Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Evaluation of the Quality Characteristics in Omija (Schizandra chinensis Baillon) Powder Tea

가공방법을 달리한 오미자 분말차의 품질 특성 분석

  • Lee, Hyeon-Jeong (Department of Food Science and Technology, Kyungpook National University) ;
  • Sung, Jun-Hyung (Department of Food Science and Technology, Kyungpook National University) ;
  • Choi, Ji-Young (Department of Food Science and Technology, Kyungpook National University) ;
  • Cho, Jeong-Seok (Department of Food Science and Technology, Kyungpook National University) ;
  • Lee, Yeong-Min (Department of Food Science and Technology, Kyungpook National University) ;
  • Chung, Hun-Sik (Department of Food Science and Technology, Pusan National University) ;
  • Moon, Kwang-Deog (Department of Food Science and Technology, Kyungpook National University)
  • Received : 2015.10.12
  • Accepted : 2015.12.28
  • Published : 2016.02.29
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Abstract

The purpose of this study was to evaluate the quality characteristics in different types of Omija (Schizandra chinensis Baillon) powder tea. Raw Omija was prepared in three ways: 1) freeze-dried powder of whole Omija (FD), 2) freeze-dried powder of pressed Omija juice (PF), and 3) granules of pressed Omija juice (PG). Dried Omija was extracted and prepared in three ways: 4) freeze-dried powder (EF), 5) granules (EG), and 6) spray-dried powder (ES). The total soluble solid contents and turbidity were higher in PG, EG, and ES than those in other samples. $L^*$ value, pH, and reducing sugar contents were higher in PG and EG than those in other samples. Finally, $a^*$ value, $b^*$ value, total phenolic compounds contents, antioxidant activities, total anthocyanin contents, and schizandrin contents were lower in PG and EG than those in other samples. These results show that FD, PF, EF, and ES are more effective in outstanding redness and antioxidant activities compared to other Omija powder products.

오미자의 이용성 확대를 위한 건조 가공 제품의 가능성을 확인해보고자 생오미자 및 건조오미자를 이용하여 착즙, 추출, 동결건조, 과립성형 및 분무건조 등의 방법을 이용하여 다양한 오미자분말차를 제조하여 그 품질 특성을 비교 분석하였다. PG, EG 및 ES의 총가용성고형분 함량 및 탁도의 경우 다른 구에 비해 유의적으로 높았으며, pH 측정 결과 PG 및 EG가 다른 구보다 유의적으로 높았다. PG 및 EG의 색도 측정 결과 다른 구에 비해 높은 $L^*$값, 낮은 $a^*$값 및 $b^*$값으로 나타나 오미자의 가공 형태에 따른 유의적 차이가 뚜렷함을 알 수 있었다. PG 및 EG의 경우 다른 구에 비해 유의적으로 높은 환원당 함량, 낮은 총 페놀성 화합물의 함량, 낮은 항산화활성, 낮은 총 안토시아닌 함량 및 낮은 schizandrin 함량을 보여 오미자의 가공 형태에 따른 유의적 차이를 확인할 수 있었다. 또한 관능검사 결과 PG 및 EG는 낮은 붉은색 정도, 낮은 탁도 정도, 낮은 신맛 정도, 높은 쓴맛 정도 및 높은 단맛 정도를 보였으며, 종합적 기호도에서 PG 및 ES의 경우 가장 높은 점수를 받았다. 이와 같은 결과에서 붉은색과 항산화 활성, 안토시아닌 및 schizandrin 함량이 우수한 오미자 분말 제품을 위해 과립차보다 동결건조 및 분무건조분말차가 바람직하다고 판단된다.

Keywords

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