Effect of Green Tea Powder on the Sensory Quality of Cooked Rice

분말 녹차가 쌀밥의 관능적 특성에 미치는 영향

  • 신두호 (우송공업대학 식품과학계열) ;
  • 이연화 (우송공업대학 식품과학계열)
  • Published : 2004.09.01

Abstract

In this study, rice was cooked with 0%, 0.5%, 1.0% and 2.0% green tea powder content to improve functionality of cooked rice. The effects of green tea powder content on the physical, texture and sensory characteristics of cooked rice were examined. Moisture contents of cooked rice with green tea powder were decreased with increasing amounts of added green tea powder. Initial pasting temperature of rice powder was showed an increase with increasing amounts of added green tea powder, besides peak viscosity was decreased. The solubility and swelling power were decreased with increasing amounts of added green tea powder. The color of cooked rice was darkened gradually with the increasing amounts of added green tea powder, and showed the dark green. Sensory adhesiveness was gradually decreased with the increasing amounts of added green tea powder, and cohesiveness, gummness, chewiness and hardness were increased. Sensory glassiness, overcook, stickiness and hardness had lower score than control group, but sensory color, flavor and overall acceptability had higher score with addition of 1.0% and 2.0% green tea powder. Concludingly, in items of overall sensory, cooked rice with 1.0% green tea powder showed the best result.

쌀밥의 기능성을 강화할 목적으로 분말녹차를 0%, 0.5%, 1.0%, 2.0% 혼합하여 밥을 지어 분말녹차밥의 물성 및 관능적 특성을 실험하였다. 분말녹차밥의 수분함량은 분말녹차 첨가량이 많을수록 적었다. 쌀가루의 amylogram 특성은 분말녹차의 첨가량이 증가할수록 최고 점도는 감소하였으나 호화개시온도는 증가하는 경향을 나타냈다. 쌀전분의 팽윤력 및 용해도는 분말녹차첨가량이 증가할수록 감소하였다. 분말녹차밥의 색깔은 암녹색을 나타냈으며 분말녹차 첨가량이 증가할수록 어두워졌다. 분말녹차밥의 texture는 접착성은 분말녹차 첨가량이 증가할수록 떨어졌으나 응집성, 검성, 씹힘성, 경도는 증가하는 경향을 나타냈다. 관능검사 결과 밥알의 윤기, 퍼짐성, 차짐성, 경도는 흰쌀밥보다 낮게 평가되였으나 색깔은 2.0% 첨가가 그리고 향미, 전체적인 기호도에 있어서는 분말녹차 1.0%와 2.0% 첨가한 쌀밥이 좋은 점수를 얻었으나 서로간에 유의성은 없었다. 따라서 분말녹차밥을 지을 때 분말녹차 1.0% 첨가가 윤기, 퍼짐성, 차짐성, 경도 및 향미 등의 종합적인 관능 면에서 적절하다고 생각된다.

Keywords

References

  1. 신미경. 전통 차와 음청류 문화 : 녹차의 과학. 1994 년도 한국식생활문화학회 추계학술심포지움 및 정기총회. 한국식생활문화학회지 9(4):433-445. 1995
  2. Park, CO, Seung, HJ and Beung, HR. Antioxidant activity of green tea extracts toward human low density lipoprotein. Korean J. Food Sci. Tech. 28(5): 850-858. 1996
  3. Sin, MK, Han, SH and Han, GJ. effect of green tea on the serum lipid and liver tissue of cholesterol fed rats. Korean J. Food Sci. Tech. 29(16): 1255-1263. 1997
  4. Im, JG and Kim, YH. Effects of green tea addition on the quality of white bread. Korean J. Food Sci. 15(4):395-400, 1999
  5. Park, GS and Lee, SJ. Effects of job's tears powder and green tea powder on the characteristics of quality of bread. J. Korean Soc. Food Sci. Nutr. 28(6):1244-1250. 1999
  6. Roh, HJ, Shin, YS, Lee, KS and Shin, MK. Effect of water extract of green tea on the quality and shelf life of cooked rice. Korean J. Food Sci. Tech. 28(3):417- 420. 1996
  7. Roh, HJ, Shin, YS, Lee, KS and Shin, MK. Antimicrobial activity of water extract of green tea against cooked rice putrefactive microorganism. Korean J. Food Sci. Tech. 28(1):66-71. 1996
  8. Yasuko Kainuma and Chieko Seki. Cooking of rice with green tea extract. Japan J. of Home Economic Assocition 25(2):125-131. 1974
  9. Yoshiko Hibi. Property of rice gruel boiled in water (shiragayu) and tea(Chagaya). Japan J. of Home Economic Assocition 33(11):565-572. 1982
  10. 管原龍幸 : 食品學實驗書, pp. 43. 建帛社, 1995
  11. 이연화. 두유박 첨가가 식빵의 품질특성에 미치는 영향, 한남대학교 석사학위논문. pp. 17. 2003
  12. Ha, TY, Park, SH, Lee SH and Kim, DC. Gelatinization properties of pigmented rice varieties. Korean J. Food Soci. Tech. 31(2):564-567. 1999
  13. 管原龍幸, 前川昭男. 食品分析 ハンドブシク, pp. 121. 2000
  14. Shin, DH and Lee, YW. Quality attributes of bread with soybean milk residue -wheat flour. Koaren J. Food & Nutr. 15(4):314-320. 2002
  15. Choo, NY. Effect of water extract of Gardenia jasminoides on the sensory quality and putrefactive microorganism of cooked rice. Korean J. Soci. Food Cookery Sci. 18(5):543-547. 2002
  16. Oh, GS, Na, HS, Lee, YS, Kim, K and Kim, UK Texture of cooked milled added waxy black rice and glutinouse rice. Korean J. Food Sci. Tech. 34(2): 213-219. 2002
  17. Koh, BK. Quality characteristics of prewashed rice with solution of waxy rice flour. Korean J. Food Sci. Tech. 33(4):455-460. 2001
  18. Kim, YS, Ha, TY, Lee, SH and Lee, HY. Effect rice bran dietary fiber on flour rhology and quality of wet noodles. Korean Soci. of Food Sci. and Tech. 29(1): 90-95. 1997
  19. 윤석권, 오훈일, 이형주, 문태화, 노봉수. 식품화학, pp.94. 수학사. 2002
  20. Li, CY, Shao, YY and Tseng, KH. Gelation mechanism and rheological properties of rice starch. Cereal Chem. 72:393-400. 1995
  21. 김성렬, 강국희, 박동기. 식품화학특론, pp. 83-84. 유한문화사, 1985
  22. 五十嵐, 宮澤陽夫. 食品の 機能化學, pp. 167-168. 弘學出版, 2002