemical and physical analysis on various kinds of green tea. Tea Research J 45 : 85-92.
  12. Nakagawa M, Anan T, Ishima N. 1981. Tea relation of green tea taste with its chemical make-up. Bulletin of the National Reseach Institute of Tea 17: 70-75.