감마선 조사 미역귀(Undaria pinnatifida Sporophyll) 열수추출물을 첨가한 초콜릿의 품질 및 항산화 활성

국문 초록 (Abstract)

미역귀를 이용한 가공식품개발을 위해 비조사구와 감마선 50 kGy 조사구의 미역귀 열수추출 분말을 첨가(1, 3, 5%)한 초콜릿을 제조하여 품질 특성을 알아보았다. 초콜릿의 수분함량에서는 첨가량이 증가할수록 증가하는 반면, pH는 미역귀 열수추출 분말 첨가에 의해 유의적으로 감소하였다. 색도의 L과 b값은 비조사구 및 조사구에서 첨가량이 증가할수록 유의적으로 감소하였으나, a값은 증가하는 경향을 보였다. 경도는 첨가량이 증가할수록 유의성을 보이며 높아졌고, 비조사구보다 조사구에서 경도가 높았다. DPPH 라디칼소거능 및 총 페놀함량에서는 조사 5% 첨가구에서 가장 높은 값을 나타내었으며, 비조사구보다 조사구에서 높은 항산화 활성이 나타났다. 초콜릿의 활성이 결과 냄새와 맛, 달콤함과 전반적인 기호도 측면에서 조사 1% 첨가구가 대조구보다 높은 점수를 얻은 것으로 보았을 때, 감마선 조사 열수추출 분말 1% 첨가의 비율로 미역귀 초콜릿을 제품개발 함으로써 대중화가 가능할 것으로 사료된다.

다국어 초록 (Multilingual Abstract)

The objectives of this study were to find the optimal mixing conditions and evaluate the antioxidant activity of chocolate with both non-irradiated and gamma-irradiated (50 kGy) hot water extracts from Undaria pinnatifida sporophylls (WEUS) at weight percentages of 0, 1, 3, and 5%. The moisture content of the WEUS chocolate was significantly higher than that of the control. On the other hand, the pH of chocolate had a tendency to decrease with the addition of WEUS, but there were no significant differences between non-irradiated and gamma-irradiated samples of the same concentrations. The lightness (L) value and yellowness (b) value decreased significantly with the addition of WEUS powder. However, the redness (a) value increased as the concentration increased. The hardness increased on the addition of WEUS powder, and gamma-irradiated chocolates were higher than non-irradiated chocolates. As the amount of WEUS powder increased, DPPH radical scavenging activity and total polyphenol content increased. The DPPH radical scavenging activity of gamma-irradiated groups was also higher than that of non-irradiated groups. The aroma, taste, sweetness, and overall acceptability of chocolate were significantly higher in the chocolate containing 1% WEUS powder. These results indicate that gamma-irradiated 1% WEUS chocolate was optimal.

목차 (Table of Contents)

• Abstract
• 서론
• 재료 및 방법
• 결과 및 고찰
• 요약
• 감사의 글
• 문헌

참고문헌 (Reference)

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