Studies on the Improvement of Herb Tea by Addition of Yucca (Yucca shidigera)

유카(Yucca shidigera) 첨가에 의한 허브차의 개선에 관한 연구

  • Young Hee-Tae (Dept. of Food & Nutrition, Daejeon Health Sciences College) ;
  • Choi Hwa-Jung (Dept. of Interdisciplinary Program in Agricultural Biotechnology, Seoul National University)
  • 양희태 (대전보건대학 식품영양과) ;
  • 최화정 (서울대학교 협동과정 농업생물공학)
  • Published : 2005.03.01

Abstract

Herbs and yucca(Yucca shidigera) are widely used a source of tea and otherwise such as botanical medicine, essential oil for perfumes, cosmetics, and food spices. This study was carried out to investigate the characteristics of herb tea prepared with lemon verbena, spearmint, apple mint, Korea mint, rosemary, pineapple sage, Chrysanthemum indicum, stevia, lavender, lemon balm cultivated in Korea and effects by addition of yucca. Approximate composition of yucca were as follows: moisture 5.88%, crude protein 5.46%, crude fat 0.69%, crude ash and 7.59%. pH of herb tea mixed yucca at 80℃ was decreased in lemon verbena, spearmint, apple mint, Korea mint, and rosemary in comparison herb tea alone, but soluble solids were similar in two tea. In the result of sensory test, herb tea and herb tea mixed Yucca were not difference with a few exceptions. pH of mentha(Korea mint) tea by addition of yucca was decreased according to increment amount of yucca. The sensory evaluation score of mentha tea by addition of yucca were increased when the tea was processed with 0.01∼0.04% yucca.

허브와 유카는 차나 의약품, 화장품, 향신료 등에 널리 이용되고 있는 식물로써 본 연구에서 레몬 버베나, 스피아민트, 애플민트, 코리아민트(박하), 로즈마리, 파인애플세이지, 감국, 스테비아, 라벤더, 그리고 레몬 바베나 10종에 허브 및 각 단일종 허브에 0.02% 유카를 첨가하여 80℃에서 우려낸 차의 pH 및 가용성 고형물 양을 조사하였다. 허브차 단독보다는 유카를 첨가하였을 때 레몬바베나, 스피아민트, 애플민트, 박하, 그리고 로즈마리의 pH는 약간 감소하였으며, 고형물 함량에는 변화가 거의 없었다. 관능평가에서 허브차와 유카혼합차의 경우 몇몇을 제외하고는 큰 차이를 보이지 않았고, 향, 색, 맛, 그리고 전체적인 기호도에서 전체적으로 박하가 가장 좋은 것으로 나타났으며, 박하에 유카를 혼합했을 때 pH는 혼합농도가 높을수록 계속 감소하였으며, 관능평가 결과는 저농도(0.01∼0.04%) 첨가시 향상하였으나 그 이상 첨가시 오히려 선호도가 낮은 것으로 나타났다. 따라서 유카를 허브 차에 저농도로 혼합하여 관능에 영향을 주지 않으면서도 새로운 기능성을 갖는 유카허브차를 개발하는데 그 가능성을 보여줄 뿐만 아니라 허브 중에서 특히 박하와 유카혼합차의 개발 가능성을 보여주었다고 생각된다.

Keywords

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