Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Optimization of the preparation method of citron (Citrus junos Sieb.) beverage containing hibiscus using response surface methodology

반응표면 분석법을 이용한 히비스커스 첨가 유자 음료 제조의 최적화

  • Received : 2021.03.23
  • Accepted : 2021.03.29
  • Published : 2021.04.30
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Abstract

This study aimed to optimize the preparation method of citron (Citrus junos Sieb.) beverages with hibiscus using response surface methodology (RSM). The experimental conditions were established using a central composite design with three independent variables as follows: ratios of citron (40~60%), citric acid (0.34~0.94%), and hibiscus (0.3~0.7%). The results indicate that an increase in the citron ratio contributed to increased sweetness and as the concentration of citron and hibiscus increased, the brightness of the citron beverage decreased and the yellowness increased. The citron ratio showed a significant correlation with the ABTS radical scavenging capacity. Among the 15 experimental groups, 4 representative samples showing statistical significance were selected, and sensory tests were performed, in comparison with commercially available products. As a result of the sensory test, four beverages prepared with the selected recipes showed higher preference than commercial beverages, and optimal recipe conditions were 40% citron, 0.34% citric acid, and 0.5% hibiscus.

히비스커스와 유자를 이용하여 생리활성과 소비자 선호도를 증대시키는 유자음료제조의 최적 배합비율을 반응표면 분석법을 이용하여 개발하였다. 유자 음료의 제조 조건으로는 유자농축액의 농도(40, 50, 60%), 구연산의 비율(0.34, 0.64, 0.94%), 히비스커스의 비율(0.3, 0.5, 0.7%)을 달리하여 품질 특성과 생리활성을 조사하고, 소비자기호도를 평가하여 최적 배합비율을 선정하였다. Box-Behnken design을 이용한 히비스커스 유자 음료의 이화학적 특성 결과는 당도와 색도의 변화는 유자농축액, 산도는 구연산의 비율에 따라 결정되었다. 항산화 활성은 유자농축액과 히비스커스의 교호작용이 있는 것으로 나타났다. 유자농축액은 항산화 활성에 양의 상관관계를 보이나 히비스커스는 유자농축액과 혼합하면 음의 상관관계가 있는 것으로 나타나 히비스커스의 첨가 양이 최소가 될 때 항산화 활성이 높게 나타나는 결과를 보였다. 소비자 기호도 평가 결과 유자농축액 40%, 구연산 0.34%, 히비스커스 0.5%를 첨가하는 것이 바람직한 것으로 나타났다. 따라서 생리활성과 소비자 기호도 평가결과를 종합해 볼 때 히비스커스 유자 음료의 최적 조건은 소비자 기호도 평가의 최적 조건과 동일한 것으로 판단된다. 이 연구결과는 다양한 히비스커스와 유자를 이용한 식품 개발의 기초자료로 제공되어 향후 제품개발수행에 도움이 될 것으로 여겨진다.

Keywords

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