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Functional and sensory characteristics of kiwifruit jangachi cured with traditional Korean sauces, doenjang and kochujang

된장과 고추장 키위장아찌의 기능성 및 관능 특성

  • Received : 2018.01.11
  • Accepted : 2018.03.12
  • Published : 2018.04.30

Abstract

This study aimed to compare total phenolic, total flavonoid, and vitamin C contents, antioxidant capacities, and sensory characteristics of jangachi made from green kiwifruit (Actinidia deliciosa cv. Hayward) and golden kiwifruit (A. chinensis cv. Hort16A), which were cured with doenjang and kochujang. Golden kiwifruit had higher total phenolic, total flavonoid, and vitamin C contents, and antioxidant capacities than green kiwifruit. Jangachi of both cultivars of kiwifruit had generally higher total phenolic and flavonoid contents, and antioxidant capacities than fresh kiwifruit. Doenjang jangachi of kiwifruit had higher total phenolic contents and antioxidant capacities than kochujang jangachi. Jangachi made from golden kiwifruit cured with kochujang, following pretreatment with sugar solution, had the highest overall quality on sensory evaluation among jangachies tested herein. Together, our findings suggest that kiwifruit jangachi may serve as a good dietary source of phenolics and antioxidants.

본 연구는 키위 가공 방안의 하나로 소금물 또는 설탕물로 전처리한 후 된장과 고추장을 담금원으로 하여 장아찌를 제조하였다. 기능성 키위장아찌의 활용 가능성을 제시하고자, 키위장아찌의 총페놀, 총플라보노이드, 바이타민 C 함량과 산화방지능을 비교 분석한 후 관능 평가를 실시하였다. 골드키위는 그린키위보다 더 높은 총페놀, 총플라보노이드, 바이타민 C 함량을 보였으며, 장아찌 제조 시 원과보다 높은 총페놀 함량과 산화방지능을 나타냈다. 전처리로 설탕을 이용할 경우 소금과 비교하여 총플라보노이드 함량은 감소하였지만 높은 바이타민 C 함량을 보였다. 또한 담금원으로 된장을 이용 시 고추장과 비교하여 높은 총페놀 함량과 산화방지능을 나타냈다. 관능 특성에서는 설탕과 고추장을 이용한 장아찌에서 높은 기호도 평가를 보였으나, 된장으로 만든 장아찌와 비교하여 낮은 산화방지능을 보였다. 된장 처리시 발생하는 맛, 향미 등의 낮은 기호도는 설탕을 이용한 전처리 과정으로 보완하였다. 결론적으로 설탕과 된장을 이용한 키위장아찌 제조는 키위의 낮은 저장성과 기호도에서 발생하는 단점을 극복하며 산화방지능을 높일 수 있는 방법이라고 판단된다.

Keywords

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