Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Antioxidant activities and quality characteristics of Matcha (powdered green tea) spreads containing coconut milk

말차 첨가 코코넛밀크 스프레드의 항산화 활성 및 품질특성

  • Kim, Young-Min (Department of Food and Nutrition, Sookmyung Women's University) ;
  • Han, Young-Sil (Department of Food and Nutrition, Sookmyung Women's University)
  • 김영민 (숙명여자대학교 식품영양학과) ;
  • 한영실 (숙명여자대학교 식품영양학과)
  • Received : 2017.09.18
  • Accepted : 2017.11.20
  • Published : 2018.02.28
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Abstract

The antioxidant activities and quality characteristics of Matcha (powdered green tea) spreads containing coconut milk were evaluated. Matcha spreads containing coconut milk was prepared with different amounts (0, 4, 8, 12, and 16 g) of Matcha, and indicated as S1, S2, S3, S4 and S5, respectively. The moisture content, viscosity, color, pH and sugar content were influenced by the concentration of Matcha. Total phenolic content and total flavonoid content of Matcha were found to be 226 mg GAE/g and 809.42 mg QE/g respectively. Also, 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity and reducing power of Matcha was found to be $5.76{\mu}g/mL$ ($IC_{50}$) and 2.26 O.D., respectively. The antioxidant activities of the Matcha spreads containing coconut milk increased with increasing concentration of Matcha. Sensory evaluation indicated that S3 (8 g) was the most preferred in terms of color, taste, texture, and overall acceptance. Based on these results, it is suggested that S3 (8 g) was appropriate for achieving good quality coconut milk based spread containing Matcha.

말차 첨가 코코넛밀크 스프레드의 항산화 활성과 품질특성을 측정하였다. 본 실험의 스프레드 제조 시 말차 첨가량은 각각 S1(0 g), S2 (4 g), S3 (8 g), S4 (12 g), S5 (16 g)으로 하였다. 품질특성 결과 수분, L값, a값, pH의 경우 말차 첨가량이 증가할수록 측정값은 감소하였다. 반면 점도, b값의 경우 말차 첨가량이 증가할수록 측정값은 증가하였다. 동량의 설탕을 첨가한 각 군의 당도 범위는 모든 군이 $2.70-3.27^{\circ}Bx$ 사이에 속하였다. 관능검사는 색, 맛(단맛, 쓴맛), 조직감(부착성, 발림성), 전반적인 기호도 항목을 평가하였다. 그 결과, 8 g의 말차를 첨가한 S3 스프레드가 가장 선호도가 높았다. 말차 분말의 항산화 활성에서 총 폴리페놀 함량과 총 플라보노이드 함량은 각각 226 mg GAE/g, 809.42 mg QE/g이였다. 또한 DPPH 라디칼 소거능과 환원력은 $5.76{\mu}g/mL$ ($IC_{50}$), 2.26 O.D.으로 측정되었다. 말차 첨가 코코넛밀크 스프레드의 항산화 활성은 말차 첨가량이 높을수록 증가함을 알 수 있다.

Keywords

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